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Baboons' hand preference resists to spatial factors for a communicative gesture but not for a simple manipulative action
Author(s) -
Bourjade Marie,
Meunier Hélène,
BloisHeulin Catherine,
Vauclair Jacques
Publication year - 2013
Publication title -
developmental psychobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.055
H-Index - 93
eISSN - 1098-2302
pISSN - 0012-1630
DOI - 10.1002/dev.21128
Subject(s) - gesture , preference , psychology , hand preference , consistency (knowledge bases) , cognitive psychology , set (abstract data type) , action (physics) , variation (astronomy) , communication , developmental psychology , laterality , computer science , artificial intelligence , mathematics , statistics , physics , quantum mechanics , astrophysics , programming language
Olive baboons ( Papio anubis ) do acquire and use intentional requesting gestures in experimental contexts. Individual's hand preference for these gestures is consistent with that observed for typical communicative gestures, but not for manipulative actions. Here, we examine whether the strength of hand preference may also be a good marker of hemispheric specialization for communicative gestures, hence differing from the strength of hand preference for manipulative actions. We compared the consistency of individuals' hand preference with regard to the variation in space of either (i) a communicative partner or (ii) a food item to grasp using a controlled set‐up. We report more consistent hand preference for communicative gestures than for grasping actions. Established hand preference in the midline was stronger for gesturing than for grasping and allowed to predict the consistency of hand preference across positions. We found no significant relation between the direction of hand preference and the task. © 2013 Wiley Periodicals, Inc . Dev Psychobiol 55: 651–661, 2013.