“…As expected, satisfaction, investment level, and quality of alternatives have been found to predict commitment in romantic relationships (Drigotas, Safstrom, & Gentilia, 1999;Rusbult, 1980Rusbult, , 1983Rusbult, Johnson, & Morrow, 1986), including in a 15-year longitudinal study that featured data from both relational partners (Bui, Peplau, & Hill, 1996). Further, the IM has been used to predict commitment in platonic friendships (Allen, Babin, & McEwan, 2012;Branje, Frijns, Finkenauer, Engels, & Meeus, 2007), supporting the predictive power of the IM across relationship types. Additionally, the IM has demonstrated utility within a variety of other contexts.…”