• A test of sustained attention (the Continuous Performance Test) was administered to a group of children at risk for the eventual manifestation of schizophrenia and to a group of "normal control" children. Differences in performance between the two groups were attributable to poorer discriminability on the part of the high-risk subjects.
Rutschmann J, Cornblatt B, Erlenmeyer-Kimling L. Sustained Attention in Children at Risk for Schizophrenia: Report on a Continuous Performance Test. Arch Gen Psychiatry. 1977;34(5):571–575. doi:10.1001/archpsyc.1977.01770170081007
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