Differential diagnosis of disturbed adolescents with the Minnesota Percepto-Diagnostic Test-Revised.

Two groups of psychiatric adolescent patients (19 schizophrenics, 22 nonschizophrenics) on an acute inpatient ward of a general hospital were compared for their performance on the Minnesota Percepto-Diagnostic Test--Revised. The effects of admission on test performance were also investigated. Results supported the efficacy of the test in differentiating between the two groups. The schizophrenic adolescents scored significantly less well (higher rotation scores) than the nonschizophrenics. It was shown that the groups' test performance significantly improved from admission to nine days later.