William D. Hopkins
List of John Benjamins publications for which William D. Hopkins plays a role.
2012 Handedness for manual gestures in great apes: A meta-analysis Developments in Primate Gesture Research, Pika, Simone and Katja Liebal (eds.), pp. 93–112 | Article
Left hemisphere dominance for language and speech is a prominent feature of the human brain. Some have suggested that left hemisphere lateralization for language in modern humans evolved from an existing lateralized system for gestural communication in the common ancestor of humans and apes. Here,… read more
2011 Do chimpanzees have voluntary control of their facial expressions and vocalizations? Primate Communication and Human Language: Vocalisation, gestures, imitation and deixis in humans and non-humans, Vilain, Anne, Jean-Luc Schwartz, Christian Abry and Jacques Vauclair (eds.), pp. 71–88 | Article
It has been argued that only humans have volitional control of their vocalizations and that this ability allowed for the evolution of speech. Here we argue that recent studies in chimpanzees suggest that they do, in fact have some degree of voluntary control of both their vocalizations as well as… read more
2008 9. The heterochronic origins of explicit reference The Shared Mind: Perspectives on intersubjectivity, Zlatev, Jordan, Timothy P. Racine, Chris Sinha and Esa Itkonen (eds.), pp. 187–214 | Article
Explicit reference is the communicative capacity to intentionally pick out a specific object in the environment and make that object a manifest topic for shared attention. Pointing is the quintessential example of non-verbal, explicit reference. Chimpanzees, and other apes in captivity,… read more
2007 Multimodal concomitants of manual gesture by chimpanzees (Pan troglodytes): Influence of food size and distance Gestural Communication in Nonhuman and Human Primates, Liebal, Katja, Cornelia Müller and Simone Pika (eds.), pp. 67–80 | Article
It is well-established that chimpanzees vocalize more in the presence of relatively large amounts of food. The present study administered four trials in random order to each of 20 chimpanzees: (1) small piece of fruit, placed near to cage (~30 cm.), (2) large piece of fruit, placed near to cage,… read more
2005 Multimodal concomitants of manual gesture by chimpanzees (Pan troglodytes): Influence of food size and distance Gestural Communication in Nonhuman and Human Primates, Liebal, Katja, Cornelia Müller and Simone Pika (eds.), pp. 75–90 | Article
It is well-established that chimpanzees vocalize more in the presence of relatively large amounts of food. The present study administered four trials in random order to each of 20 chimpanzees: (1) small piece of fruit, placed near to cage (~30 cm.), (2) large piece of fruit, placed near to cage,… read more
1998 The Perception of Facial Expressions By Chimpanzees, Pan Troglodytes Evolution of Communication 2:1, pp. 1–23 | Article
The production of facial expressions is important for social communication, and has been described for many primate species. The perception of facial expressions, however, has received considerably less attention. This study reports the results of two experiments that investigated the ability of… read more