In this study, we sought to determine whether changes in narcissism am
ong adolescents occurred during a 6-month period of treatment for subs
tance abuse and whether level of narcissism was related to progress in
treatment and treatment persistence versus withdrawal. Participants w
ere 95 adolescents (M = 16 years of age) entering or already in long-t
erm treatment for drug abuse, surveyed three times over 6 months. Narc
issism was measured by two instruments based on Kohut's theory of narc
issistic development. Findings indicated that many, but not all, narci
ssistic characteristics did change during treatment. Theorized relatio
ns were found between narcissism scores and progress in treatment for
most narcissistic manifestations. The ability to relinquish angry acti
ng-out behavior distinguished dropouts from persisters.