Psychometric properties and validity of the Dutch Inventory of Personality Organization (IPO-NL).
This study investigated the psychometric qualities and validity of a Dutch translation of the Inventory of Personality Organization (IPO-NL) in a heterogeneous sample of 371 psychiatric patients and a sample of 181 normal controls. Results show good internal consistency and test-retest reliability. Exploratory factor analyses did not replicate its proposed five-factor structure, but suggested a four-factor structure instead. The IPO-NL appeared to have good concurrent validity across populations, and good convergent validity in terms of associations with measures of psychological distress and personality pathology severity. Taken together, the IPO-NL appears to be a useful instrument for evaluating general personality pathology for clinical practice. Future studies may further articulate its proposed subscales.
Symfora groep Psychiatric Center, Amersfoort, The Netherlands. jg.berghuis@symforagroep.nl
Han
H
Berghuis
Jan H
JH
Kamphuis
Gerard
G
Boedijn
Roel
R
Verheul
D000293:Adolescent; D000328:Adult; D000368:Aged; D003674:Defense Mechanisms; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis* / Q000523:psychology; D008875:Middle Aged; D018187:Personal Construct Theory; D010554:Personality Disorders / Q000175:diagnosis* / Q000523:psychology; D010555:Personality Inventory / Q000706:statistics & numerical data*; D011594:Psychometrics / Q000706:statistics & numerical data; D011936:Reality Testing; D012016:Reference Values; D015203:Reproducibility of Results; D012649:Self Concept; D055815:Young Adult