• Publications
  • Influence
Hand preferences for a coordinated bimanual task in 110 chimpanzees (Pan troglodytes): cross-sectional analysis.
  • W. Hopkins
  • Psychology, Medicine
  • Journal of comparative psychology
  • 1 September 1995
Hand preference for a coordinated bimanual task was assessed in a sample of 110 chimpanzees (Pan troglodytes). Subjects were presented with opaque tubes, the inside of which was coated with peanutExpand
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Intentionality as measured in the persistence and elaboration of communication by chimpanzees (Pan troglodytes).
In human infancy, 2 criteria for intentional communication are (a) persistence in and (b) elaboration of communication when initial attempts to communicate fail. Twenty-nine chimpanzees (PanExpand
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Hand preferences for coordinated bimanual actions in 777 great apes: implications for the evolution of handedness in hominins.
Whether or not nonhuman primates exhibit population-level handedness remains a topic of considerable scientific debate. Here, we examined handedness for coordinated bimanual actions in a sample ofExpand
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On the Other Hand: Statistical Issues in the Assessment and Interpretation of Hand Preference Data in Nonhuman Primates
  • W. Hopkins
  • Psychology
  • International Journal of Primatology
  • 2004
I describe methodological and statistical issues in the assessment of hand preference in nonhuman primates and discuss them in the context of a recent paper by McGrew and Marchant (1997) in whichExpand
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Comparative and familial analysis of handedness in great apes.
  • W. Hopkins
  • Psychology, Medicine
  • Psychological bulletin
  • 1 July 2006
Historically, population-level handedness has been considered a hallmark of human evolution. Whether nonhuman primates exhibit population-level handedness remains a topic of considerable debate. ThisExpand
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Recognizing facial cues: individual discrimination by chimpanzees (Pan troglodytes) and rhesus monkeys (Macaca mulatta).
Faces are one of the most salient classes of stimuli involved in social communication. Three experiments compared face-recognition abilities in chimpanzees (Pan troglodytes) and rhesus monkeysExpand
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Understanding the Point of Chimpanzee Pointing
Pointing has long been considered to be a uniquely human, universal, and biologically based gesture. However, pointing emerges spontaneously, without explicit training, in captive chimpanzees.Expand
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Asymmetric Broca's area in great apes
Brodmann's area 44 delineates part of Broca's area within the inferior frontal gyrus of the human brain and is a critical region for speech production, being larger in the left hemisphere than in theExpand
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The Distribution and Development of Handedness for Manual Gestures in Captive Chimpanzees (Pan troglodytes)
This article describes the distribution and development of handedness for manual gestures in captive chimpanzees. Data on handedness for unimanual gestures were collected in a sample of 227 captiveExpand
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Why primate models matter
Research involving nonhuman primates (NHPs) has played a vital role in many of the medical and scientific advances of the past century. NHPs are used because of their similarity to humans inExpand
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