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- Publisher
- American Psychological Association
- Copyright
- Copyright © 1975 American Psychological Association
- ISSN
- 0021-843X
- eISSN
- 1939-1846
- DOI
- 10.1037/h0076721
- Publisher site
- See Article on Publisher Site
Abstract
Previous results comparing schizophrenics' and normals' performance in neutral and distractor conditions may be an artifact of discriminating power. Therefore, in a study using 50 33-yr-old inmates in a correctional institution, 50 42-yr-old attendants at a state hospital, and 50 undergraduates, 4 digit-span tests were constructed. 2 contained irrelevant distractor numbers between presentations of relevant numbers. Each distractor test was matched with a neutral test for coefficient alpha, mean, and variance of test difficulty using 100 normal Ss. This matching was cross-validated on 50 additional normal Ss. The 1st pair of tests contained shorter digit-strings than the 2nd pair. 19 chronic schizophrenics showed a differential performance deficit on the longer distractor test but not on the shorter test. It is suggested that distraction debilitates schizophrenics' performance by interfering with subjective organization in short-term memory.
Journal
Journal of Abnormal Psychology – American Psychological Association
Published: Jun 1, 1975