A Short Form of the Inventory of Interpersonal Problems Circumples Scales

Abstract

The 127-item Inventory of Interpersonal Problems (IIP) has proven useful in capturing clinically important aspects of client's interpersonal functioning. Alden, Wiggins, and Pincus constructed a 64-item circumplex form of the IIP (IIP-C). We found that an even shorter form was needed for situations involving the screening of patients in a brief time. We, therefore, constructed a 32-item short circumplex form (IIP-SC). This form was found to exhibit excellent internal consistency reliability and strong test-retest correlations in three outpatient samples. It was found to correlate highly with the longer forms of the IIP and to show similar treatment responsiveness to them. The IIP-SC has also been demonstrated to correspond closely to the circumplex model of interpersonal behavior. The IIP-SC is, thus, an adequate substitute for the complete IIP in settings where brevity is important.