Different Responses to Reward Comparisons by Three Primate Species

• Hani D. Freeman ,

  * E-mail: hani.freeman@gmail.com

  Affiliations Language Research Center, Georgia State University, Atlanta, Georgia, United States of America, Lester E. Fisher Center for the Study and Conservation of Apes, Lincoln Park Zoo, Chicago, Illinois, United States of America

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• Jennifer Sullivan,

  Affiliation Wisconsin National Primate Research Center, University of Wisconsin, Madison, Wisconsin, United States of America

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• Lydia M. Hopper,

  Affiliations Language Research Center, Georgia State University, Atlanta, Georgia, United States of America, Lester E. Fisher Center for the Study and Conservation of Apes, Lincoln Park Zoo, Chicago, Illinois, United States of America, Michale E. Keeling Center for Comparative Medicine and Research, UT MD Anderson Cancer Center, Bastrop, Texas, United States of America

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• Catherine F. Talbot,

  Affiliation Language Research Center, Georgia State University, Atlanta, Georgia, United States of America

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• Andrea N. Holmes,

  Affiliation Michale E. Keeling Center for Comparative Medicine and Research, UT MD Anderson Cancer Center, Bastrop, Texas, United States of America

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• Nancy Schultz-Darken,

  Affiliation Wisconsin National Primate Research Center, University of Wisconsin, Madison, Wisconsin, United States of America

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• Lawrence E. Williams,

  Affiliation Michale E. Keeling Center for Comparative Medicine and Research, UT MD Anderson Cancer Center, Bastrop, Texas, United States of America

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• Sarah F. Brosnan

  Affiliations Language Research Center, Georgia State University, Atlanta, Georgia, United States of America, Michale E. Keeling Center for Comparative Medicine and Research, UT MD Anderson Cancer Center, Bastrop, Texas, United States of America, Department of Psychology, Philosophy & Neuroscience Institute, Georgia State University, Atlanta, Georgia, United States of America

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