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<p>Mate retention behaviors are psychological strategies aimed at preventing partner infidelity or defection, and certain tactics are known risk factors for intimate partner violence. While validated measures of mate retention exist in many cultures, few have been developed for East Asian populations. This study adapted the Mate Retention Inventory-Short Form (MRI-SF) into Japanese (MRI-SF-J) and examined its psychometric properties among Japanese university students (<i>N</i> = 331) and adults (<i>N</i> = 512). Exploratory factor analysis supported a two-factor structure distinguishing benefit-provisioning and cost-inflicting behaviors, consistent with prior cross-cultural research. Confirmatory factor analysis confirmed the stability of this structure across sexes in the adult sample. The MRI-SF-J demonstrated high internal consistency and test–retest reliability. Convergent validity was supported through significant associations with commitment, abandonment anxiety, and partner violence. Sex differences aligned with evolutionary predictions: men employed more rivalry-oriented and aggressive tactics, whereas women favored indirect behaviors such as appearance enhancement and jealousy induction. These findings suggest that while the evolutionary functions of mate retention behaviors may be universal, cultural norms in Japan modulate their specific expressions. The MRI-SF-J provides a valid instrument for future research on relationship dynamics and partner violence in East Asian populations.</p>

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Adaptation and Validation of the Mate Retention Inventory-Short Form to Japan

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • Hitomi Terashima

摘要

Mate retention behaviors are psychological strategies aimed at preventing partner infidelity or defection, and certain tactics are known risk factors for intimate partner violence. While validated measures of mate retention exist in many cultures, few have been developed for East Asian populations. This study adapted the Mate Retention Inventory-Short Form (MRI-SF) into Japanese (MRI-SF-J) and examined its psychometric properties among Japanese university students (N = 331) and adults (N = 512). Exploratory factor analysis supported a two-factor structure distinguishing benefit-provisioning and cost-inflicting behaviors, consistent with prior cross-cultural research. Confirmatory factor analysis confirmed the stability of this structure across sexes in the adult sample. The MRI-SF-J demonstrated high internal consistency and test–retest reliability. Convergent validity was supported through significant associations with commitment, abandonment anxiety, and partner violence. Sex differences aligned with evolutionary predictions: men employed more rivalry-oriented and aggressive tactics, whereas women favored indirect behaviors such as appearance enhancement and jealousy induction. These findings suggest that while the evolutionary functions of mate retention behaviors may be universal, cultural norms in Japan modulate their specific expressions. The MRI-SF-J provides a valid instrument for future research on relationship dynamics and partner violence in East Asian populations.