Article
Hereditary Influences on Cognitive Functioning in Older Men
1 Jun 1993
Abstract excerpt
OBJECTIVE: To determine the contribution of genetic factors to cognitive functioning in older men. DESIGN: Cognitive testing by telephone interview in an epidemiologically defined population. PARTICIPANTS: 2077 monozygotic and 2225 dizygotic male twin pairs, all between the ages of 62 and 73 years, recruited from the National Academy of Sciences twin registry. MAIN OUTCOME MEASURES: The Telephone Interview for...
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