Chunk #14 — Methods — Bivariate and Univariate GxE Twin Models

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Gene-Environment Interaction Effects of Peer Deviance, Parental Knowledge and Stressful Life Events on Adolescent Alcohol Use.

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and the value of β indicates the magnitude of the moderation. Moderation effects were tested first on the shared paths to determine whether it was appropriate to use the extended univariate model. If the moderation on the shared paths was significant, then moderation effects were tested on the unique paths for A, C, and E consecutively using the bivariate moderation model.