Sexual orientation in a U.S. national sample of twin and nontwin sibling pairs.

@article{Kendler2000SexualOI,
  title={Sexual orientation in a U.S. national sample of twin and nontwin sibling pairs.},
  author={Kenneth S. Kendler and Laura M Thornton and Stephen E Gilman and Ronald C Kessler},
  journal={The American journal of psychiatry},
  year={2000},
  volume={157 11},
  pages={1843-6}
}
OBJECTIVE Although previous studies have suggested that sexual orientation is influenced by familial factors, which may be partly genetic, these studies have relied on unrepresentative and potentially biased samples. The authors attempted to estimate the role of genetic and environmental factors in the determination of sexual orientation in a more representative sample. METHOD Sexual orientation was assessed by a single item on a self-report questionnaire in a U.S. national sample of twin and… CONTINUE READING

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