Aims:To develop a Spanish version of the Moral Identity Questionnaire (MIQ) and evaluate its psychometric properties among a population in Spain.Methods:A Spanish version of the Moral Identity Questionnaire (MIQ) was developed by a Spanish and English speakers through translation and back-translation. The translated MIQ was administered to a sample of Spanish general population. The validity and reliability of the scale were tested using standard statistical methods.Results:The translated version of the MIQ scale was found to have outstanding domain coherence and language clarity. The tested scales have adequate reliability (>0.55). Confirmatory factor analysis confirmed the two-factor solution by yielding adequate results. Conclusions:This study presents the first validation of the MIQ questionnaire with Spanish general population. MIQ instrument was found to have satisfactory psychometric properties, resulting in a new moral and social research tool.
