Research Topics
| David A LeavensSummaryAffiliation: University of Sussex Country: UK Publications
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Detail Information
Publications
Referential communication by chimpanzees (Pan troglodytes)David A Leavens
Department of Psychology, University of Georgia, Atlanta, GA, USA
J Comp Psychol 118:48-57. 2004..The capacity for nonverbal reference may predate the Hominidae-Pongidae split, and the development of nonverbal reference may be independent of human species-specific adaptations for speech...
Intentionality as measured in the persistence and elaboration of communication by chimpanzees (Pan troglodytes)David A Leavens
Psychology Department, University of Sussex, Falmer, East Sussex, UK
Child Dev 76:291-306. 2005..Thus, their communication was about a specific item, demonstrating that both intentionality and nonverbal reference are capacities shared by humans with our nearest living relatives, the great apes...
Effects of cage mesh on pointing: hand shapes in chimpanzees (Pan troglodytes)David A Leavens
School of Psychology, University of Sussex, Falmer, East Sussex, UK
Anim Cogn 15:437-41. 2012..However, points of each hand shape were displayed at each location, demonstrating that these physical parameters do not fully account for the number of fingers extended while pointing by chimpanzees...
BIZARRE chimpanzees do not represent "the chimpanzee"David A Leavens
School of Psychology, University of Sussex, Falmer, East Sussex BN1 9QH, United Kingdom
Behav Brain Sci 33:100-1. 2010..Here we argue that rearing history is every bit as important for understanding cognition in other species as it is in humans...
Animal communication: laughter is the shortest distance between two apesDavid A Leavens
Department of Psychology, School of Life Sciences, University of Sussex, Falmer, East Sussex BN1 9QH, UK
Curr Biol 19:R511-3. 2009..New acoustic analyses of the calls of great apes and humans in response to tickling reveal the probable evolutionary history of laughter in humans and our nearest living relatives, the great apes...
Multimodal communication by captive chimpanzees (Pan troglodytes)David A Leavens
Department of Psychology, School of Life Sciences, University of Sussex, Falmer, East Sussex, BN1 9QH, UK
Anim Cogn 13:33-40. 2010..Thus, in the impoverished circumstances characteristic of captivity, complex signaling tactics are nevertheless exhibited by chimpanzees, suggesting continuity in intersubjective psychological processes in humans and apes...
Animal cognition: multimodal tactics of orangutan communicationDavid A Leavens
Department of Psychology, School of Life Sciences, University of Sussex, Falmer, East Sussex, UK
Curr Biol 17:R762-4. 2007..Orangutans select different tactics for repairing failed communication, depending upon how well they are understood: they repeat signals if they are partially understood and switch tactics entirely if completely misunderstood...
Target animacy influences chimpanzee handednessGillian S Forrester
Department of Psychology, University of Westminster, London, UK
Anim Cogn 15:1121-7. 2012..We further speculate that a population-level right-hand bias is not a human-unique characteristic, but one that was inherited from a common human-ape ancestor...
Lateralized scratching in chimpanzees (Pan troglodytes): Evidence of a functional asymmetry during arousalWilliam D Hopkins
Division of Psychobiology, Yerkes National Primate Research Center, Atlanta, GA 30322, USA
Emotion 6:553-9. 2006..For scratching, the chimpanzees showed no hand preference but a significant bias for scratching on the left side of the body. These results support the view that the right hemisphere regulates the autonomic nervous system during arousal...
Understanding of visual attention by adult humans (Homo sapiens): a partial replication of Povinelli, Bierschwale, and Cech (1999)Emily Thomas
Department of Psychology, School of Life Sciences, University of Sussex, Falmer, East Sussex, UK
J Comp Psychol 122:428-36. 2008..These findings, together with the high performance of participants in an incongruent condition, in which the experimenter pointed to or gazed at an unbaited container, challenge the validity of their experimental design...
Target animacy influences gorilla handednessGillian S Forrester
Department of Psychology, University of Westminster, 309 Regent Street, London W1B 2UW, UK
Anim Cogn 14:903-7. 2011....
