Table 1.
Participant characteristics by age group.
| Younger N = 60 |
Older N = 60 |
Statistic | ||||
|---|---|---|---|---|---|---|
| Characteristic | M | (SD) | M | (SD) | t(118) | p |
| Age (in years) | 22.58 | (3.00) | 72.43 | (5.11) | ||
| Sex | 48% F, 52% M | 48% F, 52% M | ||||
| Ethnicity | 35% AA, 65% EA | 35% AA, 65% EA | ||||
| Education (in years) | 14.59 | (1.51) | 15.19 | (2.35) | 1.65 | >.1 |
| Scaled Income | 2.93 | (0.98) | 2.77 | (1.00) | .92 | >.3 |
| Self-reported Health (Wahler) | 42.25 | (25.46) | 39.42 | (20.78) | 0.67 | >.5 |
| Vocabulary (WAIS-III) | 45.15 | (11.35) | 44.52 | (12.31) | 0.29 | >.7 |
| Digit-Symbol Coding (WAIS-III) | 85.92 | (16.24) | 55.62 | (11.95) | 11.64 | <.001 |
| Digit Span (WAIS-III) | 19.05 | (3.62) | 17.07 | (3.97) | 2.86 | <.01 |
Note. Sex: F = Female, M = Male; Ethnicity: AA = African American, EA = European American; Scaled Income: on a scale of 1–5 (with 1 indicating “lower income” and 5 indicating “upper income”); Self-reported Health (Wahler, 1973): rating of 42 different symptoms on a scale of 0–5, maximum score = 210; Vocabulary from the WAIS-III (Wechsler, 1997): maximum score = 66; Digit-Symbol Coding from the WAIS-III: maximum score = 133; Digit Span from the WAIS-III: maximum score = 30.