Table 1.
Demographic characteristics of the sample by age group: Young Adults (YA; age 20–39), Middle Adulthood (MA; age 40–60), and Older Adults (OA; age 61–80).
| YA | MA | OA | Overall | Test Statistic | |
|---|---|---|---|---|---|
| (p-value) | |||||
| N | 45 | 49 | 48 | 142 | n/a |
| Age (SD) | 29.73 (5.127) | 50.69 (5.864) | 70.50 (4.524) | 50.75 (17.335) | F2,139=711.735 (<.001)1 |
| Education (SD) | 16.16 (1.731) | 15.71 (1.947) | 16.90 (2.769) | 16.25 (2.242) | F2,139=3.554 (0.031)2 |
| NART IQ (SD) | 114.81 (8.279) | 115.93 (8.301) | 121.66 (6.222) | 117.54 (8.165) | F2,134=10.598 (<.001)3 |
| % Female | 61.4 | 49.0 | 57.5 | 55.7 | χ22=1.527 (0.466) |
| VOCAB | −0.252 (0.846) | 0.146 (0.122) | 0.466 (0.792) | 0.126 (0.875) | F2,138=8.582 (<.001)4 |
| SPEED | −0.660 (0.690) | −0.043 (0.712) | 0.371 (0.748) | −0.085 (0.825) | F2,134=22.713 (<.001)1 |
| FLUID | 0.480 (0.740) | 0.093 (0.748) | −0.053 (0.740) | 0.166 (0.770) | F2,136=6.198 (0.003)5 |
| MEM | 0.406 (0.667) | 0.053 (0.594) | −0.239 (0.631) | 0.068 (0.678) | F2,135=11.813 (<.001)5 |
1
All three groups significantly differ (p<.05; Tukey HSD)
2
OA>MA (p<.05; Tukey HSD)
3
OA>MA and YA (p<.05; Tukey HSD)
4
OA>YA
5
YA>MA and OA (p<.05; Tukey HSD)
Note: NART=National Adult Reading Test. Bolded test statistics indicate those that are significant, and bolded group-level means highlight values that significantly differ by group.