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Article

Parental treatment and the equal environment assumption in twin studies of psychiatric illness.

Psychological medicine - 1 Aug 1994

Kendler K S, Neale M C, Kessler R C, Heath A C, Eaves L J

Abstract excerpt

The validity of the twin method depends on the equal environment assumption (EEA)--that monozygotic (MZ) and dizygotic (DZ) twins are equally correlated in their exposure to environmental factors of aetiological importance for the trait under study. Parents may treat MZ twins more similarly than DZ twins thereby potentially violating the EEA. We tested this hypothesis for four common psychiatric disorders (major...

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Identifiers

PMID: 7991740
DOI: 10.1017/s0033291700027732

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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