Abstract
The Inventory of Interpersonal Problems (IIP) is a widely studied instrument in the mental health field. While there have been some applications of this tool in adolescents, the majority of research has focused on the adult population. This study aims to examine the psychometric properties of the Inventory of Interpersonal Problems-32 (IIP-32) specifically in Argentinian adolescents. A total of 557 participants completed the IIP-32 alongside an additional assessment of interpersonal traits. To evaluate reliability, we analyzed internal consistency and item homogeneity. We analyzed the construct validity of IIP-32 through confirmatory factor analysis and the concurrent validity through correlations between the IIP-32 and other measures of interpersonal traits. The findings of this study indicate adequate internal consistency and homogeneity of the items, as well as construct, concurrent and criterion validity. Overall, the results of this paper establish the IIP-32 as a reliable and valid instrument with significant clinical implications for assessing interpersonal difficulties in adolescents from Argentina.