Journal
JOURNAL OF COMPARATIVE PSYCHOLOGY
Volume 117, Issue 1, Pages 67-75Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0735-7036.117.1.67
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The ability of Tonkean macaques (Macaca tonkeana) to deceive partners about the location of hidden food was investigated in 4 males belonging to a group raised in a 2-acre park. Before releasing subjects in the search task, the experimenter prompted 1 of the subjects to observe where the bait was hidden. The authors found that when informed, higher ranking subjects did not significantly alter their search patterns whether tested alone. or in pairs. The same held for subordinates belonging to pairs with weak dominance. To the contrary, strongly dominated subordinates modified the number of pauses when searching in pairs. They used behavioral tactics such as avoiding being followed, stopping when being watched, or taking a wrong direction. Information withholding might be a common event in macaques.
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