Life-span age trends in laterality

Clare Kathleen Porac, S. Coren, P. Duncan

Research output: Contribution to journalArticlepeer-review

130 Scopus citations


Laterality of hand, foot, eye, and ear was measured in a sample of 1964 subjects, ranging in age from 8 to 100 years. Age trends were found, with hand, foot, and eye preference becoming more right-sided and ear preference becoming more left-sided with increasing age. Sex differences emerged in foot, eye, and ear preference but these did not systematically interact with the age variable. Several causal mechanisms are proposed but none can fully explain either the direction or the magnitude of the observed age changes. Thus, these data are most consistent with the view that the study of sidedness in humans should proceed with a consideration of a complex of underlying factors and individual difference variables.

Original languageEnglish (US)
Pages (from-to)715-721
Number of pages7
JournalJournals of Gerontology
Issue number5
StatePublished - Jan 1 1980

All Science Journal Classification (ASJC) codes

  • Aging


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