To the Editor: We thank Dr. Alessi for his thoughtful comments on our study of mood disorders in juvenile offenders. Dr. Alessi is concerned by the high rate of mania found in our subjects, in contrast to the 4% rate found in his own work (Alessi et al., 1984). However, his own work has shown that 36% of the offenders had "agitated subtypes" of depression. He notes that he and his colleagues did not consider agitation/irritability a primary mood symptom in identifying bipolar illness, only "euphoria of a relatively prolonged nature." DSM-IV clearly states, however, that "a manic episode is defined by a distinct period during which there is an abnormally and persistently elevated, expansive, or irritable mood" (p. 328). Since Dr. Alessi and colleagues used a more narrow definition of mania, it is not surprising that they found a lower rate of bipolar illness in offenders than did we. Of note, we found that only three (6%) out of 50 juveniles met the criteria for pure euphoric mania, which is consistent with the 4% rate of euphoric mania found by Dr. Alessi and colleagues (Alessi et al., 1984).