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Deconstructing the familiality of the emotive component of psychotic experiences in the general population
Author(s) -
Jacobs N.,
MyinGermeys I.,
Derom C.,
Vlietinck R.,
Os J.
Publication year - 2005
Publication title -
acta psychiatrica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.849
H-Index - 146
eISSN - 1600-0447
pISSN - 0001-690X
DOI - 10.1111/j.1600-0447.2005.00588.x
Subject(s) - emotive , component (thermodynamics) , psychology , population , psychotherapist , clinical psychology , psychiatry , medicine , developmental psychology , epistemology , philosophy , environmental health , physics , thermodynamics
Objective: Genetic and environmental influences on variation in distress associated with subclinical psychotic experiences were examined. Method: A total of 289 twin pairs filled in the Community Assessment of Psychic Experiences, a self‐report instrument assessing subclinical positive and negative psychotic experiences and associated distress (distress pos and distress neg ). Using structural equation modelling, univariate and bivariate models were fitted. Results: Univariate model fitting showed genetic and non‐shared environmental influences on both distress pos and distress neg . Bivariate model fitting showed that 52% of the correlation between the two phenotypes ( r = 0.46) was because of shared genes and that non‐shared environmental factors accounted for 48% of the correlation. Conclusion: Liability to psychosis not only refers to the development of psychosis per se , but also to the liability to develop dysfunctional emotional appraisals. The emotive component of psychosis liability involves genetic transmission of a general, non‐symptom‐specific distress factor that may be a target for molecular genetic research.