Personalities of 64 sex offenders (rapists, molesters, and incestuous types) referred for treatment were compared. No significant differences on MMPI scores or IQ were noted among subgroups of molesters. Significant trait anxiety indicated that molesters of both males and females had higher anxiety than incestuous offenders. Also, a significant difference was noted on state anxiety; all groups decreased scores over treatment. A significant effect of brief therapy also occurred for trait anxiety. All groups but incestuous offenders decreased on trait anxiety over 5-wk. therapy. Male and female molester groups decreased in self-esteem whereas incestuous types and rapists increased in self-esteem. Implications are provided for these results.