Consistent etiology of severe, frequent psychotic experiences and milder, less frequent manifestations: a twin study of specific psychotic experiences in adolescence.

ABSTRACT:

Importance

The onset of psychosis is usually preceded by psychotic experiences (PE). Little is known about the etiology of PE and whether the degree of genetic and environmental influences varies across different levels of severity. A recognized challenge is to identify individuals at high risk of developing psychotic disorders prior to disease onset.

Objectives

To investigate the degree of genetic and environmental influences on specific PE, assessed dimensionally, in adolescents in the community and in those who have many, frequent experiences (defined using quantitative cutoffs). We also assessed the degree of overlap in etiological influences between specific PE.

Design, setting, and participants

Structural equation model-fitting, including univariate and bivariat

SUBMITTER: Zavos HM 

PROVIDER: S-EPMC4156464 | biostudies-literature | 2014 Sep

REPOSITORIES: biostudies-literature