Journal
SCHIZOPHRENIA RESEARCH
Volume 71, Issue 2-3, Pages 213-225Publisher
ELSEVIER
DOI: 10.1016/j.schres.2004.03.008
Keywords
schizophrenia; psychosis; development; risk; motor; precursors
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Childhood precursors of schizophrenia include multiple abnormalities of development. Continuities between early and subsequent deviance are poorly characterised. We studied associations among premorbid developmental deviance using data at ages I year (teaming to stand, walk, and speak, attainment of bladder and bowel control) and 16 years (success at school). Generalised linear modelling was used to examine differential linear associations and trends across adult psychiatric diagnoses. In babies who, as adults, suffered schizophrenia or any psychosis, those who learned to stand latest were also more likely to perform poorly at school in both motor and theoretical domains at age 16 when-compared with earlier learners. The effect was independent of genetic and perinatal factors. We conclude that the early developmental deviation in the first year of life is associated with lower school performance at age 16. Developmental. continuity among,children who develop psychoses was stronger than among normal controls and those hospitalized for nonpsychotic psychiatric disorder. These findings are in line with the hypothesis that a neural diathesis is present during postnatal brain development before schizophrenia. this supports the longitudinal dimension and life span models of schizophrenia. (C) 2004 Elsevier B.V. All rights reserved.
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