Table 2.
Descriptive statistics for tests assessing general intellectual abilities for younger and older adults.
| Young | Old | Group comparison | |||||
|---|---|---|---|---|---|---|---|
| M | SD | M | SD | t | df | p | |
| Digit letter test | 131.57 | 16.41 | 122.93 | 16.48 | 1.93 | 26 | 0.18 |
| LPS-3 | 28.43 | 4.25 | 25.21 | 6.58 | 2.38 | 26 | 0.14 |
| MWT-B | 31.29 | 2.76 | 34.0 | 2.25 | −8.13 | 26 | 0.01 |
| Ten-Word-List | 8.43 | 0.94 | 6.93 | 1.07 | 15.54 | 26 | 0.001 |
| FCSRT (free recall 1) | 12.69 | 1.25 | 10.38 | 2.43 | 9.27 | 26 | 0.01 |
| FCRST (free recall 2) | 14.08 | 1.12 | 12.31 | 1.44 | 12.31 | 26 | 0.01 |
| FCRST (free recall 3) | 14.85 | 1.21 | 13.46 | 1.39 | 7.38 | 26 | 0.05 |
| RTMT-A | 24.93 | 6.65 | 39.14 | 10.41 | 18.55 | 26 | 0.001 |
| RTMT-B | 56.21 | 14.72 | 80.07 | 21.01 | 12.11 | 26 | 0.01 |
| SOPT (9 items) | 0.83 | 0.57 | 1.5 | 0.69 | 7.86 | 26 | 0.01 |
| SOPT (16 items) | 1.62 | 0.87 | 2.57 | 1.05 | 6.82 | 26 | 0.05 |
| TOL | 53.21 | 2.36 | 52.57 | 1.74 | 0.673 | 26 | 0.42 |
| FAS | 42.14 | 8.93 | 37.07 | 10.94 | 1.81 | 26 | 0.19 |
| STROOP | 11.21 | 6.57 | 18.21 | 4.02 | 11.72 | 26 | 0.05 |
| WCST (errors) | 22.42 | 14.88 | 38.5 | 18.41 | 5.14 | 26 | 0.05 |
Mean values (M), standard deviations (SD) and t-tests for independent groups are displayed. LPS-3, Leistungsprüfsystem Test 3; MWT-B, Mehrfach-Wortwahl-Wortschatz test Version B; Ten-Word-List, Ten-Word-List with Encoding Enhancement; FCSRT, Free and Cued Selective Reminding Test; RTMT-A (B), Reitan Trail Making Task Part A (B); SOPT, Self Ordered Pointing Task; TOL, Tower of London Task; FAS, Controlled Oral Word Association Task; STROOP, Stroop Color-Word Interference Test; WCST, Wisconsin Card Sorting Test; number of false answers (errors) throughout the entire test.