Childhood precursors of affective vs. social deficits in adolescents at risk for schizophrenia. - Dworkin,E.H.; Cornblatt,B.A.; Frieman,R.; Kaplansky,L.M.; Lewis,J.A.; Rinaldi,A.; Shilliday,C.; Erlenmeyer,L. (Schizophrenia Bulletin, 1993)