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The antecedents of non‐affective psychosis in a birth‐cohort, with a focus on measures related to cognitive ability, attentional dysfunction and speech problems
Author(s) -
Welham J.,
Scott J.,
Williams G. M.,
Najman J. M.,
Bor W.,
O’Callaghan M.,
McGrath J.
Publication year - 2010
Publication title -
acta psychiatrica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.849
H-Index - 146
eISSN - 1600-0447
pISSN - 0001-690X
DOI - 10.1111/j.1600-0447.2009.01470.x
Subject(s) - psychology , psychosis , cohort , cognition , raven's progressive matrices , developmental psychology , peabody picture vocabulary test , schizophrenia (object oriented programming) , cognitive test , audiology , clinical psychology , psychiatry , medicine
Welham J, Scott J, Williams GM, Najman JM, Bor W, O’Callaghan M, McGrath J. The antecedents of non‐affective psychosis in a birth‐cohort, with a focus on measures related to cognitive ability, attentional dysfunction, and speech problems. Objective: Adults with non‐affective psychosis show subtle deviations in a range of developmental trajectories as children and adolescents. Method: Based on a birth‐cohort ( n = 3801), we examined the Peabody Picture Vocabulary Test (PPTV) at age 5, and Raven’s Standard Progressive Matrices (RSPM) and Wide Range Achievement Test reading scale (WRAT‐R) at age 14. Items related to speech problems and attentional dysfunction were available from maternal‐ or self‐report. At age 21, we identified 60 cohort members who were screen‐positive for non‐affective psychosis (SP‐NAP). Results: Impaired performance on the PPVT and RSPM (but not WRAT‐R) predicted SP‐NAP for males only. Male cohort members in the highest quartile for attentional dysfunction at ages 5 and 14 were about 5–8 times more likely to develop SP‐NAP. SP‐NAP in males was significantly associated with speech problems at age 14. Conclusion: Males who develop non‐affective psychoses have subtle impairments in cognitive capacity prior to the development of their psychotic disorder.