Genetic and environmental influences on schizotypy: a community-based twin study
Abstract
This study investigated the factor structure and etiology of four self-report schizotypy questionnaires during young adulthood (age 18-27) in 98 monozygotic and 59 same-sex dizygotic twin pairs from the community. A single phenotypic factor was identified that was primarily associated with Perceptual Aberration, Magical Ideation, and the Rust Inventory of Schizotypal Cognitions scales, and less so with Social Anhedonia. Univariate etiologic models suggested that in addition to nonshared environmental influences, Perceptual Aberration and Social Anhedonia were significantly influenced by either genes or shared family environment, whereas Magical Ideation and the Rust Inventory were influenced by shared family environment, but not genes. Multivariate twin analyses detected a common schizotypy factor, primarily defined by Perceptual Aberration, Magical Ideation, and the Rust Inventory scales, that was influenced by genes or shared environment as well as nonshared environment. Contrary to expectations, these results suggest that, at least in community-based samples, these "positive" schizotypy questionnaires are not strongly genetically influenced.
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Multivariate studies from the general population indicate that social anhedonia is genetically conferred.
“Certainly, multivariate studies from the general population have pointed to social anhedonia being genetically conferred (153, 154).”
From A transdiagnostic perspective on social anhedonia (2019) · cites this paper as [154]
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- Authors
- MacDonald, A. W., Pogue-Geile, M. F., Debski, T. T., & Manuck, S.
- Affiliations
- University of Pittsburgh (US)
- Venue
- Schizophrenia Bulletin
- Publisher
- Oxford University Press (OUP)
- Published
- 2001-01-01
- Volume
- 27
- Issue
- 1
- Pages
- 47-58
- ISSN
- 0586-7614 (ISSN-L)
- 1745-1701
- OpenAlex
- W2160172610
- Cited by
- 75
- References
- 33
- Citations by year
- 2024: 1 · 2023: 1 · 2021: 2 · 2020: 2 · 2019: 2 · 2018: 2 · 2017: 3 · 2016: 2 · 2015: 2 · 2014: 8 · 2013: 3 · 2012: 6
- FWCI
- 2.13
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Schizophrenia Bulletin (publishedVersion)
- PubMed (publishedVersion)
- Funders
- U.S. Public Health Service (40962)
- National Heart, Lung, and Blood Institute
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
- Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
- Keywords
- schizotypy, genetic factors
- MeSH terms
- Adolescent, Adult, Environment, Family Relations, Female, Humans, Male, Psychiatric Status Rating Scales, Surveys and Questionnaires, Risk Factors, Schizophrenia, Schizotypal Personality Disorder, Social Behavior, Twins, Dizygotic, Twins, Monozygotic
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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