Psychometric properties of Persian version of Black & Reynolds’s Moral Identity Questionnaire (MIQ)

The aim of this research was to determine the psychometric properties of Moral Identity Questionnaire.

Research method was correlational, and population included 10183 male and female students of Mazandaran University in 2017-2018 academic year. Among them, on the basis of sampling table of Morgan and Krejcie 1970 and through multistage cluster random sampling, 381 students for EFA and 384 students for CFA and reliability (in total 765) of the questionnaire were selected. In the sampling process, four faculties of humanity and social sciences, chemistry, economics and administrative sciences and basic sciences were randomly selected among twelve faculties. From the department of each faculty, two bachelor’s classes, one master class and one PhD class were selected. Totally, 726 students answered the Black and Reynolds’s (2016) moral identity questionnaire. After removing 61 incomplete questionnaires, 665 questionnaires were analyzed.

The results of EFA indicated that the questionnaire has two dimensions of moral self and moral integrity, which was verified by CFA as well. The result of Pearson correlation showed a moderate correlation between the dimensions (r= 0.29, P= 0.0001) and a very strong correlation between moral self dimension (r= 0.74, P= 0.0001), and moral integrity dimension (r=0.85, P=0.0001) with the total score of the questionnaire. Moreover, Cronbach’s alpha for the dimensions and total score varied from 0.80 to 0.85.

MIQ is appropriate for 18 years old subjects and above. It has an acceptable reliability and validity and can be used to measure moral identity of students and other classes of the society to identify moral self and moral integrity factors.