Exploring the dimensionality of the TRIM-18 in the Spanish context

Abstract

Introduction: The Transgression-Related Interpersonal Motiva-tions Inventory (TRIM-18) is an instrument that assesses episodic for-giveness composed of three subscales: avoidance, revenge and benevo-lence. In the present study we examined the dimensionality of the Spanish version of the TRIM-18 (TRIM-18-S). We provided evidences of estimated reliability and construct validity of the interpretation of the scores. Method: A total of 943 participants completed the TRIM-18-S. A subset of 94 par-ticipants completed the measure again to allow computation of two-week estimated temporal stability, and 277 participants completed additional measures of empathy, anger, and information regarding the relation with the offender to allow computations supporting construct validity. Results: The TRIM-18-S showed good psychometric properties. Confirmatory fac-tor analysis revealed a three-factor structure. Alphas ranged from .80 to .90. Two week estimated test-retest correlations ranged from .74 to .84. Con-struct validity was supported by correlations with a single-item measuring forgiveness and with empathy, state anger, and closeness and type of rela-tionship. Conclusions: The scale presents adequate psychometric properties for its potential use in Spanish population.