Abstract
In attempting to resolve the issue of the relative importance of environmental and genetic factors in mental illness migration studies have been inconclusive (Dohrenwend and Dohrenwend, 1969). Among West Indian immigrants an increased incidence of mental disorder as compared to the native population and the population at home has been suggested (Hemsi, 1967). Other workers have attached great importance to environmental factors in explaining the atypical picture of West Indian mental illness (Gordon, 1965; Tewfik and Okasha, 1965).

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