The ability to engage in visual co-orientation (VCO) is suggested by naturalistic observations of primates, but experimental comparisons of different species are lacking. This study compared the propensity of lemurs (Eulemur macaco) and macaques (Macaca arctoides) to engage in VCO, defined as turning to look in the same direction as another individual whose focus of attention changes. The macaques consistently showed VCO whereas the lemurs showed no such response. This species difference has implications for understanding the evolutionary origins of more advanced abilities that build upon VCO, such as shared visual attention and theory of mind.
James R. Anderson
Department of Psychology, University of Stirling
Stirling FK9 4LA (UK)
Tel. +44 1786 46 76 37, Fax +44 1786 46 76 41
Received: Received: February 24, 1997
Accepted after revision: August 29, 1997
Number of Print Pages : 6
Number of Figures : 0, Number of Tables : 1, Number of References : 19
Folia Primatologica (International Journal of Primatology)
Founded in 1963 by J. Biegert, H. Hofer, A.H. Schultz and D. Starck; Continued 1975 by J. Biegert (1975–1986), R.D. Martin (1987–1994)
Official Journal of the European Federation for Primatology
Vol. 70, No. 1, Year 1999 (Cover Date: January-February 1999)
Journal Editor: R.H. Crompton, Liverpool
ISSN: 0015–5713 (print), 1421–9980 (Online)
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Article / Publication Details
Published online: 2/26/1999
Issue release date: January–February 1999
Number of Print Pages: 6
Number of Figures: 0
Number of Tables: 1
ISSN: 0015-5713 (Print)
eISSN: 1421-9980 (Online)
For additional information: http://www.karger.com/FPR
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