Article

Twin Analyses Without Zygosity Information: The Promise and Pitfalls of the Normal Finite-Mixture-Distribution Twin Model

2026-06-25

Abstract excerpt

<p>Twin designs offer a powerful framework for disentangling genetic and environmental sources of individual differences, but require zygosity information that is often unavailable. When zygosity is unknown, analyses may still be possible using a normal finite-mixture-distribution model. This model assumes that the bivariate twin phenotype is normally distributed within each zygosity group, an assumption that cann...

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Literature Corpus work: d5eaa6d7-118f-552d-9505-14fa98ad8827
DOI: 10.31234/osf.io/rkxgp_v1

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