correla- tion with insight and negative symptoms in first-psychotic- episode subjects. Acta Psychiatrica Seandinavica, 123, 431-439. "'Berman, K.F., Zec, R.F. & Weinberger, D.R. (1986) Physiologic dysfunction of the dorsolateral prefrontal cortex in schizophre- nia: II. Role of ncuroleptic treatment, attention, and men