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Published Online:https://doi.org/10.1026/0012-1924/a000076

In diesem Artikel wird eine deutschsprachige Kurzskala des Inventars der Persönlichkeitsorganisation (IPO-16) vorgestellt und in drei klinischen Stichproben mit insgesamt 1300 Personen validiert. Das IPO ist ein international verbreitetes Selbsteinschätzungsinstrument, das in mehreren Versionen vorliegt und zur Erfassung von struktureller Beeinträchtigung in den Bereichen Identität, Abwehr und Realitätsprüfung eingesetzt wird. Die Kurzskala basiert auf 16 versionsübergreifenden IPO-Items und misst den Schweregrad der strukturellen Beeinträchtigung. In den Studien konnte gezeigt werden, dass das IPO-16 (1) intern konsistent ist, (2) eine modellkonforme Faktorenstruktur hat, (3) eine sehr hohe Überlappung zur IPO-Vollversion aufweist, (4) in der Selbsteinschätzung über konvergente und diskriminante Validität verfügt, (5) den Schweregrad der Persönlichkeitsstörung aus Expertensicht unabhängig vom aktuellen Leidensdruck vorhersagt und (6) eine diagnostische Effizienz erreicht, die mit anderen Screening-Instrumenten im Bereich der Persönlichkeitsstörungsdiagnostik vergleichbar ist. Mit dem IPO-16 liegt für den deutschsprachigen Raum erstmals ein ökonomisches und gut validiertes Selbsteinschätzungsinstrument zur Erfassung von struktureller Beeinträchtigung vor.


Validity of a German 16-item version of the Inventory of Personality Organization (IPO-16)

This paper introduces a German short form of the Inventory of Personality Organization (IPO-16). The IPO long form is a self-report instrument for the assessment of personality dysfunction in the domains of identity, defense, and reality testing. The IPO-16 measures general personality dysfunction and is based on 16 items representing the common denominator of several IPO versions currently available in German. Based on the data of 1,300 participants, it is shown that IPO-16 (1) is internally consistent, (2) has an acceptable CFA model-fit, (3) has a high overlap with the IPO long from, (4) shows good convergent and discriminant validity with regard to self-reports, (5) predicts expert ratings of personality pathology over and above general distress, and (6) reaches a diagnostic efficiency comparable to other screening instruments in the field of personality pathology. In sum, the IPO-16 is an economic and valid self-report instrument for the assessment of general personality dysfunction.

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