PLoS ONE 5(2): e9131

Visual search for human gaze direction by a chimpanzee (Pan troglodytes).

Masaki Tomonaga, Tomoko Imura

Abstract

Humans detect faces with direct gazes among those with averted gazes more efficiently than they detect faces with averted gazes among those with direct gazes. We examined whether this “stare-in-the-crowd" effect occurs in chimpanzees (Pan troglodytes), whose eye morphology differs from that of humans (i.e., low-contrast eyes, dark sclera).

Click here to download the PDF Please refer to the terms of use before downloading.
Tomonaga M, Imura T (2010) Visual search for human gaze direction by a chimpanzee (Pan troglodytes). PLoS ONE 5(2): e9131 , doi: 10.1371/journal.pone.0009131