[Validation of the Inventory for Interpersonal Problems (IIP). Results of a representative study in East and West...

The Inventory of Interpersonal Problems (IIP) was developed in the USA in the late 1970s and in the mean time has become a well-established instrument applied in numerous clinical studies in German speaking countries under the name "Inventar zur Erfassung interpersonaler Probleme". The test manual was published in German in 1994, but without the corresponding standardisation for a German-speaking population. The present study fills this gap. In a representative study the IIP was completed by 2025 West Germans and 1022 East Germans aged 14-92 years. The representative norms are given and the psychometric dimensions of the questionnaire adjusted for this sample. As a contribution to testing validity the results were also related to the scores of a number of other tests completed by the same sample (Giessen Test--GT; Giessener Beschwerdebogen--GBB; Fragebogen zur Lebenszufriedenheit--FLZ; Angstbewältigungsinventar--ABI and the Fragebogen zum erinnerten elterlichen Erziehungsverhalten [FEE]). The relevant results will be reported.