Table 1.
Delayed response training data.
| Female | Male | |||
|---|---|---|---|---|
| Characteristic | Young, N = 21 | Aged, N = 40 | Young, N = 13 | Aged, N = 30 |
| Trials to criterion, 0 s | 98 (0–300) | 143 (0–665) | 92 (0–410) | 56 (0–260) |
| Trials to criterion, 1 s | 102 (0–614) | 372 (0–1990)1 | 87 (0–280) | 136 (0–515) |
| Age at testing (years) | 7.3 (3.5–13.6) | 24.4 (20.3–29.7) | 8.1 (4.3–13.0) | 25.7 (19.9–32.5) |
Data presented are means and ranges for trials to criterion, excluding the criterion run, at 0 and 1 s delays, and the age of the monkeys in each group at testing. Data are disaggregated by sex for each age group.
1
N = 39 instead of 40 (one monkey did not train to criterion at 1 s)