Fig. 5: Incremental relationship between reward captures and residence times.

a A dot plot on group level for all humans plotting individual averaged residence times as a function of a number of rewards per patch. Black dots index individual means. The gray line indicates the averaged empirical slope obtained from the within-subject regressions, regressing residence times on the number of rewards for both groups of humans. Subgroups were not distinguished further because the empirical slopes between short-GUT and long-GUT humans did not differ. The black line shows the averaged slope obtained in the same within-subject regression analysis (residence time ~ reward) but performed on the simulated number of rewards. b The same dot plot for the gerbils, where each dot represents an animal’s averaged residence time as a function of reward. Colored lines in blue (long-GUT) and green (short-GUT) indicate the averaged empirical slopes obtained in the within-subject regressions (residence time ~ reward). The black regression line indexes the average slope obtained from the within-subject regressions based on the simulated number of rewards.