Parental Similarity Linked to Psychiatric Disorders

JAMA Network

About the Study: These findings suggest that partner similarity for psychiatric disorders is substantial and includes both within- and cross-disorder patterns, suggesting assortative mating alongside other mechanisms that may generate similarity between coparents. Regardless of its underlying mechanisms, this structure contributes meaningfully to observed family-based heritability and prevalence and leads to clustering of familial disease risk with important societal and public health implications.

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