Medical News Today: Psychotic disorders: Childhood IQ may predict onset

Medical News Today: Psychotic disorders: Childhood IQ may predict onset

In all, the study used data from 4,322 people from the U.K., all of whom were followed from the age of 18 months to 20 years. After analysis, they found that individuals who went on to develop psychotic disorders in adulthood performed normally in IQ tests during infancy, but by the age of 4, there was evidence of a decline in cognitive ability. When they reached adulthood, a 15-point gap had opened up between them and the control group. Deficits were found in working memory, attention, and processing speed. When compared with the other conditions, only those with psychotic disorder...

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