“…As such, results may have been con founded by undifferentiated relational categories given potential differences in commitment as a function of relationship status (e.g., Rhoades, Stanley, & Markman, 2010). On the other hand, multiple studies have demonstrated that higher commitment level correlates with increased satisfaction, increased investment, and lower quality of alternatives across sexual minority and heterosex ual populations, relationship duration, and types of relationships, including those dating, married, and cohabiting (Bui, Peplau, & Hill, 1996;Davis, 2000;Impett, Beals, & Peplau, 2001-2002Le & Agnew, 2003;McCabe, 2006;Rusbult, Johnson, & Morrow, 1986;Rusbult et al, 1998;Sprecher, 2002). Using average z scores weighted by sample size and then reconverted to R2, Le and Agnew's (2003) meta-analysis of the Investment Model across numerous studies, including heterosexuals and nonheterosexuals, concluded that satisfaction, alternatives, and investment each uniquely contributed to the prediction of commitment, explaining 61% (R = .78) of the variance, as well as successfully explaining 22% (R = .47) of the variance of relationship breakup as a function of commitment level.…”