Table 1.
Demographic data and descriptive statistics for the younger adult (left) and older adult (right) groups in Study 1.
| Task/information | Younger participants (N = 24) | Older participants (N = 21) |
|---|---|---|
| A. DEMOGRAPHIC INFORMATION | ||
| Age | 24.8 years (SD = 3.6) | 65.0 years (SD = 4.8) |
| Gender | 9 males | 10 males |
| B. BACKGROUND | ||
| Full IQ (NARTa) | 114.3 (SD = 11.22) | 125.7 (SD = 8.4) |
| Mini Mental State Examinationb | nt | Median = 30 (min = 28) |
| Vocabularyc | Median = 50 (IQR = 7) | Median = 57 (IQR = 7.5) |
| C. ATTENTION AND EXECUTIVE FUNCTIONS AND MEMORY | ||
| Attention network test (ANT)d | ||
| Orienting | 37.3 ms (SD = 18.5) | 54.0. ms (SD = 34.4) |
| Alerting | 24.9 ms (SD = 15.9) | 3.5 ms (SD = 41.8) |
| Conflict (incongruent-congruent) | 85.9 ms (SD = 20.5) | 116.3 ms (SD = 36.1) |
| Word Stroop task (Stroop effect)e | 21.5 ms (SD = 31.1) | 111.5 ms (SD = 89.9) |
| Number Stroop task (Stroop effect)f | ||
| Numerical comparison | 68.3 ms (SD = 36.6) | 110.3 ms (SD = 54.8) |
| Physical comparison | 51.1 ms (SD = 35.0) | 69.1 ms (SD = 39.4) |
| Visual memory (Door recognition)g | Median = 22 (IQR = 2) | Median = 20 (IQR = 4.5) |
| Verbal memory (Digit span)a | Median = 22 (IQR = 8) | Median = 22 (IQR = 6) |
| Spatial memory (Spatial span)a | Median = 10 (IQR = 6) | Median = 9 (IQR = 4.5) |
| D. CONTINUOUS QUANTITY PROCESSING | ||
| Time discrimination (wf) | 0.32 (95% CI: 0.06–1.65) | 0.30 (95% CI: 0.097–0.92) |
| Space discrimination (wf) | 0.043 (95% CI: 0.022–0.084) | 0.039 (95% CI: 0.012–0.127) |