The Spanish adaptation of the Interpersonal Sexual Objectification Scale (ISOS).

BACKGROUND Sexual objectification of women is a subtle manifestation of gender violence. The aim of this study was to adapt the 15-item Interpersonal Sexual Objectification Scale (ISOS) to Spanish to obtain a valid instrument to evaluate this construct. METHOD After its adaptation, the questionnaire was administered to 771 women from the general population. Subsequently, the psychometric properties of the questionnaire were evaluated from both the classical perspective and item response theory. RESULTS The data obtained were very similar to those of the original version. The ISOS showed good internal consistency and a two-factor structure: body evaluation and unwanted explicit sexual advances. In addition, the ISOS showed correlations with benevolent sexism, state-anxiety and self-esteem. CONCLUSIONS The Spanish version of the ISOS is a reliable and valid measure of sexual objectification of women in the interpersonal context.