Investigations of Kaplan's self-derogation theory of delinquency are numerous, but results have been mixed. Progress in this domain of research may be hampered by the use of statistical methods that do not optimally test hypotheses derived from the theory. In this study, the relationship between self-esteem and delinquency is examined using latent growth curve modeling (LGM). Analyses of panel data from the Youth In Transition study supported Kaplan's theory by showing that delinquency was positively associated with growth in self-esteem among adolescent boys who initially reported having low self-regard. It was also found that self-esteem had a moderate, but significant, negative relationship with subsequent delinquency, net of prior delinquent behavior. It is concluded that future investigations of the relationship between self-esteem and delinquency would benefit from the use of LGM.