UNTIL newly SCHIZOPHRENIA was believed to make known in late adolescence or early adulthood.

UNTIL newly SCHIZOPHRENIA was believed to make known in late adolescence or early adulthood. However, general theories suggest that it is a neurodevelopmental disorder, with the initial stages of the illness becoming evident as early as the first hardly any years of life (M. Cannon et al., 2002; Davidson et al., 1999; Lewis & Levitt, 2002; Weinberger, 1995) Consistent with this view, there have been an increasing number of research investigations of premorbid functioning in schizophrenia. (1) the one and the other prospective and retrospective investigations have revealed a variety of cognitive and

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