Examining the Measurement Invariance of the Conformity to Masculine Norms Inventory (CMNI-30) by Sexual Orientation

An abbreviated version of the Conformity to Masculine Norms Inventory, the CMNI-30, was developed with several strengths. However, its measurement invariance across men with different sexual orientations has not been examined in a U.S. sample, so it is unclear whether these different populations understand the items similarly. In addition, no studies have compared conformity to masculinity norms across sexual orientations. This would be important to understand sexual minority men's experience of masculinity and how it differs from heteronormative masculinity. This article explores the measurement invariance of the CMNI-30 among 882 heterosexual, gay, and bisexual+ men using confirmatory factor analysis, and compares their CMNI-30 subscale scores. Results indicated that the CMNI-30 demonstrated residual invariance between men of different sexual orientations, suggesting that men of different sexual orientations interpreted the items similarly. We also found higher levels of conformity to the masculine norms of Winning, Heterosexual self-presentation, and Power over women among heterosexual men relative to gay and bisexual+ men, and higher levels of Pursuit of status among gay men relative to the other groups. Results provide support for the use of the CMNI-30 in research with men of different sexual orientations.