TITLE

'Filtering' and the cognitive deficit in schizophrenia

AUTHOR(S)
Hemsley, D. R.; Zawada, S. L.
PUB. DATE
May 1976
SOURCE
British Journal of Psychiatry;May76, Vol. 128, p456
SOURCE TYPE
Academic Journal
DOC. TYPE
journal article
ABSTRACT
This study attempted to clarify the nature of dysfunction in the selective attention of schizophrenics. Within the framework of Broadbent's (1971) theory of information processing it was argued that 'filtering' inefficiency should be reflected in a reduction in the discrepancy in performance on a short-term memory task between the condition of pre-instruction as to the relevant material and that of post-instruction. Three groups of subjects, 10 schizophrenics, 10 depressives, and 10 normals, matched for age and intelligence were tested on such a task. While the overall performance of normal subjects was superior to that of both psychiatric groups, depressives and schizophrenics did not differ. The normal group also showed a significantly greater improvement with pre-instruction than the psychiatric groups; again, the schizophrenics and depressives did not differ significantly, though there was a tendency for schizophrenics to benefit less than depressives from pre-instruction. It appears that 'filtering' difficulties as here defined may not be specific to schizophrenia. Alternative conceptualizations of the cognitive abnormalities shown by schizophrenics, such as slowness of information processing and difficulties in response selection, may be more useful.
ACCESSION #
24796482

 

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics