Figure 3.

Persistence: number of inadequate pokes per trial towards LLL hole. Mean (±SEM) number per trial of LLL-inadequate pokes (i.e., performed during the postchoice TO interval, when they were without any consequence). Subjects are the same as in Figure 2. The “gambler” marmosets showed a significant increase in persistence at very low probability values, suggesting that they were still seeking for LLL during TO durations. **P < 0.01 gambler marmosets significantly different from non-gambler marmosets in post hoc test; ^$$ P < 0.01 gambler marmosets significantly different from gambler rats in post hoc test.