Psychometric properties of the Inventory of Interpersonal Problems Circumplex Scales short form: a reliability and validity study

Abstract

Objective: Considering the lack of an instrument in Turkish to measure individuals’ interpersonal difficulties, our aim was to adapt a short version of the Inventory of Interpersonal Problems Circumplex Scales (IIP-C) for Turkish culture, and we studied the psychometric properties of the scale. Method: Our study included 1298 adult participants from the normal population (411 females and 887 males) between the ages of 18 and 68. In order to establish reliability and validity of the Turkish version of the IIP-C, internal consistency, test-retest reliability, split-half reliability coefficients, and concurrent and criterion validity studies were conducted. The validity study analyzed correlations with the Positive and Negative Affect Schedule, the Brief Symptom Inventory, the Multidimensional Scale of Perceived Social Support and the Basic Personality Traits Inventory. Results: The results of the study indicated good internal consistency, test-retest and split-half reliability coefficients of the IIP-C, assessing overall level of interpersonal difficulty and distress due to various interpersonal problems. Moreover, findings supported concurrent and criterion validity of the inventory, in addition to the two-factor structures consistent with the original inventory. Conclusion: The psychometric properties of IIP-C seem to be acceptable; therefore, the instrument can be utilized for research and clinical purposes in Turkey.