The dimensionality of alternate forms of the Sex-Role Egalitarianism Scale (SRES) was assessed using confirmatory factor analysis. The subjects, predominantly Caucasian students from seven colleges in the United States and Canada, completed Form B (n = 1,351) and Form K (n = 633) of the instrument. A series of hierarchically nested measurement models was specified and evaluated. A hypothesized two-factor, second-order solution was deemed most appropriate for both forms: a higher order “Intimate Relationship Egalitarianism” factor that subsumes three first-order domain factors (marital, parental, and social-interpersonal-heterosexual roles) and a higher-order “Formal Relationship Egalitarianism” factor that subsumes two first-order domain factors (educational and employment roles).