No vigilance deficit found in either young schizophrenic or ADHD subjects

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Abstract
Vigilance deficits have been found in both schizophrenic and ADHD subjects. The two patient groups have never been directly compared on any vigilance measure, however. In the present study 20 early‐onset schizophrenics were compared to 20 ADHD adolescents on a Degraded Stimulus Continuous Performance Test (DS‐CPT). A comparison group of 30 normal adolescents was also included. Results showed no significant differences between the three groups on any of the DS‐CPT measures. Different hypotheses are put forth to explain the findings, among them that the task may be insensitive to identifying sustained attention deficits in adolescent populations.

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