monkey toy preferences parallel those of children Janice M. Hassett a,b,c, Erin R. Siebert b, Kim Wallen a,b,c,⁎ a b c Department of Psychology, Emory University, Atlanta, GA 30322, USA Yerkes National Primate Research Center, Atlanta, GA 30322, USA Center for Behavioral Neuroscience, Atlanta, GA, 30322, USA a r t i c l e i n f o Article history: Received 10 January 2008 Revised 14 March 2008 Accepted 14 March 2008 Available online 25 March 2008 Keywords: Sex differences Toy preference Gender Hormones…
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