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This study presents the psychometric proprieties of the Italian version of the Social Dominance Orientation7 (SDO7) Scale, originally developed by Ho et al. (2015). We recruited a convenience sample (N = 497) to answer an online self-report questionnaire, including the SDO7 Scale and other relevant convergent and divergent measures. The confirmatory factor analysis revealed that SDO7 presents a satisfactory fit to the data, both as a two-correlated factor structure and as a one-dimensional measure. The two-correlated factor structure is confirmed as composed by two subdimensions as in the original version: the SDO-Dominance (SDO-D) and the SDO-Anti-Egalitarianism (SDO-E). Since the total SDO7 score measures people's support for asymmetrical group relationships, the SDO-D is concerned with people's support for dominant-submissive forms of intergroup relationships whereas the SDO-E refers to the desire to support intergroup inequalities. The scale and subscales also present satisfactory indexes of reliability as well as convergent and divergent validity. [ABSTRACT FROM AUTHOR]