Left-Handedness and Longevity in Primates

Autor:	I D Lussier, G C Westergaard
Rok vydání:	1999
Předmět:	Male media_common.quotation_subject Longevity Population Left handedness Functional Laterality Developmental psychology biology.animal Animals Primate education media_common Analysis of Variance education.field_of_study biology General Neuroscience Age Factors General Medicine biology.organism_classification Biological Evolution Macaca mulatta Rhesus macaque Laterality Trait Female Analysis of variance Psychomotor Performance Demography
Zdroj:	International Journal of Neuroscience. 99:79-87
ISSN:	1543-5245 0020-7454
DOI:	10.3109/00207459908994315
Popis:	In the present research we used the rhesus macaque to model the decline in the incidence of left-handedness that has been noted in the aged human population. We found a significant group-level bias towards use of the left hand among young-adult macaques, and a significant group-level bias towards use of the right hand among aged macaques. The distribution of hand preference across age classes cannot be explained through simple elimination of left-handed subjects in the aged population. Rather, our data are consistent with a maturational view positing increased use of the right hand with increased age. Similar findings across phylogenetically diverse primate taxa suggest that this phenomenon is an evolutionarily ancient trait. Greater use of the left hand in male versus female macaques indicates that sex differences in hand preference are also deeply rooted in our primate origins.
Databáze:	OpenAIRE
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