Document Detail

Multiple measures of hand-use lateralization in the ring-tailed lemur (Lemur catta).
MedLine Citation:
PMID:  2776422     Owner:  NLM     Status:  MEDLINE    
Evaluated a free-ranging matriline of 13 ring-tailed lemurs (Lemur catta) from videotaped records for lateralized hand use with 2 tasks and 4 measures: food reaching, feeding posture, duration of food holding, and manipulation of food between mouth and hand while eating. Binomial z scores determined 7 lemurs to be left preferent in reaching, 3 right, and 3 ambipreferent. Ideographic analyses suggested possible sex-linked and early experience twin effects. When compared to right and ambipreferent lemurs, left reach preferent lemurs used the left hand more but bimanuals grasped less in food holding and also engaged in less hand-mouth food manipulation. The tendency to manipulate food was not correlated with bimanual holding but was inversely related to left hand holding and directly related to right hand holding. These patterns are discussed as possible precursors of human bimanual manipulation.
G W Milliken; C Forsythe; J P Ward
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of comparative psychology (Washington, D.C. : 1983)     Volume:  103     ISSN:  0735-7036     ISO Abbreviation:  J Comp Psychol     Publication Date:  1989 Sep 
Date Detail:
Created Date:  1989-10-18     Completed Date:  1989-10-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8309850     Medline TA:  J Comp Psychol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  262-8     Citation Subset:  IM    
Department of Psychology, Memphis State University, Tennessee 38152.
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MeSH Terms
Feeding Behavior
Functional Laterality*
Psychomotor Performance
Sex Factors
Twins / psychology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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