Interpersonal problems across anxiety, depression, and eating disorders: a transdiagnostic examination.
OBJECTIVE
Integrative models of psychopathology suggest that quality of interpersonal relationships is a key determinant of psychological well-being. However, there is a relative paucity of research evaluating the association between interpersonal problems and psychopathology within cognitive behavioural therapy. Partly, this may be due to lack of brief, well-validated, and easily interpretable measures of interpersonal problems that can be used within clinical settings. The aim of the present study was to evaluate the psychometric properties, factor invariance, and external validity of the Inventory of Interpersonal Problems 32 (IIP-32) across anxiety, depression, and eating disorders.


METHODS
Two treatment-seeking samples with principal anxiety and depressive disorders (AD sample, n = 504) and eating disorders (ED sample, n = 339) completed the IIP-32 along with measures of anxiety, depression, and eating disorder symptoms, as well as quality of life (QoL).


RESULTS
The previously established eight-factor structure of the IIP-32 provided the best fit for both the AD and ED groups, and was robustly invariant across the two samples. The IIP-32 also demonstrated excellent external validity against well-validated measures of anxiety, depression, and eating disorder symptoms, as well as QoL.


CONCLUSIONS
The IIP-32 provides a clinically useful measure of interpersonal problems across emotional and ED.
Centre for Clinical Interventions, Perth, Australia; School of Psychology, University of Western Australia, Perth, Australia.
Peter M
PM
McEvoy
Melissa M
MM
Burgess
Andrew C
AC
Page
Paula
P
Nathan
Anthea
A
Fursland
D000293:Adolescent; D000328:Adult; D000368:Aged; D001007:Anxiety / Q000523:psychology*; D001008:Anxiety Disorders / Q000175:diagnosis / Q000523:psychology*; D003863:Depression / Q000175:diagnosis / Q000523:psychology*; D003866:Depressive Disorder / Q000175:diagnosis / Q000523:psychology*; D005163:Factor Analysis, Statistical; D001068:Feeding and Eating Disorders / Q000175:diagnosis / Q000523:psychology*; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D010549:Personal Satisfaction; D010551:Personality; D011237:Predictive Value of Tests; D011569:Psychiatric Status Rating Scales; D011599:Psychopathology; D011788:Quality of Life; D011795:Surveys and Questionnaires