Serper M R, Bergman R L, Harvey P D
Department of Psychiatry, Mt. Sinai School of Medicine, New York, NY 10029.
Psychiatry Res. 1990 Jun;32(3):281-8. doi: 10.1016/0165-1781(90)90033-2.
Medicated and unmedicated schizophrenic patients and normal subjects (n's = 4) were examined on the extent to which their information-processing performance became automated over time, as reflected by increased competence in dual task performance. The central task was a computerized version of the Continuous Performance Test, and the secondary task was a word-list shadowing task. Normal subjects and medicated schizophrenic patients became much more efficient at performing both tasks simultaneously with practice, with unmedicated patients showing no improvement over time.
