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The effects of linear perspective on relative size discrimination in chimpanzees (Pan troglodytes) and humans (Homo sapiens)

Authors
Journal
Behavioural Processes
0376-6357
Publisher
Elsevier
Publication Date
Volume
77
Issue
3
Identifiers
DOI: 10.1016/j.beproc.2007.07.006
Keywords
  • Chimpanzees
  • Corridor Illusion
  • Linear Perspective
  • Pictorial Depth
  • Size Judgment

Abstract

Abstract In this study, we tested the corridor illusion in three chimpanzees and five humans, applying a relative size discrimination task to assess pictorial depth perception using linear perspective. The subjects were required to choose the physically larger cylinder of two on a background containing drawn linear perspective cues. We manipulated both background and cylinder size in each trial. Our findings suggest that chimpanzees, like humans, exhibit the corridor illusion.

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