Proactive common waxbills make fewer mistakes in a cognitive assay, the detour-reaching task

摘要

Reactive individuals explore and make decisions more slowly than proactive individuals, paying more attention to external cues. Reactive personality types are therefore predicted to make fewer mistakes in cognitive tasks, especially in tests of inhibitory control and reversal learning that require individuals to adjust behavioral routines. However, empirical evidence for this is mixed, and work relating cognition to a broader set of phenotypic traits has been called for. Here, using the common waxbill (Estrilda astrild), we relate performance in a cognitive assay, the detour-reaching task, to differences in personality, while controlling for putative confounding factors (including sex, breath rate, body size, and mass). Contrary to theoretical predictions, we found that proactive individuals, rather than reactive, made fewer mistakes in the detour-reaching task. We used body size and mass as proxies for condition, but neither predicted personality type or cognitive performance, thus providing no support for the hypothesis that condition dependence mediates the association between proactive personality and detour-reaching performance. This work adds to a growing number of studies contributing conflicting findings on how animal personality relates to cognitive performance, which, together, appear to require novel theory and more nuanced predictions.