Hostname: page-component-89b8bd64d-z2ts4 Total loading time: 0 Render date: 2026-05-09T22:35:57.972Z Has data issue: false hasContentIssue false

The structure of common and uncommon mental disorders

Published online by Cambridge University Press:  21 May 2012

K. T. Forbush*
Affiliation:
Purdue University, West Lafayette, IN, USA
D. Watson
Affiliation:
University of Notre Dame, South Bend, IN, USA
*
*Address for correspondence: K. T. Forbush, Ph.D., Purdue University, Department of Psychological Sciences, 703 Third Street, West Lafayette, IN 47907, USA. (Email: kforbush@purdue.edu)

Abstract

Background

Co-morbidity patterns in epidemiological studies of mental illness consistently demonstrate that a latent internalizing factor accounts for co-morbidity patterns among unipolar mood and anxiety disorders, whereas a latent externalizing factor underlies the covariation of substance-use disorders and antisocial behaviors. However, this structure needs to be extended to include a broader range of disorders.

Method

Exploratory and confirmatory factor analyses were used to examine the structure of co-morbidity using data from the Collaborative Psychiatric Epidemiological Surveys (n = 16 233).

Results

In the best-fitting model, eating and bipolar disorders formed subfactors within internalizing, impulse control disorders were indicators of externalizing, and factor-analytically derived personality disorder scales split between internalizing and externalizing.

Conclusions

This was the first large-scale nationally representative study that has included uncommon mental disorders with sufficient power to examine their fit within a structural model of psychopathology. The results of this study have important implications for conceptualizing myriad mental disorders.

Information

Type
Original Articles
Copyright
Copyright © Cambridge University Press 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable