Table 2. Mean Reaction Times and Error Rates for Simulated Young and Old Adults.
| Scenario | Young | Old (d = .2) | Old (d = 1.4) | |||
|---|---|---|---|---|---|---|
| Easy | Hard | Easy | Hard | Easy | Hard | |
| Note. SDs given in parentheses. Older adult means are reported for the smallest (d = .2) and largest (d = 1.4) effect sizes simulated. Means for young adults come from the d = .2 scenarios, though only the parameter distributions used to simulate older adult data varied across effect sizes. | ||||||
| Reaction time (ms) | ||||||
| A: Domain | 667 (69) | 755 (106) | 665 (69) | 760 (108) | 668 (67) | 806 (122) |
| B: General | 667 (71) | 755 (108) | 670 (72) | 767 (111) | 705 (90) | 829 (139) |
| C: Strategic | 635 (70) | 700 (99) | 641 (70) | 711 (102) | 696 (73) | 804 (114) |
| D: Nondecision | 617 (71) | 704 (107) | 629 (71) | 719 (109) | 688 (72) | 779 (112) |
| Error rates (%) | ||||||
| A: Domain | 1 (1) | 4 (4) | 1 (1) | 4 (4) | 1 (1) | 8 (6) |
| B: General | 1 (1) | 4 (4) | 1 (1) | 5 (5) | 2 (2) | 11 (7) |
| C: Strategic | 2 (3) | 6 (6) | 1 (2) | 5 (5) | 0 (1) | 3 (3) |
| D: Nondecision | 1 (2) | 4 (4) | 1 (1) | 4 (4) | 1 (1) | 4 (4) |