Research suggests that self-esteem increases during late adolescence and young adulthood, but that there is large interindividual variability in this development. However, little is known about the factors accounting for these findings. Using propensity score matching, we tested whether important transitions in the domain of romantic relationships (i.e., beginning a relationship, marrying, and breaking up) explain why individuals differ in the particular selfesteem trajectory they follow. Data came from a longitudinal German study with a large sample of three nationally representative cohorts of late adolescents and young adults (total N = 9,069).The analyses were based on four assessments across a three-year period. Using matched samples, the results showed that beginning a relationship increased self-esteem and that the increase persisted when the relationship held at least for one year. Experiencing a relationship break-up decreased self-esteem, but the effect disappeared after one year, even if the participant stayed single. Marrying did not influence self-esteem. Additionally, we tested for selection effects of self-esteem on the later occurrence of relationship transitions. High self-esteem predicted the beginning of a relationship and low self-esteem predicted relationship break-up. All findings held across gender, age, and migration background. Furthermore, relationship quality mediated the effect of self-esteem on relationship break-up and the effect of beginning a longer vs. a short relationship on self-esteem. The findings have significant implications because they show that self-esteem influences whether important transitions occur in the relationship domain and that, in turn, experiencing these transitions influences the further development of self-esteem.Keywords: self-esteem development, life transitions, romantic relationships, propensity score matching, longitudinal
ROMANTIC RELATIONSHIPS AND SELF-ESTEEM DEVELOPMENT 3 Transitions in Romantic Relationships and Development of Self-EsteemIn recent years, there has been a growing interest in the development of self-esteem.Research has shown that self-esteem-which is defined as "an individual's subjective evaluation of her or his worth as a person" (Donnellan, Trzesniewski, & Robins, 2011, p.718)-typically increases during late adolescence and young adulthood, but that individuals differ substantially in the particular self-esteem trajectory they follow (e.g., Orth & Robins, 2014;Trzesniewski, Donnellan, & Robins, 2013). However, surprisingly little is known about the factors that shape self-esteem development. Although many researchers assume that events occurring in a person's life such as establishing a romantic relationship or being promoted have the potential to affect a person's level of self-esteem, only few studies have actually tested whether important life events and life transitions influence self-esteem (see Orth & Luciano, 2015). Thus, there is a need for a better understanding of the factors that account for individual differenc...