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HERITABILITY OF SCHIZOTYPAL TRAITS DURING ADOLESCENCE
by
Marissa Ericson
A Thesis Presented to the
FACULTY OF THE GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
MASTER OF ARTS
(PSYCHOLOGY)
December 2008
Copyright 2008 Marissa Leigh Ericson
Object Description
| Title | Heritability of schizotypal traits during adolescence |
| Author | Ericson, Marissa |
| Author email | marissae@usc.edu; mle9@cornell.edu |
| Degree | Master of Arts |
| Document type | Thesis |
| Degree program | Psychology |
| School | College of Letters, Arts and Sciences |
| Date defended/completed | 2008-09-10 |
| Date submitted | 2008 |
| Restricted until | Unrestricted |
| Date published | 2008-12-01 |
| Advisor (committee chair) | Baker, Laura |
| Advisor (committee member) |
Prescott, Carol Mednick, Sarnoff |
| Abstract | The study described in the present paper attempted to clarify further the genetic and environmental etiology of schizotypal personality traits through biometric model fitting of data from a sample of MZ (n=91 twin pairs) and DZ (n=87 twin pairs) adolescent twins (age 11-13 years old) drawn from the general population. Univariate genetic analyses found that schizotypal traits are modestly heritable (additive genetic effects ranging from 35 to 49%). Multivariate genetic model fitting results indicated that additive genetic and unique environmental influences acted through a single common latent pathway for cognitive-perceptual, interpersonal-affective and disorganization symptom dimensions of schizotypal personality. The covariation among the three schizotypy sub-factors could be accounted for by a common 'schizotypy' latent factor which was significantly heritable, with additive genetic factors explaining 60% of the latent factor variance. |
| Keyword | schizotypy; schizotypal personality; schizophrenia; genetics; heritability |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m1850 |
| Rights | Ericson, Marissa |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Ericson-2469 |
| Archival file | uscthesesreloadpub_Volume29/etd-Ericson-2469.pdf |
Description
| Title | Page 1 |
| Full text | HERITABILITY OF SCHIZOTYPAL TRAITS DURING ADOLESCENCE by Marissa Ericson A Thesis Presented to the FACULTY OF THE GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree MASTER OF ARTS (PSYCHOLOGY) December 2008 Copyright 2008 Marissa Leigh Ericson |
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