Overview and summary: twenty-five-year followup of high-risk children.

We report a 25-year followup of a group of 50 children at genetic risk for schizophrenia (by virtue of having a parent with the disorder) and 50 matched controls. The children who eventually developed schizophrenia spectrum disorders, including schizophrenia, were identifiable by cognitive-psychophysiological, neurointegrative, and social/personality traits in the preteenage period. The children at risk were also more likely to develop other Axis I disorders, chiefly affective. Moreover, the risk of Axis I disorders was significantly greater among children raised in the group atmosphere of a kibbutz than among those raised in their own nuclear families in cities and towns in Israel. The study is a unique contribution to knowledge of factors underlying the development of psychopathology.