Table 5.
Summary of working memory scores of groups of rats selected in each task.
| Impulsive task | groups | Total number of errors | Errors in the first 8 choices | Time to reach the pellets |
| Fixed consecutive number schedule (FCN 8) | LOWFCN | 5.4 ± 0.4 | 2.0 ± 0.2 | 8.9 ± 0.8 |
| INTFCN | 4.1 ± 0.7 | 1.6 ± 0.2 | 9.7 ± 0.9 | |
| HIGHFCN | 4.9 ± 0.6 | 1.8 ± 0.1 | 9.0 ± 0.8 | |
| Multiple Fixed interval/extinction schedules of reinforcement | LOWFI | 4.8 ± 0.7 | 1.6 ± 0.1 | 9.9 ± 1.2 |
| INTFI | 4.6 ± 0.4 | 1.8 ± 0.1 | 9.3 ± 0.6 | |
| HIGHFI | 4.8 ± 0.7 | 2.0 ± 0.2 | 8.6 ± 0.6 | |
| LOWEXT | 3.8 ± 0.5 | 1.4 ± 0.2 | 8.7 ± 0.8 | |
| INTEXT | 4.4 ± 0.4 | 1.7 ± 0.1 | 8.7 ± 0.5 | |
| HIGHEXT | 5.7 ± 0.5* | 2.3 ± 0.2** | 8.3 ± 0.5 | |
| Delay discounting | LOWCHX | 4.7 ± 0.6 | 1.9 ± 0.2 | 8.9 ± 0.5 |
| INTCHX | 4.7 ± 0.4 | 1.9 ± 0.9 | 8.9 ± 0.7 | |
| HIGHCHX | 4.1 ± 0.7 | 1.5 ± 0.2 | 10.4 ± 1.4 |
Groups of rats were selected for their level of inhibition in the Fixed Consecutive Number schedule of reinforcement task (FCN8); their level of activity in the Multiple Fixed interval/extinction schedules or their choice for the larger reward in the Delay discouting task. Scores measured in the 8-arm radial maze (mean of the 5 last sessions ± SEM) were compared between groups with low scores (LOW), intermediate (INT) and high scores (HIGH) in each task. Parameters measured in the radial maze (mean of the five last sessions ± SEM) were compared between groups. Statistical analysis of comparisons with HIGH, GLM with adjusted p-values (FDR procedure) **, p < .01, * p = .05.