Genetic and environmental influences on semantic verbal fluency across midlife and later life

Background Despite the relevance of semantic fluency measures to risk for dementia and psychiatric disorders, little is known about their genetic and environmental architecture in mid‐to‐late life. Existing studies in community samples of middle‐aged or older adults have yielded a wide range of heritability estimates for semantic fluency (20% to 77%). Some inconsistency may be due to measures available, but genetic variance on semantic fluency...