Effects of Delay of Reinforcement on Probability Learning by Aphasic Subjects Nine aphasic and nine nonaphasic subjects participated in a probability learning problem in which they attempted to track changing reinforcement ratios on two manipulanda. During portions of the problem, delay of reinforcement was introduced, and its effect upon each subject’s performance was examined. The performance of nonaphasic subjects did not ... Research Article
Research Article  |   March 01, 1971
Effects of Delay of Reinforcement on Probability Learning by Aphasic Subjects
 
Author Affiliations & Notes
  • Robert H. Brookshire
    Veterans Administration Hospital, Kansas City, Missouri
Article Information
Research Articles
Research Article   |   March 01, 1971
Effects of Delay of Reinforcement on Probability Learning by Aphasic Subjects
Journal of Speech, Language, and Hearing Research, March 1971, Vol. 14, 92-105. doi:10.1044/jshr.1401.92
History: Received August 14, 1969
 
Journal of Speech, Language, and Hearing Research, March 1971, Vol. 14, 92-105. doi:10.1044/jshr.1401.92
History: Received August 14, 1969

Nine aphasic and nine nonaphasic subjects participated in a probability learning problem in which they attempted to track changing reinforcement ratios on two manipulanda. During portions of the problem, delay of reinforcement was introduced, and its effect upon each subject’s performance was examined. The performance of nonaphasic subjects did not appear to be affected by introduction of 1- and 2-sec delay of reinforcement. Two aphasic subjects did not learn to track changing reinforcement ratios even under conditions of no delay. The performances of five of the seven remaining aphasic subjects were influenced by the introduction of 1- and 2-sec delay of reinforcement. The performance of the remaining two aphasic subjects did not appear to be affected by introduction of delay of reinforcement.

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