# Chimpanzees (Pan troglodytes) show subtle signs of uncertainty when choices are more difficult

> Research article (Cognition, 2021) · cited 14× · AI/ML

**Wikidata**: [openalex:W3164197303](https://www.wikidata.org/wiki/openalex:W3164197303)  
**Source**: https://4ort.xyz/entity/chimpanzees-pan-troglodytes-show-subtle-signs-of-uncertainty-when-choices-are-more-difficult