Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
J Abnorm Psychol. 2012 May;121(2):396-406. doi: 10.1037/a0026787. Epub 2012 Jan 30.

The nature of schizotypy among multigenerational multiplex schizophrenia families.

Author information

  • 1Department of Psychology, University of Pittsburgh, Pittsburgh, PA 15260, USA.

Abstract

Identification of endophenotypes (Gottesman & Gould, 2003; Gottesman & Shields, 1972) that genetically correlate with schizophrenia and are genetically homogeneous is an important strategy for detecting genes that affect schizophrenia risk. Symptoms of schizotypy may familially correlate with schizophrenia; however, there are critical limitations of the current literature concerning this association. The present study examined the genetic architecture and genetic associations between schizotypy and schizophrenia among multigenerational, multiplex schizophrenia families. Genetic schizotypy factor scales were developed that genetically correlated with schizophrenia, although some relations were unexpected in direction suggesting minimization of "psychotic-like" symptoms. These genetic schizotypy factor scales did not genetically correlate with major depressive disorder or substance dependence indicating specificity to schizophrenia. The results highlight the possibility of significant response bias in schizophrenia families, particularly among close relatives, and suggest an important consideration when acquiring self-report information. This is a topic that deserves future study as the origins of this putative bias in relatives are unclear. In addition, the results support the identification of genetic schizotypy factors as a promising technique for maximizing genetic correlation of endophenotypes with schizophrenia.

PMID:
22288909
[PubMed - indexed for MEDLINE]
PMCID:
PMC3392016
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for American Psychological Association Icon for PubMed Central
    Loading ...
    Write to the Help Desk