Orangutans (Pongo pygmaeus) recognize their own past actions.

ABSTRACT: The ability to recognize oneself in a mirror is known as self-recognition, whereas delayed self-recognition is the ability to recognize the relationship between current self and past actions. While 3-year-old human children have self-recognition without the ability for delayed self-recognition, 4-year-old human children demonstrate the capability for both. Chimpanzees, the most closely related species to humans, have displayed the ability for delayed self-recognition. However, little is known about whether this ability is shared among all hominid species. In this study, we examined whether orangutans, the most distantly related species to humans within the hominid group, could recognize their own past actions using the preferential-looking paradigm. Our results demonstrated that orangutans

SUBMITTER: Hanazuka Y 

PROVIDER: S-EPMC6304147 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature