Preference for human direct gaze in infant chimpanzees (Pan troglodytes).

  title={Preference for human direct gaze in infant chimpanzees (Pan troglodytes).},
  author={Masako Myowa-Yamakoshi and Masaki Tomonaga and Masayuki Tanaka and Tetsuro Matsuzawa},
  volume={89 2},
We studied gaze perception in three infant chimpanzees (Pan troglodytes), aged 10-32 weeks, using a two-choice preferential-looking paradigm. The infants were presented with two photographs of a human face: (a) with the eyes open or closed, and (b) with a direct or an averted gaze. We found that the chimpanzees preferred looking at the direct-gaze face. However, in the context of scrambled faces, the infants showed no difference in gaze discrimination between direct and averted gazes. These… CONTINUE READING

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