Working Memory- Sternberg Paradigm Working Memory: Definition Working memory is the short-term system that temporarily holds and manipulates information for quick mental tasks. Sternberg Task- Definition: ? In the Sternberg paradigm, the computer first shows participants a short list of items (the memory set). ? After a short delay, a single item (the probe) appears on screen. ? The participant presses one key if the probe was in the memory set (positive probe) and another key if it was not (negative probe). For tech team's reference: 1. Task Overview ? Main rounds: 15 sets of stimuli presented sequentially. ? Probe Rounds: 30-65 per memory set depending on span and population. Main Trials (Learning Rounds)-Definition: ? These are the "study" or "learning" rounds of the task. ? In each main trial, participants see a short list (set) of items one after another and are asked to remember them. ? Example: They might see A ? D ? F (for adolescents) or K7 ? C9 ? R2 (for adults). Probe Trials (Testing Rounds)- Definition: ? These are the "testing" rounds that come after each main round. ? Participants are shown single items (probes) one by one and must decide whether the item was in the memory set or not. ? For each probe: ? If it was in the memory set ? Positive probe (press "Yes") ? If it was not in the memory set ? Negative probe (press "No") Examples: ? Memory set = A, D, F ? Probe = D ? Positive ? Memory set = A, D, F ? Probe = G ? Negative 2. Main Rounds Stimuli ? Adolescents: Letters only (A-Z), memory set sizes = 1, 3, 5 letters, sequential & alternating presentation (1?3?5) ? Adults: Alphanumeric (e.g., K7, C9), memory set sizes = 2, 4, 6 digits, sequential & alternating presentation (2?4?6) 3. Probe Round Numbers by Span ? Adolescents: ? 1-letter ? 30 probe trials ? 3-letter ? 50 probe trials ? 5-letter ? 50 probe trials ? Adults: ? 2-alphanumeric digits ? 30 probe trials ? 4-alphanumeric digits ? 65 probe trials ? 6-alphanumeric digits ? 65 probe trials 4. Rounds Flow 1. The participant first reads the Main Task Instructions. Adolescents ( 14 to 18): "Welcome to the Memory Challenge Game! You will see a set of letters appear on the screen one by one. After a short pause, you will be shown a letter and need to decide whether it was part of the set you just saw. If you saw it before, press Yes; if not, press No.Take your time and try to respond as quickly as you can. Don't worry if it seems tricky at first - we'll start with a few practice rounds to get you ready." Adults ( 18 to 22): "Welcome to the Memory Challenge Game! You will see sequences of letter-number pairs ( for example: A1, C3) appear on the screen one by one. After a few seconds, you will be shown a series of letter-number pairs and need to decide if it was part of the sequence you just saw. if you saw it before, press Yes; if not, press No. This is just a practice round, so relax and get used to how the game works!" 2. Participants complete practice trials Practice Task Trial Flow - Adolescents (14-18 years) ? Memory Set Spans: 1-letter ? Presentation: Letters will be presented one by one. ? Trial Steps: 1. Fixation Cross: "+" for 0.3 s 2. Memory Set: Present a 1, letter stimuli for 1.1s 3. Retention Interval: Blank screen for 1 s 4. Probe Display: Centered letter with Yes/No buttons, remains visible until response or time-out each for 6 seconds. a) Participant Response: Chosen option highlighted in light blue b) No Response: Display "Time is up!" for 1 s 5. Fixation Cross: "+" for 0.3 s 6. Next : ¦ Repeat steps 4-5 for all probe trials of the current stimuli. Feedback Rules for practice task: (a) Correct Response (Probe matches memory set and participant presses correctly): ? Show message: "Correct! You remembered it right." ? Duration: 1 s (b) Incorrect Response (Pressed wrongly or missed correct probe): ? Show message: "That's okay-try to remember the set carefully." ? Duration: 1.5 s (c) No Response / Delay Alert: If no response within the allowed response window (2.5 s for adolescents, 2 s for adults): ? Play soft alert tone ? Show text: "Please press your choice quickly!" ? Duration: 1 s 4. General Feedback Between Practice Blocks After each practice block (e.g., 10-12 trials): ? If accuracy = 70%: Show: "Great work! You're getting the hang of it." ? If accuracy < 70%: Show: "Let's try again! Focus and respond a bit faster." Duration: 2 s before moving to the next block. Practice Task Flow Table - Adolescents Version (to be displayed in the interface in same order) Memory Set Trial No. Probe Type Options Time given for each stimulus K 1.1 seconds 1 K Positive Yes / No 6 s 2 A Negative Yes / No 6 s 3 M Negative Yes / No 6 s 4 K Positive Yes / No 6 s 5 R Negative Yes / No 6 s 6 K Positive Yes / No 6 s 7 L Negative Yes / No 6 s 8 B Negative Yes / No 6 s 9 K Positive Yes / No 6 s 10 K Positive Yes / No 6 s 11 T Negative Yes / No 6 s 12 C Negative Yes / No 6 s 13 K Positive Yes / No 6 s 14 K Positive Yes / No 6 s 15 K Positive Yes / No 6 s 16 D Negative Yes / No 6 s 17 K Positive Yes / No 6 s 18 S Negative Yes / No 6 s 19 K Positive Yes / No 6 s 20 F Negative Yes / No 6 s Practice Task Trial Flow - Adults (18-22 years) ? Memory Set Spans: 2-alphanumeric digits ? Presentation: Letters will be presented one by one. ? Trial Steps: 5. Fixation Cross: "+" for 0.3s 6. Memory Set: Present a 2, alphanumeric stimuli for 1.1 s 7. Retention Interval: Blank screen for 1 s 8. Probe Display: Centered letter with Yes/No buttons, remains visible until response or time-out, each for 4.5 seconds. c) Participant Response: Chosen option highlighted in light blue d) No Response: Display "Time is up!" for 1 s 5. Fixation Cross: "+" for 0.3 s 6. Next : ¦ Repeat steps 4-5 for all probe trials of the current stimuli. Practice Task Flow Table - Adults Version (to be displayed in the interface in same order) Memory Set Trial No. Probe Type Options Time displayed for each stimulus C9 B3 1.3 seconds each. 1 C9 Positive Yes / No 4.5 seconds 2 A1 Negative Yes / No 4.5 seconds 3 B3 Positive Yes / No 4.5 seconds 4 D4 Negative Yes / No 4.5 seconds 5 F2 Negative Yes / No 4.5 seconds 6 C9 Positive Yes / No 4.5 seconds 7 H8 Negative Yes / No 4.5 seconds 8 B3 Positive Yes / No 4.5 seconds 9 K7 Negative Yes / No 4.5 seconds 10 C9 Positive Yes / No 4.5 seconds 11 B3 Positive Yes / No 4.5 seconds 12 L1 Negative Yes / No 4.5 seconds 13 D4 Negative Yes / No 4.5 seconds 14 C9 Positive Yes / No 4.5 seconds 15 B3 Positive Yes / No 4.5 seconds 16 F2 Negative Yes / No 4.5 seconds 17 C9 Positive Yes / No 4.5 seconds 18 B3 Positive Yes / No 4.5 seconds 19 H8 Negative Yes / No 4.5 seconds 20 A1 Negative Yes / No 4.5 seconds 21 C9 Positive Yes / No 4.5 seconds 22 B3 Positive Yes / No 4.5 seconds 23 K7 Negative Yes / No 4.5 seconds 24 D4 Negative Yes / No 4.5 seconds 25 C9 Positive Yes / No 4.5 seconds 3. After practice, a one-line instruction appears, where participants are then directed to the main task. Adolescents (14-18 years) "Great job finishing the practice! Now get ready for the real task. Tap 'Let's Go!' below and the game begins!"" Adults (18-22 years) "Great job finishing the practice! Now get ready for the real task. Tap 'Let's Go!' below and the game begins!"" 4. Participants then proceed to the Main Task Main Task Round level Flow - Adolescents (14-18 years) ? Memory Set Spans: 1-letter, 3-letter, 5-letter ? Presentation: Letters will be presented one by one in an alternating digit span presentation (1?3?5) ? Trial Steps: 1. Fixation Cross: "+" for 0.3s 2. Memory Set: Present a 1, letter stimuli for 1.1s 3. Retention Interval: Blank screen for 1s 4. Probe Display: Centered letter with Yes/No buttons, remains visible until response or time-out each for 6 seconds. e) Participant Response: Chosen option highlighted in light blue f) No Response: Display "Time is up!" for 1 s 5. Fixation Cross: "+" for 0.3 s 6. Next : ¦ Repeat steps 4-5 for all probe trials of the current stimuli. ¦ After completing all probes of 1-letter span, move to 3- letter span, ? Trial Steps: 1. Fixation Cross: "+" for 0.3 s 2. Memory Set: Present a 3 letters stimuli for 1.1 s 3. Retention Interval: Blank screen for 1 s 4. Probe Display: Centered letter with Yes/No buttons, remains visible until response or time-out each for 6 seconds. a) Participant Response: Chosen option highlighted in light blue. b) No Response: Display "Time is up!" for 1s. 11 . Fixation Cross: "+" for 0.3 s 12. Next : a. Repeat steps 10-11 for all probe trials of the current stimuli. ¦ After completing all probes of 3-letter span, move to 5- letter span ? Trial Steps: 13. Fixation Cross: "+" for 0.3 s 14. Memory Set: Present a 5 letters stimuli for 1.1 s 15. Retention Interval: Blank screen for 1s 16. Probe Display: Centered letter with Yes/No buttons, remains visible until response or time-out each for 6 seconds. a) Participant Response: Chosen option highlighted in light blue. b) No Response: Display "Time is up!" for 1 s. 17 . Fixation Cross: "+" for 0.3 s ? 18) Next : Repeat steps 16-17 for all probe trials of the current stimuli ? After completing all probes of 5-letter span, we move alternating back to back presentations of 1- letter span ( 1-6 ), then 3letter - span ( 7-12) and 5- span (13-18) and so on until all the display of the main stimuli and its respective probe stimuli are completed. Main Task Flow Table Adolescents Version- 1st triad of stimuli (1,3,5) (to be displayed in the computer interface in the same order) ? Instructions for Adolescents: "Now it's time for the full game! You will see a set of letters appear on the screen one by one. After a short pause, you will see a series of letters and need to decide whether it was part of the set you just saw. Use the Yes or No buttons to make your choice. The number of letters may gradually increase, making the game more challenging. Stay sharp and have fun!" Trial No. Memory Set Probe Type Options Time Displayed Letter Span G 1.1 seconds 1 1 G Positive Yes / No 6 s 1 2 A Negative Yes / No 6 s 1 3 G Positive Yes / No 6 s 1 4 G Positive Yes / No 6 s 1 5 G Positive Yes / No 6 s 1 6 P Negative Yes / No 6 s 1 7 S Negative Yes / No 6 s 1 8 G Positive Yes / No 6 s 1 9 K Negative Yes / No 6 s 1 10 G Positive Yes / No 6 s 1 11 D Negative Yes / No 6 s 1 12 G Positive Yes / No 6 s 1 13 P Negative Yes / No 6 s 1 14 G Positive Yes / No 6 s 1 15 S Negative Yes / No 6 s 1 16 K Negative Yes / No 6 s 1 17 G Positive Yes / No 6 s 1 18 D Negative Yes / No 6 s 1 19 M Negative Yes / No 6 s 1 20 G Positive Yes / No 6 s 1 21 G Positive Yes / No 6 s 1 22 S Negative Yes / No 6 s 1 23 K Negative Yes / No 6 s 1 24 G Positive Yes / No 6 s 1 25 D Negative Yes / No 6 s 1 26 M Negative Yes / No 6 s 1 27 G Positive Yes / No 6 s 1 28 G Positive Yes / No 6 s 1 29 S Negative Yes / No 6 s 1 30 G Positive Yes / No 6 s 1 Trial No. Memory Set Probe Type Options Time Displayed during each Stimulus Letter Span A F R 1.1 seconds each 31 D Negative Yes/No 6 s 3 32 R Positive Yes / No 6 s 3 33 A Positive Yes / No 6 s 3 34 Z Negative Yes / No 6 s 3 35 K Negative Yes / No 6 s 3 36 M Negative Yes / No 6 s 3 37 G Negative Yes / No 6 s 3 38 F Positive Yes / No 6 s 3 39 R Positive Yes / No 6 s 3 40 A Positive Yes / No 6 s 3 41 L Negative Yes / No 6 s 3 42 P Negative Yes / No 6 s 3 43 F Positive Yes / No 6 s 3 44 R Positive Yes / No 6 s 3 45 B Negative Yes / No 6 s 3 46 A Positive Yes / No 6 s 3 47 K Negative Yes / No 6 s 3 48 M Negative Yes / No 6 s 3 49 F Positive Yes / No 6 s 3 50 J Negative Yes / No 6 s 3 51 D Negative Yes / No 6 s 3 52 A Positive Yes / No 6 s 3 53 R Positive Yes / No 6 s 3 54 P Negative Yes / No 6 s 3 55 F Positive Yes / No 6 s 3 56 K Negative Yes / No 6 s 3 57 S Negative Yes / No 6 s 3 58 B Negative Yes / No 6 s 3 59 F Positive Yes / No 6 s 3 60 M Negative Yes / No 6 s 3 61 A Positive Yes / No 6 s 3 62 L Negative Yes / No 6 s 3 63 D Negative Yes / No 6 s 3 64 F Positive Yes / No 6 s 3 65 K Negative Yes / No 6 s 3 66 A Positive Yes / No 6 s 3 67 R Positive Yes / No 6 s 3 68 M Negative Yes / No 6 s 3 69 F Positive Yes / No 6 s 3 70 R Positive Yes / No 6 s 3 71 D Negative Yes / No 6 s 3 72 B Negative Yes / No 6 s 3 73 A Positive Yes / No 6 s 3 74 F Positive Yes / No 6 s 3 75 K Negative Yes / No 6 s 3 76 R Positive Yes / No 6 s 3 77 P Negative Yes / No 6 s 3 78 A Positive Yes / No 6 s 3 79 R Positive Yes / No 6 s 3 80 F Positive Yes / No 6 s 3 Trial No. Memory Set Probe Type Options Time Displayed during each stimulus Letter Span B D H L Q 1.1 seconds each 81 H Positive Yes/No 6 s 5 82 F Negative Yes / No 6 s 5 83 R Negative Yes / No 6 s 5 84 L Positive Yes / No 6 s 5 85 A Negative Yes / No 6 s 5 86 D Positive Yes / No 6 s 5 87 R Negative Yes / No 6 s 5 88 H Positive Yes / No 6 s 5 89 T Negative Yes / No 6 s 5 90 T Negative Yes / No 6 s 5 91 K Negative Yes / No 6 s 5 92 L Positive Yes / No 6 s 5 93 D Positive Yes / No 6 s 5 94 M Negative Yes / No 6 s 5 95 Q Positive Yes / No 6 s 5 96 P Negative Yes / No 6 s 5 97 I Negative Yes / No 6 s 5 98 S Negative Yes / No 6 s 5 99 B Positive Yes / No 6 s 5 100 L Positive Yes / No 6 s 5 101 E Negative Yes / No 6 s 5 102 G Negative Yes / No 6 s 5 103 H Positive Yes / No 6 s 5 104 Q Positive Yes / No 6 s 5 105 C Negative Yes / No 6 s 5 106 B Positive Yes / No 6 s 5 107 T Negative Yes / No 6 s 5 108 L Positive Yes / No 6 s 5 109 H Positive Yes / No 6 s 5 110 P Negative Yes / No 6 s 5 111 D Positive Yes / No 6 s 5 112 F Negative Yes / No 6 s 5 113 Q Positive Yes / No 6 s 5 114 O Negative Yes / No 6 s 5 115 K Negative Yes / No 6 s 5 116 B Positive Yes / No 6 s 5 117 M Negative Yes / No 6 s 5 118 L Positive Yes / No 6 s 5 119 D Positive Yes / No 6 s 5 120 R Negative Yes / No 6 s 5 121 U Negative Yes / No 6 s 5 122 F Negative Yes / No 6 s 5 123 H Positive Yes / No 6 s 5 124 B Positive Yes / No 6 s 5 125 L Positive Yes / No 6 s 5 126 H Positive Yes / No 6 s 5 127 M Negative Yes / No 6 s 5 128 H Positive Yes / No 6 s 5 129 Q Positive Yes / No 6 s 5 130 C Negative Yes / No 6 s 5 Main Task Flow Table Adolescents Version- 2nd triad of stimuli (1,3,5) (to be displayed in the computer interface in the same order) Trial No. Memory Set Probe Type Options Time Displayed Letter Span E 1.1 seconds each 131 F Negative Yes / No 6 s 1 132 E Positive Yes / No 6 s 1 133 E Positive Yes / No 6 s 1 134 A Negative Yes / No 6 s 1 135 G Negative Yes / No 6 s 1 136 E Positive Yes / No 6 s 1 137 H Negative Yes / No 6 s 1 138 E Positive Yes / No 6 s 1 139 E Positive Yes / No 6 s 1 140 J Negative Yes / No 6 s 1 141 K Negative Yes / No 6 s 1 142 E Positive Yes / No 6 s 1 143 L Negative Yes / No 6 s 1 144 E Positive Yes / No 6 s 1 145 E Positive Yes / No 6 s 1 146 Q Negative Yes / No 6 s 1 147 N Negative Yes / No 6 s 1 148 O Negative Yes / No 6 s 1 149 E Positive Yes / No 6 s 1 150 P Negative Yes / No 6 s 1 151 E Positive Yes / No 6 s 1 152 Q Negative Yes / No 6 s 1 153 E Positive Yes / No 6 s 1 154 E Positive Yes / No 6 s 1 155 E Positive Yes / No 6 s 1 156 S Negative Yes / No 6 s 1 157 T Negative Yes / No 6 s 1 158 E Positive Yes / No 6 s 1 159 E Positive Yes / No 6 s 1 160 V Negative Yes / No 6 s 1 Trial No. Memory Set Probe Type Options Time Displayed Letter Span S J M 1.1 seconds each 161 S Positive Yes/No 6 s 3 162 A Negative Yes/No 6 s 3 163 N Negative Yes/No 6 s 3 164 K Negative Yes/No 6 s 3 165 M Positive Yes/No 6 s 3 166 B Negative Yes/No 6 s 3 167 C Negative Yes/No 6 s 3 168 S Positive Yes/No 6 s 3 169 J Positive Yes/No 6 s 3 170 D Negative Yes/No 6 s 3 171 R Negative Yes/No 6 s 3 172 E Negative Yes/No 6 s 3 173 F Negative Yes/No 6 s 3 174 S Positive Yes/No 6 s 3 175 M Positive Yes/No 6 s 3 176 H Negative Yes/No 6 s 3 177 J Positive Yes/No 6 s 3 178 M Positive Yes/No 6 s 3 179 I Negative Yes/No 6 s 3 180 S Positive Yes/No 6 s 3 181 J Positive Yes/No 6 s 3 182 K Negative Yes/No 6 s 3 183 M Positive Yes/No 6 s 3 184 L Negative Yes/No 6 s 3 185 P Negative Yes/No 6 s 3 186 M Positive Yes/No 6 s 3 187 J Positive Yes/No 6 s 3 188 S Positive Yes/No 6 s 3 189 Q Negative Yes/No 6 s 3 190 S Positive Yes/No 6 s 3 191 J Positive Yes/No 6 s 3 192 R Negative Yes/No 6 s 3 193 M Positive Yes/No 6 s 3 194 V Negative Yes/No 6 s 3 195 S Positive Yes/No 6 s 3 196 A Negative Yes/No 6 s 3 197 M Positive Yes/No 6 s 3 198 U Negative Yes/No 6 s 3 199 V Negative Yes/No 6 s 3 200 S Positive Yes/No 6 s 3 201 W Negative Yes/No 6 s 3 202 J Positive Yes/No 6 s 3 203 M Positive Yes/No 6 s 3 204 X Negative Yes/No 6 s 3 205 Y Negative Yes/No 6 s 3 206 S Positive Yes/No 6 s 3 207 Z Negative Yes/No 6 s 3 208 J Positive Yes/No 6 s 3 209 M Positive Yes/No 6 s 3 210 A Negative Yes/No 6 s 3 Trial No. Memory Set Probe (Positive/Negative) Option (Yes/No) Time Displayed Letter Span F N I R V 1.1 seconds each 211 I (Positive) Yes/No 6 s 5 212 P (Negative) Yes/No 6 s 5 213 R (Positive) Yes/No 6 s 5 214 V (Positive) Yes/No 6 s 5 215 F (Positive) Yes/No 6 s 5 216 T (Negative) Yes/No 6 s 5 217 C (Negative) Yes/No 6 s 5 218 L (Negative) Yes/No 6 s 5 219 N (Positive) Yes/No 6 s 5 220 H (Negative) Yes/No 6 s 5 221 V (Positive) Yes/No 6 s 5 222 I (Positive) Yes/No 6 s 5 223 R (Positive) Yes/No 6 s 5 224 G (Negative) Yes/No 6 s 5 225 Z (Negative) Yes/No 6 s 5 226 U (Negative) Yes/No 6 s 5 227 F (Positive) Yes/No 6 s 5 228 O (Negative) Yes/No 6 s 5 229 K (Negative) Yes/No 6 s 5 230 N (Positive) Yes/No 6 s 5 231 Y (Negative) Yes/No 6 s 5 232 S (Negative) Yes/No 6 s 5 233 V (Positive) Yes/No 6 s 5 234 J (Negative) Yes/No 6 s 5 235 R (Positive) Yes/No 6 s 5 236 X (Negative) Yes/No 6 s 5 237 I (Positive) Yes/No 6 s 5 238 N (Positive) Yes/No 6 s 5 239 T (Negative) Yes/No 6 s 5 240 B (Negative) Yes/No 6 s 5 241 A (Negative) Yes/No 6 s 5 242 Q (Negative) Yes/No 6 s 5 243 V (Positive) Yes/No 6 s 5 244 R (Positive) Yes/No 6 s 5 245 N (Positive) Yes/No 6 s 5 246 F (Positive) Yes/No 6 s 5 247 W (Negative) Yes/No 6 s 5 248 E (Negative) Yes/No 6 s 5 249 C (Negative) Yes/No 6 s 5 250 F (Positive) Yes/No 6 s 5 251 I (Positive) Yes/No 6 s 5 252 L (Negative) Yes/No 6 s 5 253 M (Negative) Yes/No 6 s 5 254 V (Positive) Yes/No 6 s 5 255 O (Negative) Yes/No 6 s 5 256 R (Positive) Yes/No 6 s 5 257 F (Positive) Yes/No 6 s 5 258 X (Negative) Yes/No 6 s 5 259 V (Positive) Yes/No 6 s 5 260 I (Positive) Yes/No 6 s 5 Main Task Flow Table Adolescents Version- 3rd triad of stimuli (1,3,5) (to be displayed in the same order) Trial No. Memory Set Probe (Positive/Negative) Option (Yes/No) Time Displayed Letter Span K 1.1 seconds 261 K (Positive) Yes/No 6 s 1 262 D (Negative) Yes/No 6 s 1 263 K (Positive) Yes/No 6 s 1 264 K (Positive) Yes/No 6 s 1 265 L (Negative) Yes/No 6 s 1 266 B (Negative) Yes/No 6 s 1 267 K (Positive) Yes/No 6 s 1 268 K (Positive) Yes/No 6 s 1 269 K (Positive) Yes/No 6 s 1 270 G (Negative) Yes/No 6 s 1 271 Z (Negative) Yes/No 6 s 1 272 T (Negative) Yes/No 6 s 1 273 K (Positive) Yes/No 6 s 1 274 K (Positive) Yes/No 6 s 1 275 K (Positive) Yes/No 6 s 1 276 M (Negative) Yes/No 6 s 1 277 F (Negative) Yes/No 6 s 1 278 K (Positive) Yes/No 6 s 1 279 J (Negative) Yes/No 6 s 1 280 Y (Negative) Yes/No 6 s 1 281 K (Positive) Yes/No 6 s 1 282 K (Positive) Yes/No 6 s 1 283 X (Negative) Yes/No 6 s 1 284 U (Negative) Yes/No 6 s 1 285 E (Negative) Yes/No 6 s 1 286 K (Positive) Yes/No 6 s 1 287 O (Negative) Yes/No 6 s 1 288 H (Negative) Yes/No 6 s 1 289 K (Positive) Yes/No 6 s 1 290 K (Positive) Yes/No 6 s 1 Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span I S V 1.1 seconds each 291 S (Positive) Yes/No 6 s 3 292 V (Positive) Yes/No 6 s 3 293 R (Negative) Yes/No 6 s 3 294 P (Negative) Yes/No 6 s 3 295 S (Positive) Yes/No 6 s 3 296 A (Negative) Yes/No 6 s 3 297 J (Negative) Yes/No 6 s 3 298 I (Positive) Yes/No 6 s 3 299 V (Positive) Yes/No 6 s 3 300 Q (Negative) Yes/No 6 s 3 301 G (Negative) Yes/No 6 s 3 302 H (Negative) Yes/No 6 s 3 303 S (Positive) Yes/No 6 s 3 304 V (Positive) Yes/No 6 s 3 305 I (Positive) Yes/No 6 s 3 306 N (Negative) Yes/No 6 s 3 307 S (Positive) Yes/No 6 s 3 308 R (Negative) Yes/No 6 s 3 309 B (Negative) Yes/No 6 s 3 310 V (Positive) Yes/No 6 s 3 311 W (Negative) Yes/No 6 s 3 312 Y (Negative) Yes/No 6 s 3 313 O (Negative) Yes/No 6 s 3 314 Z (Negative) Yes/No 6 s 3 315 I (Positive) Yes/No 6 s 3 316 V (Positive) Yes/No 6 s 3 317 C (Negative) Yes/No 6 s 3 318 V (Positive) Yes/No 6 s 3 319 S (Positive) Yes/No 6 s 3 320 D (Negative) Yes/No 6 s 3 321 V (Positive) Yes/No 6 s 3 322 I (Positive) Yes/No 6 s 3 323 Y (Negative) Yes/No 6 s 3 324 I (Positive) Yes/No 6 s 3 325 K (Negative) Yes/No 6 s 3 326 S (Positive) Yes/No 6 s 3 327 X (Negative) Yes/No 6 s 3 328 S (Positive) Yes/No 6 s 3 329 V (Positive) Yes/No 6 s 3 330 I (Positive) Yes/No 6 s 3 331 L (Negative) Yes/No 6 s 3 332 M (Negative) Yes/No 6 s 3 333 F (Negative) Yes/No 6 s 3 334 I (Positive) Yes/No 6 s 3 335 V (Positive) Yes/No 6 s 3 336 E (Negative) Yes/No 6 s 3 337 P (Negative) Yes/No 6 s 3 338 J (Negative) Yes/No 6 s 3 339 S (Positive) Yes/No 6 s 3 340 I (Positive) Yes/No 6 s 3 Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span B X E S O 1.1 seconds each 341 E (Positive) Yes/No 6 s 5 342 L (Negative) Yes/No 6 s 5 343 O (Positive) Yes/No 6 s 5 344 S ( Positive) Yes/No 6 s 5 345 X (Positive) Yes/No 6 s 5 346 H (Negative) Yes/No 6 s 5 347 S (Positive) Yes/No 6 s 5 348 B (Positive) Yes/No 6 s 5 349 Q (Negative) Yes/No 6 s 5 350 D (Negative) Yes/No 6 s 5 351 O (Positive) Yes/No 6 s 5 352 X (Positive) Yes/No 6 s 5 353 E (Positive) Yes/No 6 s 5 354 Z (Negative) Yes/No 6 s 5 355 S (Positive) Yes/No 6 s 5 356 A (Negative) Yes/No 6 s 5 357 K (Negative) Yes/No 6 s 5 358 O (Positive) Yes/No 6 s 5 359 T (Negative) Yes/No 6 s 5 360 B (Positive) Yes/No 6 s 5 361 U (Negative) Yes/No 6 s 5 362 W (Negative) Yes/No 6 s 5 363 X (Positive) Yes/No 6 s 5 364 C (Negative) Yes/No 6 s 5 365 E (Positive) Yes/No 6 s 5 366 V (Negative) Yes/No 6 s 5 367 G (Negative) Yes/No 6 s 5 368 S (Positive) Yes/No 6 s 5 369 X (Positive) Yes/No 6 s 5 370 O (Positive) Yes/No 6 s 5 371 Y (Negative) Yes/No 6 s 5 372 R (Negative) Yes/No 6 s 5 373 B (Positive) Yes/No 6 s 5 374 E (Positive) Yes/No 6 s 5 375 J (Negative) Yes/No 6 s 5 376 P (Negative) Yes/No 6 s 5 377 M (Negative) Yes/No 6 s 5 378 S (Positive) Yes/No 6 s 5 379 Q (Negative) Yes/No 6 s 5 380 F (Negative) Yes/No 6 s 5 381 X (Positive) Yes/No 6 s 5 382 E (Positive) Yes/No 6 s 5 383 Z (Negative) Yes/No 6 s 5 384 O (Positive) Yes/No 6 s 5 385 S (Positive) Yes/No 6 s 5 386 B (Positive) Yes/No 6 s 5 387 K (Negative) Yes/No 6 s 5 388 L (Negative) Yes/No 6 s 5 389 N (Negative) Yes/No 6 s 5 390 V (Negative) Yes/No 6 s 5 Main Task Flow Table Adolescents Version- 4th triad of stimuli (1,3,5) (to be displayed in the same order) Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span U 1.1 seconds 391 U (Positive) Yes/No 6 s 1 392 U (Positive) Yes/No 6 s 1 393 K (Negative) Yes/No 6 s 1 394 U (Positive) Yes/No 6 s 1 395 U (Positive) Yes/No 6 s 1 396 G (Negative) Yes/No 6 s 1 397 F (Negative) Yes/No 6 s 1 398 U (Positive) Yes/No 6 s 1 399 D (Negative) Yes/No 6 s 1 400 M (Negative) Yes/No 6 s 1 401 B (Negative) Yes/No 6 s 1 402 U (Positive) Yes/No 6 s 1 403 U (Positive) Yes/No 6 s 1 404 C (Negative) Yes/No 6 s 1 405 U (Positive) Yes/No 6 s 1 406 R (Negative) Yes/No 6 s 1 407 Y (Negative) Yes/No 6 s 1 408 U (Positive) Yes/No 6 s 1 409 U (Positive) Yes/No 6 s 1 410 H (Negative) Yes/No 6 s 1 411 U (Positive) Yes/No 6 s 1 412 L (Negative) Yes/No 6 s 1 413 U (Positive) Yes/No 6 s 1 414 S (Negative) Yes/No 6 s 1 415 U (Positive) Yes/No 6 s 1 416 U (Positive) Yes/No 6 s 1 417 Z (Negative) Yes/No 6 s 1 418 Q (Negative) Yes/No 6 s 1 419 U (Positive) Yes/No 6 s 1 420 N (Negative) Yes/No 6 s 1 Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span G Q T 1.1 seconds each 421 S (Negative) Yes/No 6 s 3 422 F (Negative) Yes/No 6 s 3 423 G (Positive) Yes/No 6 s 3 424 T (Positive) Yes/No 6 s 3 425 Q (Positive) Yes/No 6 s 3 426 H (Negative) Yes/No 6 s 3 427 M (Negative) Yes/No 6 s 3 428 T (Positive) Yes/No 6 s 3 429 G (Positive) Yes/No 6 s 3 430 D (Negative) Yes/No 6 s 3 431 Z (Negative) Yes/No 6 s 3 432 Q (Positive) Yes/No 6 s 3 433 C (Negative) Yes/No 6 s 3 434 G (Positive) Yes/No 6 s 3 435 Y (Negative) Yes/No 6 s 3 436 Q (Positive) Yes/No 6 s 3 437 T (Positive) Yes/No 6 s 3 438 Q (Positive) Yes/No 6 s 3 439 B (Negative) Yes/No 6 s 3 440 O (Negative) Yes/No 6 s 3 441 G (Positive) Yes/No 6 s 3 442 V (Negative) Yes/No 6 s 3 443 T (Positive) Yes/No 6 s 3 444 Q (Positive) Yes/No 6 s 3 445 I (Negative) Yes/No 6 s 3 446 E (Negative) Yes/No 6 s 3 447 G (Positive) Yes/No 6 s 3 448 L (Negative) Yes/No 6 s 3 449 G (Positive) Yes/No 6 s 3 450 T (Positive) Yes/No 6 s 3 451 K (Negative) Yes/No 6 s 3 452 S (Negative) Yes/No 6 s 3 453 Q (Positive) Yes/No 6 s 3 454 P (Negative) Yes/No 6 s 3 455 H (Negative) Yes/No 6 s 3 456 T (Positive) Yes/No 6 s 3 457 Q (Positive) Yes/No 6 s 3 458 J (Negative) Yes/No 6 s 3 459 U (Negative) Yes/No 6 s 3 460 G (Positive) Yes/No 6 s 3 461 Q (Positive) Yes/No 6 s 3 462 T (Positive) Yes/No 6 s 3 463 A (Negative) Yes/No 6 s 3 464 X (Negative) Yes/No 6 s 3 465 Z (Negative) Yes/No 6 s 3 466 T (Positive) Yes/No 6 s 3 467 G (Positive) Yes/No 6 s 3 468 Q (Positive) Yes/No 6 s 3 469 F (Negative) Yes/No 6 s 3 470 M (Negative) Yes/No 6 s 3 Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span C G M Q W 1.1 seconds each 471 M (Positive) Yes/No 6 s 5 472 Q (Positive) Yes/No 6 s 5 473 H (Negative) Yes/No 6 s 5 474 D (Negative) Yes/No 6 s 5 475 W (Positive) Yes/No 6 s 5 476 Z (Negative) Yes/No 6 s 5 477 G (Positive) Yes/No 6 s 5 478 C (Positive) Yes/No 6 s 5 479 L (Negative) Yes/No 6 s 5 480 Y (Negative) Yes/No 6 s 5 481 M (Positive) Yes/No 6 s 5 482 W (Positive) Yes/No 6 s 5 483 Q (Positive) Yes/No 6 s 5 484 K (Negative) Yes/No 6 s 5 485 X (Negative) Yes/No 6 s 5 486 P (Negative) Yes/No 6 s 5 487 G (Positive) Yes/No 6 s 5 488 B (Negative) Yes/No 6 s 5 489 O (Negative) Yes/No 6 s 5 490 C (Positive) Yes/No 6 s 5 491 R (Negative) Yes/No 6 s 5 492 G (Positive) Yes/No 6 s 5 493 Q (Positive) Yes/No 6 s 5 494 E (Negative) Yes/No 6 s 5 495 S (Negative) Yes/No 6 s 5 496 M (Positive) Yes/No 6 s 5 497 U (Negative) Yes/No 6 s 5 498 C (Positive) Yes/No 6 s 5 499 T (Negative) Yes/No 6 s 5 500 W (Positive) Yes/No 6 s 5 501 Q (Positive) Yes/No 6 s 5 502 N (Negative) Yes/No 6 s 5 503 F (Negative) Yes/No 6 s 5 504 G (Positive) Yes/No 6 s 5 505 I (Negative) Yes/No 6 s 5 506 W (Positive) Yes/No 6 s 5 507 J (Negative) Yes/No 6 s 5 508 C (Positive) Yes/No 6 s 5 509 M (Positive) Yes/No 6 s 5 510 V (Negative) Yes/No 6 s 5 511 W (Positive) Yes/No 6 s 5 512 Q (Positive) Yes/No 6 s 5 513 A (Negative) Yes/No 6 s 5 514 K (Negative) Yes/No 6 s 5 515 G (Positive) Yes/No 6 s 5 516 H (Negative) Yes/No 6 s 5 517 B (Negative) Yes/No 6 s 5 518 C (Positive) Yes/No 6 s 5 519 M (Positive) Yes/No 6 s 5 520 D (Negative) Yes/No 6 s 5 Main Task Flow Table Adolescents Version- 5th triad of stimuli (1,3,5) (to be displayed in the interface in the same order) Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span M 1.1 seconds 521 M (Positive) Yes/No 6 s 1 522 C (Negative) Yes/No 6 s 1 523 M (Positive) Yes/No 6 s 1 524 M (Positive) Yes/No 6 s 1 525 K (Negative) Yes/No 6 s 1 526 D (Negative) Yes/No 6 s 1 527 M (Positive) Yes/No 6 s 1 528 R (Negative) Yes/No 6 s 1 529 M (Positive) Yes/No 6 s 1 530 T (Negative Yes/No 6 s 1 531 U (Negative) Yes/No 6 s 1 532 O (Negative) Yes/No 6 s 1 533 M (Positive) Yes/No 6 s 1 534 M (Positive) Yes/No 6 s 1 535 M (Positive) Yes/No 6 s 1 536 N (Negative) Yes/No 6 s 1 537 P (Negative) Yes/No 6 s 1 538 M (Positive) Yes/No 6 s 1 539 M (Positive) Yes/No 6 s 1 540 G (Negative) Yes/No 6 s 1 541 Q (Negative) Yes/No 6 s 1 542 M (Positive) Yes/No 6 s 1 543 B (Negative) Yes/No 6 s 1 544 M (Positive) Yes/No 6 s 1 545 M (Positive) Yes/No 6 s 1 546 E (Negative) Yes/No 6 s 1 547 M (Positive) Yes/No 6 s 1 548 Y (Negative) Yes/No 6 s 1 549 Z (Negative) Yes/No 6 s 1 550 M (Positive) Yes/No 6 s 1 Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span B W L 1.1 seconds each 551 B (Positive) Yes/No 6 s 3 552 T (Negative) Yes/No 6 s 3 553 W (Positive) Yes/No 6 s 3 554 L (Positive) Yes/No 6 s 3 555 G (Negative) Yes/No 6 s 3 556 W (Positive) Yes/No 6 s 3 557 B (Positive) Yes/No 6 s 3 558 C (Negative) Yes/No 6 s 3 559 W (Positive) Yes/No 6 s 3 560 O (Negative) Yes/No 6 s 3 561 L (Positive) Yes/No 6 s 3 562 P (Negative) Yes/No 6 s 3 563 J (Negative) Yes/No 6 s 3 564 B (Positive) Yes/No 6 s 3 565 Q (Negative) Yes/No 6 s 3 566 L (Positive) Yes/No 6 s 3 567 W (Positive) Yes/No 6 s 3 568 B (Positive) Yes/No 6 s 3 569 L (Positive) Yes/No 6 s 3 570 K (Negative) Yes/No 6 s 3 571 Z (Negative) Yes/No 6 s 3 572 W (Positive) Yes/No 6 s 3 573 F (Negative) Yes/No 6 s 3 574 H (Negative) Yes/No 6 s 3 575 B (Positive) Yes/No 6 s 3 576 M (Negative) Yes/No 6 s 3 577 Y (Negative) Yes/No 6 s 3 578 L (Positive) Yes/No 6 s 3 579 D (Negative) Yes/No 6 s 3 580 B (Positive) Yes/No 6 s 3 581 N (Negative) Yes/No 6 s 3 582 W (Positive) Yes/No 6 s 3 583 S (Negative) Yes/No 6 s 3 584 U (Negative) Yes/No 6 s 3 585 L (Positive) Yes/No 6 s 3 586 R (Negative) Yes/No 6 s 3 587 W (Positive) Yes/No 6 s 3 588 B (Positive) Yes/No 6 s 3 589 L (Positive) Yes/No 6 s 3 590 C (Negative) Yes/No 6 s 3 591 G (Negative) Yes/No 6 s 3 592 Z (Negative) Yes/No 6 s 3 593 O (Negative) Yes/No 6 s 3 594 B (Positive) Yes/No 6 s 3 595 W (Positive) Yes/No 6 s 3 596 E (Negative) Yes/No 6 s 3 597 T (Negative) Yes/No 6 s 3 598 L (Positive) Yes/No 6 s 3 599 B (Positive) Yes/No 6 s 3 600 X (Negative) Yes/No 6 s 3 Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span H L P T Z 1.1 seconds each 601 Q (Negative) Yes/No 6 s 5 602 M (Negative) Yes/No 6 s 5 603 T (Positive) Yes/No 6 s 5 604 L (Positive) Yes/No 6 s 5 605 Z (Positive) Yes/No 6 s 5 606 J (Negative) Yes/No 6 s 5 607 B (Negative) Yes/No 6 s 5 608 P (Positive) Yes/No 6 s 5 609 H (Positive) Yes/No 6 s 5 610 L (Positive) Yes/No 6 s 5 611 K (Negative) Yes/No 6 s 5 612 Y (Negative) Yes/No 6 s 5 613 T (Positive) Yes/No 6 s 5 614 G (Negative) Yes/No 6 s 5 615 P (Positive) Yes/No 6 s 5 616 D (Negative) Yes/No 6 s 5 617 W (Negative) Yes/No 6 s 5 618 H (Positive) Yes/No 6 s 5 619 Z (Positive) Yes/No 6 s 5 620 F (Negative) Yes/No 6 s 5 621 C (Negative) Yes/No 6 s 5 622 L (Positive) Yes/No 6 s 5 623 X (Negative) Yes/No 6 s 5 624 T (Positive) Yes/No 6 s 5 625 H (Positive) Yes/No 6 s 5 626 P (Positive) Yes/No 6 s 5 627 V (Negative) Yes/No 6 s 5 628 Z (Positive) Yes/No 6 s 5 629 A (Negative) Yes/No 6 s 5 630 B (Negative) Yes/No 6 s 5 631 M (Negative) Yes/No 6 s 5 632 L (Positive) Yes/No 6 s 5 633 O (Negative) Yes/No 6 s 5 634 P (Positive) Yes/No 6 s 5 635 Z (Positive) Yes/No 6 s 5 636 E (Negative) Yes/No 6 s 5 637 R (Negative) Yes/No 6 s 5 638 W (Negative) Yes/No 6 s 5 639 H (Positive) Yes/No 6 s 5 640 L (Positive) Yes/No 6 s 5 641 J (Negative) Yes/No 6 s 5 642 S (Negative) Yes/No 6 s 5 643 T (Positive) Yes/No 6 s 5 644 Q (Negative) Yes/No 6 s 5 645 P (Positive) Yes/No 6 s 5 646 Z (Positive) Yes/No 6 s 5 647 L (Positive) Yes/No 6 s 5 648 U (Negative) Yes/No 6 s 5 649 N (Negative) Yes/No 6 s 5 650 H (Positive) Yes/No 6 s 5 Main Task Trial Flow - Adults (18-22 years) ? Memory Set Spans: 2- alphanumeric digit, 4- alphanumeric digit, 6- alphanumeric digit ? Presentation: Letters will be presented one by one in an alternating digit span presentation (2?4?6) ? Trial Steps: 1. Fixation Cross: "+" for 0.3s 2. Memory Set: Present a 2 alphanumeric digits for 1.3s 3. Retention Interval: Blank screen for 1 s 4. Probe Display: Centered alphanumeric character with Yes/No buttons, remains visible until response or time- out each for 4.5 seconds a) Participant Response: Chosen option highlighted in light blue b) No Response: Display "Time is up!" for 1 s. 5. Fixation Cross: "+" for 0.3s 6. Next : ¦ Repeat steps 4-5 for all probe trials of the current span ¦ After completing all probes of 2-digit span, move to 4- digit span ? Trial Steps: 7. Fixation Cross: "+" for 0.3s 8. Memory Set: Present a 4 alphanumeric digits stimuli for 1.3s 9. Retention Interval: Blank screen for 1s 10. Probe Display: Centered alphanumeric character with Yes/No buttons, remains visible until response or time-out each for 4.5 seconds a) Participant Response: Chosen option highlighted in light blue b) No Response: Display "Time is up!" for 1s. 11) Fixation Cross: "+" for 0.3s 12) Next : ¦ Repeat steps 10- 11 for all the respective probe trials of the current stimuli ¦ After completing all probes of 4-digit span, move to 6- digit span ? Trial Steps: 13) Fixation Cross: "+" for 0.3s 14) Memory Set: Present a 6 alphanumeric digits for 1.3s 15) Retention Interval: Blank screen for 1s 16) Probe Display: Centered alphanumeric character with Yes/No buttons, remains visible until response or time-out each for 4.5 seconds a) Participant Response: Chosen option highlighted in light blue b) No Response: Display "Time is up!" for 1s. 17) Fixation Cross: "+" for 0.3s 18) Next : ¦ Repeat steps 16-17 for all probe trials of the current stimuli. ¦ After completing all probes of 5-letter span, we move alternating back to back presentation of 1- letter span ( 1- 6 ), then 3letter - span ( 7-12) and 5- span (13-18) and so on until all the display of the main stimuli and its respective probe stimuli are completed. Main Task Flow Table Adults Version- 1st triad of stimuli (2,4,6) (to be displayed in the same order) Instructions for Adults: "Now it's time for the full game! You will see a set of letter-number pairs appear on the screen one by one. After a short pause, you will see a series of letter-number pairs and need to decide whether it was part of the set you just saw. Use the Yes or No buttons to make your choice. The number of letters may gradually increase, making the game more challenging. Stay sharp and have fun!" Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span B1 D3 1.3 seconds each 01 B1 (Positive) Yes/No 4.5 seconds 2 02 D3 (Positive) Yes/No 4.5 seconds 2 03 D3 (Positive) Yes/No 4.5 seconds 2 04 K9 (Negative) Yes/No 4.5 seconds 2 05 Q5 (Negative) Yes/No 4.5 seconds 2 06 B1 (Positive) Yes/No 4.5 seconds 2 07 L2 (Negative) Yes/No 4.5 seconds 2 08 D3 (Positive) Yes/No 4.5 seconds 2 09 B1 (Positive) Yes/No 4.5 seconds 2 10 H8 (Negative) Yes/No 4.5 seconds 2 11 M4 (Negative) Yes/No 4.5 seconds 2 12 D3 (Positive) Yes/No 4.5 seconds 2 13 Z6 (Negative) Yes/No 4.5 seconds 2 14 R7 (Negative) Yes/No 4.5 seconds 2 15 B1 (Positive) Yes/No 4.5 seconds 2 16 V2 (Negative) Yes/No 4.5 seconds 2 17 B1 (Positive) Yes/No 4.5 seconds 2 18 D3 (Positive) Yes/No 4.5 seconds 2 19 X9 (Negative) Yes/No 4.5 seconds 2 20 Y1 (Negative) Yes/No 4.5 seconds 2 21 D3 (Positive) Yes/No 4.5 seconds 2 22 G5 (Negative) Yes/No 4.5 seconds 2 23 B1 (Positive) Yes/No 4.5 seconds 2 24 C8 (Negative) Yes/No 4.5 seconds 2 25 D3 (Positive) Yes/No 4.5 seconds 2 26 W7 (Negative) Yes/No 4.5 seconds 2 27 U4 (Negative) Yes/No 4.5 seconds 2 28 B1 (Positive) Yes/No 4.5 seconds 2 29 D3 (Positive) Yes/No 4.5 seconds 2 30 S6 (Negative) Yes/No 4.5 seconds 2 Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span H6 J4 M2 R8 1.3 seconds each 31 M2 (Positive) Yes/No 4.5 seconds 4 32 P5 (Negative) Yes/No 4.5 seconds 4 33 J4 (Positive) Yes/No 4.5 seconds 4 34 R8 (Positive) Yes/No 4.5 seconds 4 35 G1 (Negative) Yes/No 4.5 seconds 4 36 H6 (Positive) Yes/No 4.5 seconds 4 37 Z9 (Negative) Yes/No 4.5 seconds 4 38 N7 (Negative) Yes/No 4.5 seconds 4 39 M2 (Positive) Yes/No 4.5 seconds 4 40 J4 (Positive) Yes/No 4.5 seconds 4 41 X3 (Negative) Yes/No 4.5 seconds 4 42 L5 (Negative) Yes/No 4.5 seconds 4 43 H6 (Positive) Yes/No 4.5 seconds 4 44 C2 (Negative) Yes/No 4.5 seconds 4 45 R8 (Positive) Yes/No 4.5 seconds 4 46 J4 (Positive) Yes/No 4.5 seconds 4 47 H6 (Positive) Yes/No 4.5 seconds 4 48 E1 (Negative) Yes/No 4.5 seconds 4 49 F4 (Negative) Yes/No 4.5 seconds 4 50 M2 (Positive) Yes/No 4.5 seconds 4 51 Q3 (Negative) Yes/No 4.5 seconds 4 52 W2 (Negative) Yes/No 4.5 seconds 4 53 R8 (Positive) Yes/No 4.5 seconds 4 54 H6 (Positive) Yes/No 4.5 seconds 4 55 J4 (Positive) Yes/No 4.5 seconds 4 56 D5 (Negative) Yes/No 4.5 seconds 4 57 T1 (Negative) Yes/No 4.5 seconds 4 58 Z8 (Negative) Yes/No 4.5 seconds 4 59 M2 (Positive) Yes/No 4.5 seconds 4 60 R8 (Positive) Yes/No 4.5 seconds 4 61 J4 (Positive) Yes/No 4.5 seconds 4 62 L7 (Negative) Yes/No 4.5 seconds 4 63 O9 (Negative) Yes/No 4.5 seconds 4 64 H6 (Positive) Yes/No 4.5 seconds 4 65 P3 (Negative) Yes/No 4.5 seconds 4 66 A4 (Negative) Yes/No 4.5 seconds 4 67 B6 (Negative) Yes/No 4.5 seconds 4 68 R8 (Positive) Yes/No 4.5 seconds 4 69 H6 (Positive) Yes/No 4.5 seconds 4 70 C1 (Negative) Yes/No 4.5 seconds 4 71 J4 (Positive) Yes/No 4.5 seconds 4 72 P2 (Negative) Yes/No 4.5 seconds 4 73 Z3 (Negative) Yes/No 4.5 seconds 4 74 M2 (Positive) Yes/No 4.5 seconds 4 75 J4 (Positive) Yes/No 4.5 seconds 4 76 R8 (Positive) Yes/No 4.5 seconds 4 77 V7 (Negative) Yes/No 4.5 seconds 4 78 K5 (Negative) Yes/No 4.5 seconds 4 79 H6 (Positive) Yes/No 4.5 seconds 4 80 M2 (Positive) Yes/No 4.5 seconds 4 81 Y9 (Negative) Yes/No 4.5 seconds 4 82 D6 (Negative) Yes/No 4.5 seconds 4 83 R8 (Positive) Yes/No 4.5 seconds 4 84 J4 (Positive) Yes/No 4.5 seconds 4 85 H6 (Positive) Yes/No 4.5 seconds 4 86 X8 (Negative) Yes/No 4.5 seconds 4 87 F3 (Negative) Yes/No 4.5 seconds 4 88 L4 (Negative) Yes/No 4.5 seconds 4 89 Z9 (Negative) Yes/No 4.5 seconds 4 90 M2 (Positive) Yes/No 4.5 seconds 4 91 R8 (Positive) Yes/No 4.5 seconds 4 92 J4 (Positive) Yes/No 4.5 seconds 4 93 P7 (Negative) Yes/No 4.5 seconds 4 94 T3 (Negative) Yes/No 4.5 seconds 4 95 H6 (Positive) Yes/No 4.5 seconds 4 Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span F5 K9 L7 P3 T2 U6 1.3 seconds each 96 V2 (Negative) Yes/No 4.5 seconds 6 97 G1 (Negative) Yes/No 4.5 seconds 6 98 P3 (Positive) Yes/No 4.5 seconds 6 99 Z4 (Negative) Yes/No 4.5 seconds 6 100 U6 (Positive) Yes/No 4.5 seconds 6 101 R9 (Negative) Yes/No 4.5 seconds 6 102 K9 (Positive) Yes/No 4.5 seconds 6 103 T2 (Positive) Yes/No 4.5 seconds 6 104 F5 (Positive) Yes/No 4.5 seconds 6 105 Q7 (Negative) Yes/No 4.5 seconds 6 106 C3 (Negative) Yes/No 4.5 seconds 6 107 L7 (Positive) Yes/No 4.5 seconds 6 108 V2 (Negative) Yes/No 4.5 seconds 6 109 U6 (Positive) Yes/No 4.5 seconds 6 110 K9 (Positive) Yes/No 4.5 seconds 6 111 P3 (Positive) Yes/No 4.5 seconds 6 112 D8 (Negative) Yes/No 4.5 seconds 6 113 J5 (Negative) Yes/No 4.5 seconds 6 114 H4 (Negative) Yes/No 4.5 seconds 6 115 T2 (Positive) Yes/No 4.5 seconds 6 116 L7 (Positive) Yes/No 4.5 seconds 6 117 M1 (Negative) Yes/No 4.5 seconds 6 118 F5 (Positive) Yes/No 4.5 seconds 6 119 Z9 (Negative) Yes/No 4.5 seconds 6 120 Q6 (Negative) Yes/No 4.5 seconds 6 121 P3 (Positive) Yes/No 4.5 seconds 6 122 K9 (Positive) Yes/No 4.5 seconds 6 123 U6 (Positive) Yes/No 4.5 seconds 6 124 R7 (Negative) Yes/No 4.5 seconds 6 125 G2 (Negative) Yes/No 4.5 seconds 6 126 W1 (Negative) Yes/No 4.5 seconds 6 127 L7 (Positive) Yes/No 4.5 seconds 6 128 C8 (Negative) Yes/No 4.5 seconds 6 129 T2 (Positive) Yes/No 4.5 seconds 6 130 P3 (Positive) Yes/No 4.5 seconds 6 131 S4 (Negative) Yes/No 4.5 seconds 6 132 H9 (Negative) Yes/No 4.5 seconds 6 133 U6 (Positive) Yes/No 4.5 seconds 6 134 F5 (Positive) Yes/No 4.5 seconds 6 135 J4 (Negative) Yes/No 4.5 seconds 6 136 L7 (Positive) Yes/No 4.5 seconds 6 137 K9 (Positive) Yes/No 4.5 seconds 6 138 W8 (Negative) Yes/No 4.5 seconds 6 139 U6 (Positive) Yes/No 4.5 seconds 6 140 R8 (Negative) Yes/No 4.5 seconds 6 141 T2 (Positive) Yes/No 4.5 seconds 6 142 M7 (Negative) Yes/No 4.5 seconds 6 143 L7 (Positive) Yes/No 4.5 seconds 6 144 H5 (Negative) Yes/No 4.5 seconds 6 145 L7 (Positive) Yes/No 4.5 seconds 6 146 U6 (Positive) Yes/No 4.5 seconds 6 147 A3 (Negative) Yes/No 4.5 seconds 6 148 T2 (Positive) Yes/No 4.5 seconds 6 149 P3 (Positive) Yes/No 4.5 seconds 6 150 N9 (Negative) Yes/No 4.5 seconds 6 151 G8 (Negative) Yes/No 4.5 seconds 6 152 X5 (Negative) Yes/No 4.5 seconds 6 153 K9 (Positive) Yes/No 4.5 seconds 6 154 J2 (Negative) Yes/No 4.5 seconds 6 155 C1 (Negative) Yes/No 4.5 seconds 6 156 R6 (Negative) Yes/No 4.5 seconds 6 157 U6 (Positive) Yes/No 4.5 seconds 6 158 F5 (Positive) Yes/No 4.5 seconds 6 159 K8 (Negative) Yes/No 4.5 seconds 6 160 P3 (Positive) Yes/No 4.5 seconds 6 Main Task Flow Table Adults Version- 2nd triad of stimuli (2,4,6) (to be displayed in the computer interface in the same order) Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span C2 F4 1.3 seconds each 161 C2 (Positive) Yes/No 4.5 seconds 2 162 K7 (Negative) Yes/No 4.5 seconds 2 163 F4 (Positive) Yes/No 4.5 seconds 2 164 P8 (Negative) Yes/No 4.5 seconds 2 165 J1 (Negative) Yes/No 4.5 seconds 2 166 C2 (Positive) Yes/No 4.5 seconds 2 167 F4 (Positive) Yes/No 4.5 seconds 2 168 C2 (Positive) Yes/No 4.5 seconds 2 169 M6 (Negative) Yes/No 4.5 seconds 2 170 G9 (Negative) Yes/No 4.5 seconds 2 171 F4 (Positive) Yes/No 4.5 seconds 2 172 C2 (Positive) Yes/No 4.5 seconds 2 173 F4 (Positive) Yes/No 4.5 seconds 2 174 Q3 (Negative) Yes/No 4.5 seconds 2 175 V5 (Negative) Yes/No 4.5 seconds 2 176 L8 (Negative) Yes/No 4.5 seconds 2 177 F4 (Positive) Yes/No 4.5 seconds 2 178 R2 (Negative) Yes/No 4.5 seconds 2 179 H7 (Negative) Yes/No 4.5 seconds 2 180 C2 (Positive) Yes/No 4.5 seconds 2 181 F4 (Positive) Yes/No 4.5 seconds 2 182 Z9 (Negative) Yes/No 4.5 seconds 2 183 T6 (Negative) Yes/No 4.5 seconds 2 184 C2 (Positive) Yes/No 4.5 seconds 2 185 P5 (Negative) Yes/No 4.5 seconds 2 186 W1 (Negative) Yes/No 4.5 seconds 2 187 F4 (Positive) Yes/No 4.5 seconds 2 188 C2 (Positive) Yes/No 4.5 seconds 2 189 F4 (Positive) Yes/No 4.5 seconds 2 190 D7 (Negative) Yes/No 4.5 seconds 2 Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span L8 Q1 G5 S3 1.3 seconds each 191 A3 (Negative) Yes/No 4.5 seconds 4 192 Z6 (Negative) Yes/No 4.5 seconds 4 193 L8 (Positive) Yes/No 4.5 seconds 4 194 D9 (Negative) Yes/No 4.5 seconds 4 195 Q1 (Positive) Yes/No 4.5 seconds 4 196 N2 (Negative) Yes/No 4.5 seconds 4 197 S3 (Positive) Yes/No 4.5 seconds 4 198 J5 (Negative) Yes/No 4.5 seconds 4 199 Q1 (Positive) Yes/No 4.5 seconds 4 200 G5 (Positive) Yes/No 4.5 seconds 4 201 R4 (Negative) Yes/No 4.5 seconds 4 202 H7 (Negative) Yes/No 4.5 seconds 4 203 L8 (Positive) Yes/No 4.5 seconds 4 204 Y9 (Negative) Yes/No 4.5 seconds 4 205 S3 (Positive) Yes/No 4.5 seconds 4 206 Q1 (Positive) Yes/No 4.5 seconds 4 207 G5 (Positive) Yes/No 4.5 seconds 4 208 V8 (Negative) Yes/No 4.5 seconds 4 209 T2 (Negative) Yes/No 4.5 seconds 4 210 L8 (Positive) Yes/No 4.5 seconds 4 211 M6 (Negative) Yes/No 4.5 seconds 4 212 Q1 (Positive) Yes/No 4.5 seconds 4 213 Z4 (Negative) Yes/No 4.5 seconds 4 214 G5 (Positive) Yes/No 4.5 seconds 4 215 C7 (Negative) Yes/No 4.5 seconds 4 216 Z1 (Negative) Yes/No 4.5 seconds 4 217 Q1 (Positive) Yes/No 4.5 seconds 4 218 P4 (Negative) Yes/No 4.5 seconds 4 219 L8 (Positive) Yes/No 4.5 seconds 4 220 G5 (Positive) Yes/No 4.5 seconds 4 221 Q1 (Positive) Yes/No 4.5 seconds 4 222 B2 (Negative) Yes/No 4.5 seconds 4 223 S3 (Positive) Yes/No 4.5 seconds 4 224 W6 (Negative) Yes/No 4.5 seconds 4 225 R9 (Negative) Yes/No 4.5 seconds 4 226 Q1 (Positive) Yes/No 4.5 seconds 4 227 L8 (Positive) Yes/No 4.5 seconds 4 228 J8 (Negative) Yes/No 4.5 seconds 4 229 G5 (Positive) Yes/No 4.5 seconds 4 230 S3 (Positive) Yes/No 4.5 seconds 4 231 K3 (Negative) Yes/No 4.5 seconds 4 232 Y7 (Negative) Yes/No 4.5 seconds 4 233 Q1 (Positive) Yes/No 4.5 seconds 4 234 G5 (Positive) Yes/No 4.5 seconds 4 235 X5 (Negative) Yes/No 4.5 seconds 4 236 L8 (Positive) Yes/No 4.5 seconds 4 237 H2 (Negative) Yes/No 4.5 seconds 4 238 U5 (Negative) Yes/No 4.5 seconds 4 239 Z4 (Negative) Yes/No 4.5 seconds 4 240 G5 (Positive) Yes/No 4.5 seconds 4 241 Q1 (Positive) Yes/No 4.5 seconds 4 242 L8 (Positive) Yes/No 4.5 seconds 4 243 V9 (Negative) Yes/No 4.5 seconds 4 244 D1 (Negative) Yes/No 4.5 seconds 4 245 S3 (Positive) Yes/No 4.5 seconds 4 246 G5 (Positive) Yes/No 4.5 seconds 4 247 L8 (Positive) Yes/No 4.5 seconds 4 248 T6 (Negative) Yes/No 4.5 seconds 4 249 Q1 (Positive) Yes/No 4.5 seconds 4 250 J9 (Negative) Yes/No 4.5 seconds 4 251 Z5 (Negative) Yes/No 4.5 seconds 4 252 S3 (Positive) Yes/No 4.5 seconds 4 253 F8 (Negative) Yes/No 4.5 seconds 4 254 G5 (Positive) Yes/No 4.5 seconds 4 255 V3 (Negative) Yes/No 4.5 seconds 4 Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span A7 D9 R6 U2 K3 V4 1.3 seconds each 256 R6 (Positive) Yes/No 4.5 seconds 6 257 H8 (Negative) Yes/No 4.5 seconds 6 258 V4 (Positive) Yes/No 4.5 seconds 6 259 V2 (Negative) Yes/No 4.5 seconds 6 260 T5 (Negative) Yes/No 4.5 seconds 6 261 U2 (Positive) Yes/No 4.5 seconds 6 262 A7 (Positive) Yes/No 4.5 seconds 6 263 K9 (Negative) Yes/No 4.5 seconds 6 264 M3 (Negative) Yes/No 4.5 seconds 6 265 K3 (Positive) Yes/No 4.5 seconds 6 266 R6 (Positive) Yes/No 4.5 seconds 6 267 Y1 (Negative) Yes/No 4.5 seconds 6 268 U2 (Positive) Yes/No 4.5 seconds 6 269 Z3 (Negative) Yes/No 4.5 seconds 6 270 J7 (Negative) Yes/No 4.5 seconds 6 271 A7 (Positive) Yes/No 4.5 seconds 6 272 S8 (Negative) Yes/No 4.5 seconds 6 273 D9 (Positive) Yes/No 4.5 seconds 6 274 G2 (Negative) Yes/No 4.5 seconds 6 275 U2 (Positive) Yes/No 4.5 seconds 6 276 V4 (Positive) Yes/No 4.5 seconds 6 277 K3 (Positive) Yes/No 4.5 seconds 6 278 Z6 (Negative) Yes/No 4.5 seconds 6 279 R6 (Positive) Yes/No 4.5 seconds 6 280 B1 (Negative) Yes/No 4.5 seconds 6 281 D9 (Positive) Yes/No 4.5 seconds 6 282 C5 (Negative) Yes/No 4.5 seconds 6 283 F4 (Negative) Yes/No 4.5 seconds 6 284 H1 (Negative) Yes/No 4.5 seconds 6 285 V4 (Positive) Yes/No 4.5 seconds 6 286 U2 (Positive) Yes/No 4.5 seconds 6 287 K3 (Positive) Yes/No 4.5 seconds 6 288 X9 (Negative) Yes/No 4.5 seconds 6 289 L4 (Negative) Yes/No 4.5 seconds 6 290 R6 (Positive) Yes/No 4.5 seconds 6 291 J3 (Negative) Yes/No 4.5 seconds 6 292 A7 (Positive) Yes/No 4.5 seconds 6 293 D9 (Positive) Yes/No 4.5 seconds 6 294 W5 (Negative) Yes/No 4.5 seconds 6 295 T1 (Negative) Yes/No 4.5 seconds 6 296 K3 (Positive) Yes/No 4.5 seconds 6 297 H7 (Negative) Yes/No 4.5 seconds 6 298 U2 (Positive) Yes/No 4.5 seconds 6 299 R6 (Positive) Yes/No 4.5 seconds 6 300 V4 (Positive) Yes/No 4.5 seconds 6 301 Q2 (Negative) Yes/No 4.5 seconds 6 302 G8 (Negative) Yes/No 4.5 seconds 6 303 A7 (Positive) Yes/No 4.5 seconds 6 304 F9 (Negative) Yes/No 4.5 seconds 6 305 D9 (Positive) Yes/No 4.5 seconds 6 306 K3 (Positive) Yes/No 4.5 seconds 6 307 S3 (Negative) Yes/No 4.5 seconds 6 308 Y6 (Negative) Yes/No 4.5 seconds 6 309 B1 (Negative) Yes/No 4.5 seconds 6 310 V4 (Positive) Yes/No 4.5 seconds 6 311 D9 (Positive) Yes/No 4.5 seconds 6 312 A7 (Positive) Yes/No 4.5 seconds 6 313 H2 (Negative) Yes/No 4.5 seconds 6 314 S5 (Negative) Yes/No 4.5 seconds 6 315 U2 (Positive) Yes/No 4.5 seconds 6 316 K3 (Positive) Yes/No 4.5 seconds 6 317 Z7 (Negative) Yes/No 4.5 seconds 6 318 B2 (Negative) Yes/No 4.5 seconds 6 319 V4 (Positive) Yes/No 4.5 seconds 6 320 J8 (Negative) Yes/No 4.5 seconds 6 Main Task Flow Table Adults Version- 3rd triad of stimuli (2,4,6) (to be displayed in the interface in the same order) Trial No. Memory Set Probe (Positive/Negative ) Option (Yes/No) Time Displayed Letter Span G1 E7 1.3 seconds each 321 G1 (Positive) Yes/No 4.5 seconds 2 322 M4 (Negative) Yes/No 4.5 seconds 2 323 S2 (Negative) Yes/No 4.5 seconds 2 324 Q5 (Negative) Yes/No 4.5 seconds 2 325 G1 (Positive) Yes/No 4.5 seconds 2 326 Z9 (Negative) Yes/No 4.5 seconds 2 327 E7 (Positive) Yes/No 4.5 seconds 2 328 G1 (Positive) Yes/No 4.5 seconds 2 329 E7 (Positive) Yes/No 4.5 seconds 2 330 H6 (Negative) Yes/No 4.5 seconds 2 331 J3 (Negative) Yes/No 4.5 seconds 2 332 G1 (Positive) Yes/No 4.5 seconds 2 333 E7 (Positive) Yes/No 4.5 seconds 2 334 L8 (Negative) Yes/No 4.5 seconds 2 335 P2 (Negative) Yes/No 4.5 seconds 2 336 G1 (Positive) Yes/No 4.5 seconds 2 337 M7 (Negative) Yes/No 4.5 seconds 2 338 T4 (Negative) Yes/No 4.5 seconds 2 339 E7 (Positive) Yes/No 4.5 seconds 2 340 G1 (Positive) Yes/No 4.5 seconds 2 341 E7 (Positive) Yes/No 4.5 seconds 2 342 K9 (Negative) Yes/No 4.5 seconds 2 343 F5 (Negative) Yes/No 4.5 seconds 2 344 C6 (Negative) Yes/No 4.5 seconds 2 345 E7 (Positive) Yes/No 4.5 seconds 2 346 G1 (Positive) Yes/No 4.5 seconds 2 347 X8 (Negative) Yes/No 4.5 seconds 2 348 B4 (Negative) Yes/No 4.5 seconds 2 349 E7 (Positive) Yes/No 4.5 seconds 2 350 G1 (Positive) Yes/No 4.5 seconds 2 Trial No. Memory Set Probe Type Options Time Displayed Letter Span N6 T4 P7 H9 1.3 seconds each 351 N6 Positive Yes / No 4.5 seconds 4 352 T4 Positive Yes / No 4.5 seconds 4 353 P7 Positive Yes / No 4.5 seconds 4 354 A1 Negative Yes / No 4.5 seconds 4 355 T4 Positive Yes / No 4.5 seconds 4 356 C3 Negative Yes / No 4.5 seconds 4 357 H9 Positive Yes / No 4.5 seconds 4 358 D4 Negative Yes / No 4.5 seconds 4 359 E5 Negative Yes / No 4.5 seconds 4 360 N6 Positive Yes / No 4.5 seconds 4 361 F6 Negative Yes / No 4.5 seconds 4 362 G7 Negative Yes / No 4.5 seconds 4 363 T4 Positive Yes / No 4.5 seconds 4 364 P7 Positive Yes / No 4.5 seconds 4 365 H9 Positive Yes / No 4.5 seconds 4 366 I1 Negative Yes / No 4.5 seconds 4 367 N6 Positive Yes / No 4.5 seconds 4 368 K3 Negative Yes / No 4.5 seconds 4 369 N6 Positive Yes / No 4.5 seconds 4 370 L4 Negative Yes / No 4.5 seconds 4 371 T4 Positive Yes / No 4.5 seconds 4 372 M5 Negative Yes / No 4.5 seconds 4 373 P7 Positive Yes / No 4.5 seconds 4 374 H9 Positive Yes / No 4.5 seconds 4 375 N6 Positive Yes / No 4.5 seconds 4 376 N1 Negative Yes / No 4.5 seconds 4 377 O2 Negative Yes / No 4.5 seconds 4 378 P7 Positive Yes / No 4.5 seconds 4 379 Q3 Negative Yes / No 4.5 seconds 4 380 R4 Negative Yes / No 4.5 seconds 4 381 H9 Positive Yes / No 4.5 seconds 4 382 S5 Negative Yes / No 4.5 seconds 4 383 T4 Positive Yes / No 4.5 seconds 4 384 U6 Negative Yes / No 4.5 seconds 4 385 V7 Negative Yes / No 4.5 seconds 4 386 N6 Positive Yes / No 4.5 seconds 4 387 T4 Positive Yes / No 4.5 seconds 4 388 W8 Negative Yes / No 4.5 seconds 4 389 P7 Positive Yes / No 4.5 seconds 4 390 X9 Negative Yes / No 4.5 seconds 4 391 H9 Positive Yes / No 4.5 seconds 4 392 Y1 Negative Yes / No 4.5 seconds 4 393 N6 Positive Yes / No 4.5 seconds 4 394 P7 Positive Yes / No 4.5 seconds 4 395 A3 Negative Yes / No 4.5 seconds 4 396 T4 Positive Yes / No 4.5 seconds 4 397 B4 Negative Yes / No 4.5 seconds 4 398 C5 Negative Yes / No 4.5 seconds 4 399 P7 Positive Yes / No 4.5 seconds 4 400 D6 Negative Yes / No 4.5 seconds 4 401 H9 Positive Yes / No 4.5 seconds 4 402 E7 Negative Yes / No 4.5 seconds 4 403 N6 Positive Yes / No 4.5 seconds 4 404 F8 Negative Yes / No 4.5 seconds 4 405 G9 Negative Yes / No 4.5 seconds 4 406 T4 Positive Yes / No 4.5 seconds 4 407 H1 Negative Yes / No 4.5 seconds 4 408 P7 Positive Yes / No 4.5 seconds 4 409 I2 Negative Yes / No 4.5 seconds 4 410 J3 Negative Yes / No 4.5 seconds 4 411 N6 Positive Yes / No 4.5 seconds 4 412 K4 Negative Yes / No 4.5 seconds 4 413 T4 Positive Yes / No 4.5 seconds 4 414 L5 Negative Yes / No 4.5 seconds 4 415 H9 Positive Yes / No 4.5 seconds 4 Trial No. Memory Set Probe Type Option s Time Displayed Letter Span B5 1.3 C8 seconds each F2 J6 W3 Z1 416 B5 Positive Yes / No 4.5 seconds 6 417 D4 Negative Yes / No 4.5 seconds 6 418 C8 Positive Yes / No 4.5 seconds 6 419 F2 Positive Yes / No 4.5 seconds 6 420 A7 Negative Yes / No 4.5 seconds 6 421 H3 Negative Yes / No 4.5 seconds 6 422 J6 Positive Yes / No 4.5 seconds 6 423 Z1 Positive Yes / No 4.5 seconds 6 424 P9 Negative Yes / No 4.5 seconds 6 425 W3 Positive Yes / No 4.5 seconds 6 426 E4 Negative Yes / No 4.5 seconds 6 427 Q4 Negative Yes / No 4.5 seconds 6 428 L2 Negative Yes / No 4.5 seconds 6 429 F2 Positive Yes / No 4.5 seconds 6 430 B5 Positive Yes / No 4.5 seconds 6 431 N7 Negative Yes / No 4.5 seconds 6 432 T6 Negative Yes / No 4.5 seconds 6 433 Z1 Positive Yes / No 4.5 seconds 6 434 M8 Negative Yes / No 4.5 seconds 6 435 J6 Positive Yes / No 4.5 seconds 6 436 C8 Positive Yes / No 4.5 seconds 6 437 B5 Positive Yes / No 4.5 seconds 6 438 R5 Negative Yes / No 4.5 seconds 6 439 Y4 Negative Yes / No 4.5 seconds 6 440 W3 Positive Yes / No 4.5 seconds 6 441 F2 Positive Yes / No 4.5 seconds 6 442 E7 Negative Yes / No 4.5 seconds 6 443 K9 Negative Yes / No 4.5 seconds 6 444 C8 Positive Yes / No 4.5 seconds 6 445 V6 Negative Yes / No 4.5 seconds 6 446 J6 Positive Yes / No 4.5 seconds 6 447 U2 Negative Yes / No 4.5 seconds 6 448 S1 Negative Yes / No 4.5 seconds 6 449 B5 Positive Yes / No 4.5 seconds 6 450 W3 Positive Yes / No 4.5 seconds 6 451 F2 Positive Yes / No 4.5 seconds 6 452 H4 Negative Yes / No 4.5 seconds 6 453 Z1 Positive Yes / No 4.5 seconds 6 454 G7 Negative Yes / No 4.5 seconds 6 455 J6 Positive Yes / No 4.5 seconds 6 456 Q8 Negative Yes / No 4.5 seconds 6 457 F2 Positive Yes / No 4.5 seconds 6 458 Z1 Positive Yes / No 4.5 seconds 6 459 D9 Negative Yes / No 4.5 seconds 6 460 B5 Positive Yes / No 4.5 seconds 6 461 E3 Negative Yes / No 4.5 seconds 6 462 W3 Positive Yes / No 4.5 seconds 6 463 F2 Positive Yes / No 4.5 seconds 6 464 J6 Positive Yes / No 4.5 seconds 6 465 O5 Negative Yes / No 4.5 seconds 6 466 L6 Negative Yes / No 4.5 seconds 6 467 C8 Positive Yes / No 4.5 seconds 6 468 W3 Positive Yes / No 4.5 seconds 6 469 N4 Negative Yes / No 4.5 seconds 6 470 R7 Negative Yes / No 4.5 seconds 6 471 Z1 Positive Yes / No 4.5 seconds 6 472 J6 Positive Yes / No 4.5 seconds 6 473 T8 Negative Yes / No 4.5 seconds 6 474 D4 Negative Yes / No 4.5 seconds 6 475 X2 Negative Yes / No 4.5 seconds 6 476 C8 Positive Yes / No 4.5 seconds 6 477 V5 Negative Yes / No 4.5 seconds 6 478 K1 Negative Yes / No 4.5 seconds 6 479 G8 Negative Yes / No 4.5 seconds 6 480 W3 Positive Yes / No 4.5 seconds 6 Main Task Flow Table Adults Version- 4th triad of stimuli (2,4,6) (to be displayed in the computer interface in the same order). Trial No. Memory Set Probe Type Options Time Displayed Letter Span J5 H2 1.3 seconds each 481 J5 Positive Yes / No 4.5 seconds 2 482 H2 Positive Yes / No 4.5 seconds 2 483 J5 Positive Yes / No 4.5 seconds 2 484 A1 Negative Yes / No 4.5 seconds 2 485 B2 Negative Yes / No 4.5 seconds 2 486 C3 Negative Yes / No 4.5 seconds 2 487 H2 Positive Yes / No 4.5 seconds 2 488 D4 Negative Yes / No 4.5 seconds 2 489 J5 Positive Yes / No 4.5 seconds 2 490 E5 Negative Yes / No 4.5 seconds 2 491 F6 Negative Yes / No 4.5 seconds 2 492 H2 Positive Yes / No 4.5 seconds 2 493 J5 Positive Yes / No 4.5 seconds 2 494 J5 Positive Yes / No 4.5 seconds 2 495 H2 Positive Yes / No 4.5 seconds 2 496 G7 Negative Yes / No 4.5 seconds 2 497 H8 Negative Yes / No 4.5 seconds 2 498 I9 Negative Yes / No 4.5 seconds 2 499 J5 Positive Yes / No 4.5 seconds 2 500 K1 Negative Yes / No 4.5 seconds 2 501 L2 Negative Yes / No 4.5 seconds 2 502 H2 Positive Yes / No 4.5 seconds 2 503 M3 Negative Yes / No 4.5 seconds 2 504 N4 Negative Yes / No 4.5 seconds 2 505 O5 Negative Yes / No 4.5 seconds 2 506 J5 Positive Yes / No 4.5 seconds 2 507 H2 Positive Yes / No 4.5 seconds 2 508 P6 Negative Yes / No 4.5 seconds 2 509 J5 Positive Yes / No 4.5 seconds 2 510 H2 Positive Yes / No 4.5 seconds 2 Trial No. Memory Set Probe Type Options Time Displayed Letter Span M8 Q5 K4 S7 1.3 seconds each 511 M8 Positive Yes / No 4.5 seconds 4 512 Q5 Positive Yes / No 4.5 seconds 4 513 K4 Positive Yes / No 4.5 seconds 4 514 S7 Positive Yes / No 4.5 seconds 4 515 A1 Negative Yes / No 4.5 seconds 4 516 B2 Negative Yes / No 4.5 seconds 4 517 C3 Negative Yes / No 4.5 seconds 4 518 M8 Positive Yes / No 4.5 seconds 4 519 Q5 Positive Yes / No 4.5 seconds 4 520 D4 Negative Yes / No 4.5 seconds 4 521 E5 Negative Yes / No 4.5 seconds 4 522 K4 Positive Yes / No 4.5 seconds 4 523 S7 Positive Yes / No 4.5 seconds 4 524 F6 Negative Yes / No 4.5 seconds 4 525 G7 Negative Yes / No 4.5 seconds 4 526 H8 Negative Yes / No 4.5 seconds 4 527 M8 Positive Yes / No 4.5 seconds 4 528 Q5 Positive Yes / No 4.5 seconds 4 529 K4 Positive Yes / No 4.5 seconds 4 530 I9 Negative Yes / No 4.5 seconds 4 531 J1 Negative Yes / No 4.5 seconds 4 532 S7 Positive Yes / No 4.5 seconds 4 533 M8 Positive Yes / No 4.5 seconds 4 534 Q5 Positive Yes / No 4.5 seconds 4 535 K4 Positive Yes / No 4.5 seconds 4 536 L2 Negative Yes / No 4.5 seconds 4 537 M3 Negative Yes / No 4.5 seconds 4 538 N4 Negative Yes / No 4.5 seconds 4 539 S7 Positive Yes / No 4.5 seconds 4 540 O5 Negative Yes / No 4.5 seconds 4 541 P6 Negative Yes / No 4.5 seconds 4 542 Q5 Positive Yes / No 4.5 seconds 4 543 K4 Positive Yes / No 4.5 seconds 4 544 R7 Negative Yes / No 4.5 seconds 4 545 S7 Positive Yes / No 4.5 seconds 4 546 T1 Negative Yes / No 4.5 seconds 4 547 U2 Negative Yes / No 4.5 seconds 4 548 V3 Negative Yes / No 4.5 seconds 4 549 M8 Positive Yes / No 4.5 seconds 4 550 Q5 Positive Yes / No 4.5 seconds 4 551 W4 Negative Yes / No 4.5 seconds 4 552 X5 Negative Yes / No 4.5 seconds 4 553 Y6 Negative Yes / No 4.5 seconds 4 554 K4 Positive Yes / No 4.5 seconds 4 555 Z7 Negative Yes / No 4.5 seconds 4 556 S7 Positive Yes / No 4.5 seconds 4 557 M8 Positive Yes / No 4.5 seconds 4 558 Q5 Positive Yes / No 4.5 seconds 4 559 A8 Negative Yes / No 4.5 seconds 4 560 B9 Negative Yes / No 4.5 seconds 4 561 C1 Negative Yes / No 4.5 seconds 4 562 K4 Positive Yes / No 4.5 seconds 4 563 S7 Positive Yes / No 4.5 seconds 4 564 D2 Negative Yes / No 4.5 seconds 4 565 M8 Positive Yes / No 4.5 seconds 4 566 Q5 Positive Yes / No 4.5 seconds 4 567 E3 Negative Yes / No 4.5 seconds 4 568 F4 Negative Yes / No 4.5 seconds 4 569 K4 Positive Yes / No 4.5 seconds 4 570 S7 Positive Yes / No 4.5 seconds 4 571 G5 Negative Yes / No 4.5 seconds 4 572 H6 Negative Yes / No 4.5 seconds 4 573 M8 Positive Yes / No 4.5 seconds 4 574 Q5 Positive Yes / No 4.5 seconds 4 575 L2 Negative Yes / No 4.5 seconds 4 Trial No. Memory Set Probe Type Options Time Displayed Letter Span A3 C6 G8 L9 P2 Y5 1.3 seconds each 576 A3 Positive Yes / No 4.5 seconds 6 577 C6 Positive Yes / No 4.5 seconds 6 578 G8 Positive Yes / No 4.5 seconds 6 579 D4 Negative Yes / No 4.5 seconds 6 580 E1 Negative Yes / No 4.5 seconds 6 581 L9 Positive Yes / No 4.5 seconds 6 582 F5 Negative Yes / No 4.5 seconds 6 583 P2 Positive Yes / No 4.5 seconds 6 584 H3 Negative Yes / No 4.5 seconds 6 585 Y5 Positive Yes / No 4.5 seconds 6 586 I6 Negative Yes / No 4.5 seconds 6 587 J7 Negative Yes / No 4.5 seconds 6 588 K8 Negative Yes / No 4.5 seconds 6 589 A3 Positive Yes / No 4.5 seconds 6 590 C6 Positive Yes / No 4.5 seconds 6 591 G8 Positive Yes / No 4.5 seconds 6 592 K7 Negative Yes / No 4.5 seconds 6 593 B2 Negative Yes / No 4.5 seconds 6 594 M1 Negative Yes / No 4.5 seconds 6 595 P2 Positive Yes / No 4.5 seconds 6 596 Y5 Positive Yes / No 4.5 seconds 6 597 N4 Negative Yes / No 4.5 seconds 6 598 O7 Negative Yes / No 4.5 seconds 6 599 A3 Positive Yes / No 4.5 seconds 6 600 C6 Positive Yes / No 4.5 seconds 6 601 G8 Positive Yes / No 4.5 seconds 6 602 W3 Negative Yes / No 4.5 seconds 6 603 P2 Positive Yes / No 4.5 seconds 6 604 Q3 Negative Yes / No 4.5 seconds 6 605 R5 Negative Yes / No 4.5 seconds 6 606 Y5 Positive Yes / No 4.5 seconds 6 607 S6 Negative Yes / No 4.5 seconds 6 608 T7 Negative Yes / No 4.5 seconds 6 609 A3 Positive Yes / No 4.5 seconds 6 610 C6 Positive Yes / No 4.5 seconds 6 611 U8 Negative Yes / No 4.5 seconds 6 612 V9 Negative Yes / No 4.5 seconds 6 613 G8 Positive Yes / No 4.5 seconds 6 614 W1 Negative Yes / No 4.5 seconds 6 615 X2 Negative Yes / No 4.5 seconds 6 616 L9 Positive Yes / No 4.5 seconds 6 617 P2 Positive Yes / No 4.5 seconds 6 618 Y5 Positive Yes / No 4.5 seconds 6 619 A4 Negative Yes / No 4.5 seconds 6 620 B5 Negative Yes / No 4.5 seconds 6 621 C6 Positive Yes / No 4.5 seconds 6 622 D7 Negative Yes / No 4.5 seconds 6 623 G8 Positive Yes / No 4.5 seconds 6 624 M4 Negative Yes / No 4.5 seconds 6 625 P2 Positive Yes / No 4.5 seconds 6 626 Y5 Positive Yes / No 4.5 seconds 6 627 E1 Negative Yes / No 4.5 seconds 6 628 F3 Negative Yes / No 4.5 seconds 6 629 A3 Positive Yes / No 4.5 seconds 6 630 B5 Negative Yes / No 4.5 seconds 6 631 G8 Positive Yes / No 4.5 seconds 6 632 L9 Positive Yes / No 4.5 seconds 6 633 P2 Positive Yes / No 4.5 seconds 6 634 Y5 Positive Yes / No 4.5 seconds 6 635 G1 Negative Yes / No 4.5 seconds 6 636 H2 Negative Yes / No 4.5 seconds 6 637 I3 Negative Yes / No 4.5 seconds 6 638 A3 Positive Yes / No 4.5 seconds 6 639 C6 Positive Yes / No 4.5 seconds 6 640 V7 Negative Yes / No 4.5 seconds 6 Main Task Flow Table- Adults Version- 5th triad of stimuli (2,4,6) (to be displayed in the computer interface in the same order) Trial No. Memory Set Probe Type Options Time Displayed Letter Span K6 N3 1.3 seconds each 641 K6 Positive Yes / No 4.5 seconds 2 642 N3 Positive Yes / No 4.5 seconds 2 643 A1 Negative Yes / No 4.5 seconds 2 644 B4 Negative Yes / No 4.5 seconds 2 645 K6 Positive Yes / No 4.5 seconds 2 646 C2 Negative Yes / No 4.5 seconds 2 647 N3 Positive Yes / No 4.5 seconds 2 648 N3 Positive Yes / No 4.5 seconds 2 649 E5 Negative Yes / No 4.5 seconds 2 650 K6 Positive Yes / No 4.5 seconds 2 651 F9 Negative Yes / No 4.5 seconds 2 652 N3 Positive Yes / No 4.5 seconds 2 653 G3 Negative Yes / No 4.5 seconds 2 654 H6 Negative Yes / No 4.5 seconds 2 655 K6 Positive Yes / No 4.5 seconds 2 656 I2 Negative Yes / No 4.5 seconds 2 657 N3 Positive Yes / No 4.5 seconds 2 658 J8 Negative Yes / No 4.5 seconds 2 659 K6 Positive Yes / No 4.5 seconds 2 660 N3 Positive Yes / No 4.5 seconds 2 661 K1 Negative Yes / No 4.5 seconds 2 662 L4 Negative Yes / No 4.5 seconds 2 663 K6 Positive Yes / No 4.5 seconds 2 664 N3 Positive Yes / No 4.5 seconds 2 665 M5 Negative Yes / No 4.5 seconds 2 666 N6 Negative Yes / No 4.5 seconds 2 667 K6 Positive Yes / No 4.5 seconds 2 668 N3 Positive Yes / No 4.5 seconds 2 669 O7 Negative Yes / No 4.5 seconds 2 670 P9 Negative Yes / No 4.5 seconds 2 Trial No. Memory Set Probe Type Options Time Displayed Letter Span E4 G7 R1 T6 1.3 seconds each 671 E4 Positive Yes / No 4.5 seconds 4 672 Y3 Negative Yes / No 4.5 seconds 4 673 R1 Positive Yes / No 4.5 seconds 4 674 A3 Negative Yes / No 4.5 seconds 4 675 T6 Positive Yes / No 4.5 seconds 4 676 B5 Negative Yes / No 4.5 seconds 4 677 C8 Negative Yes / No 4.5 seconds 4 678 E4 Positive Yes / No 4.5 seconds 4 679 D2 Negative Yes / No 4.5 seconds 4 680 G7 Positive Yes / No 4.5 seconds 4 681 R1 Positive Yes / No 4.5 seconds 4 682 F6 Negative Yes / No 4.5 seconds 4 683 T6 Positive Yes / No 4.5 seconds 4 684 H9 Negative Yes / No 4.5 seconds 4 685 I1 Negative Yes / No 4.5 seconds 4 686 E4 Positive Yes / No 4.5 seconds 4 687 G7 Positive Yes / No 4.5 seconds 4 688 R1 Positive Yes / No 4.5 seconds 4 689 J3 Negative Yes / No 4.5 seconds 4 690 T6 Positive Yes / No 4.5 seconds 4 691 A6 Negative Yes / No 4.5 seconds 4 692 L7 Negative Yes / No 4.5 seconds 4 693 E4 Positive Yes / No 4.5 seconds 4 694 G7 Positive Yes / No 4.5 seconds 4 695 R1 Positive Yes / No 4.5 seconds 4 696 M2 Negative Yes / No 4.5 seconds 4 697 T6 Positive Yes / No 4.5 seconds 4 698 N4 Negative Yes / No 4.5 seconds 4 699 O8 Negative Yes / No 4.5 seconds 4 700 E4 Positive Yes / No 4.5 seconds 4 701 G7 Positive Yes / No 4.5 seconds 4 702 D5 Negative Yes / No 4.5 seconds 4 703 T6 Positive Yes / No 4.5 seconds 4 704 P1 Negative Yes / No 4.5 seconds 4 705 Q3 Negative Yes / No 4.5 seconds 4 706 E4 Positive Yes / No 4.5 seconds 4 707 C1 Negative Yes / No 4.5 seconds 4 708 R1 Positive Yes / No 4.5 seconds 4 709 T6 Positive Yes / No 4.5 seconds 4 710 R2 Negative Yes / No 4.5 seconds 4 711 S5 Negative Yes / No 4.5 seconds 4 712 E4 Positive Yes / No 4.5 seconds 4 713 G7 Positive Yes / No 4.5 seconds 4 714 Y3 Negative Yes / No 4.5 seconds 4 715 T6 Positive Yes / No 4.5 seconds 4 716 T7 Negative Yes / No 4.5 seconds 4 717 U8 Negative Yes / No 4.5 seconds 4 718 E4 Positive Yes / No 4.5 seconds 4 719 G7 Positive Yes / No 4.5 seconds 4 720 R1 Positive Yes / No 4.5 seconds 4 721 V4 Negative Yes / No 4.5 seconds 4 722 V2 Negative Yes / No 4.5 seconds 4 723 W3 Negative Yes / No 4.5 seconds 4 724 E4 Positive Yes / No 4.5 seconds 4 725 G7 Positive Yes / No 4.5 seconds 4 726 R1 Positive Yes / No 4.5 seconds 4 727 T6 Positive Yes / No 4.5 seconds 4 728 X1 Negative Yes / No 4.5 seconds 4 729 Y4 Negative Yes / No 4.5 seconds 4 730 E4 Positive Yes / No 4.5 seconds 4 731 G7 Positive Yes / No 4.5 seconds 4 732 U3 Negative Yes / No 4.5 seconds 4 733 B7 Negative Yes / No 4.5 seconds 4 734 Z5 Negative Yes / No 4.5 seconds 4 735 A6 Negative Yes / No 4.5 seconds 4 Trial No. Memory Set Probe Type Options Time Displayed Letter Span B8 1.3 D2 seconds each F9 H5 X4 Z7 736 B8 Positive Yes / No 4.5 seconds 6 737 D2 Positive Yes / No 4.5 seconds 6 738 F9 Positive Yes / No 4.5 seconds 6 739 A1 Negative Yes / No 4.5 seconds 6 740 H5 Positive Yes / No 4.5 seconds 6 741 X4 Positive Yes / No 4.5 seconds 6 742 Z7 Positive Yes / No 4.5 seconds 6 743 C3 Negative Yes / No 4.5 seconds 6 744 D2 Negative Yes / No 4.5 seconds 6 745 B8 Positive Yes / No 4.5 seconds 6 746 F9 Positive Yes / No 4.5 seconds 6 747 G5 Negative Yes / No 4.5 seconds 6 748 H5 Positive Yes / No 4.5 seconds 6 749 X4 Positive Yes / No 4.5 seconds 6 750 I2 Negative Yes / No 4.5 seconds 6 751 Z7 Positive Yes / No 4.5 seconds 6 752 J3 Negative Yes / No 4.5 seconds 6 753 B8 Positive Yes / No 4.5 seconds 6 754 D2 Positive Yes / No 4.5 seconds 6 755 E5 Negative Yes / No 4.5 seconds 6 756 K1 Negative Yes / No 4.5 seconds 6 757 H5 Negative Yes / No 4.5 seconds 6 758 D2 Positive Yes / No 4.5 seconds 6 759 Z7 Negative Yes / No 4.5 seconds 6 760 B8 Positive Yes / No 4.5 seconds 6 761 D2 Positive Yes / No 4.5 seconds 6 762 F9 Positive Yes / No 4.5 seconds 6 763 H5 Negative Yes / No 4.5 seconds 6 764 X4 Negative Yes / No 4.5 seconds 6 765 Z7 Negative Yes / No 4.5 seconds 6 766 B8 Positive Yes / No 4.5 seconds 6 767 Y6 Negative Yes / No 4.5 seconds 6 768 F9 Positive Yes / No 4.5 seconds 6 769 H5 Negative Yes / No 4.5 seconds 6 770 X4 Negative Yes / No 4.5 seconds 6 771 Z7 Negative Yes / No 4.5 seconds 6 772 B8 Positive Yes / No 4.5 seconds 6 773 J7 Negative Yes / No 4.5 seconds 6 774 F9 Positive Yes / No 4.5 seconds 6 775 H5 Positive Yes / No 4.5 seconds 6 776 X4 Negative Yes / No 4.5 seconds 6 777 Z7 Negative Yes / No 4.5 seconds 6 778 B8 Positive Yes / No 4.5 seconds 6 779 D2 Positive Yes / No 4.5 seconds 6 780 Z7 Negative Yes / No 4.5 seconds 6 781 H5 Negative Yes / No 4.5 seconds 6 782 X4 Negative Yes / No 4.5 seconds 6 783 F9 Positive Yes / No 4.5 seconds 6 784 B8 Positive Yes / No 4.5 seconds 6 785 D2 Positive Yes / No 4.5 seconds 6 786 F9 Positive Yes / No 4.5 seconds 6 787 H5 Negative Yes / No 4.5 seconds 6 788 X4 Negative Yes / No 4.5 seconds 6 789 Z7 Negative Yes / No 4.5 seconds 6 790 B8 Positive Yes / No 4.5 seconds 6 791 X4 Negative Yes / No 4.5 seconds 6 792 F9 Positive Yes / No 4.5 seconds 6 793 H5 Negative Yes / No 4.5 seconds 6 794 D2 Negative Yes / No 4.5 seconds 6 795 Z7 Negative Yes / No 4.5 seconds 6 796 B8 Positive Yes / No 4.5 seconds 6 797 D2 Positive Yes / No 4.5 seconds 6 798 F9 Positive Yes / No 4.5 seconds 6 799 H5 Negative Yes / No 4.5 seconds 6 800 X4 Negative Yes / No 4.5 seconds 6 5. After the participant completes all the blocks, we would give instructions that emphasize the end of this task. Adolescents (14-18 years) "Awesome work! You've completed this challenge - stay sharp, the next one is coming up!" Adults (18-22 years) "Well done! You've successfully finished this task - let's move on to the next part." 5. Implementation Notes ? Each span runs all its probe trials before moving to the next span ? Sequential & Alternating Presentation: Memory set spans alternate throughout the task (1?3?5 or 2?4?6) ? Probe remains visible until response ? Inter-Round Interval (ITI): 300 ms recommended 6. Scoring Instruction Manual for tech team: Data Columns Required (will not be shown to participants for interpretation): ? Round Number: Sequential number identifying each round. ? Memory Set Size: Number of items in the memory set for that round. ? Probe Item: The item presented for recognition in the round. ? Probe Type: Indicate whether the probe is a Target (included in the memory set) or a Non-Target (not included). ? Participant Response: Indicate whether the participant responds 'Yes' (recognizing the probe as in the memory set) or 'No'. ? Response Accuracy: Score 1 if the participant correctly identifies the probe ("Yes" for Target, "No" for Non-Target), otherwise 0. ? Reaction Time (RT): Time in milliseconds from probe presentation to participant response. Scoring Instructions: ? When the participant correctly recognizes the probe item as a member (for Targets) or non-member (for Non-Targets), assign a score of 1 (Correct Response). ? When the participant incorrectly responds (e.g., 'Yes' to Non-Target or 'No' to Target), assign a score of 0 (Incorrect Response). ? Record Reaction Time (RT) only for trials where the participant responded. Additional Scoring Parameters: ? Total Rounds Answered: Count of all probe rounds where participants responded. ? Total Rounds Not Answered: Count of all probe rounds with no response. ? Correct Responses: Sum of all probe rounds with correct response (score = 1). ? Incorrect Responses: Sum of all probe rounds with incorrect response (score = 0). ? Accuracy Rate: ? Accuracy = Correct Responses/ Total Rounds Answered×100. ? Mean Reaction Time: Average RT across all correctly answered rounds.