EFFECTS OF INSTRUCTIONS AND REINFORCEMENT‐FEEDBACK ON HUMAN OPERANT BEHAVIOR MAINTAINED BY FIXED‐INTERVAL REINFORCEMENT1

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Abstract
In three experiments, human subjects were trained on a five‐component multiple schedule with different fixed intervals of monetary reinforcement scheduled in the different components. Subjects uninstructed about the fixed‐interval schedules manifested high and generally equivalent rates regardless of the particular component. By comparison, subjects given instructions about the schedules showed orderly progressions of rates and temporal patterning as a function of the interreinforcement intervals, particularly when feedback about reinforcement was delivered but also when reinforcement‐feedback was withheld. Administration of the instructions‐reinforcement combination to subjects who had already developed poorly differentiated behavior, however, did not make their behavior substantially better differentiated. When cost was imposed for responding, both instructed and uninstructed subjects showed low and differentiated rates regardless of their prior histories. It was concluded that instructions can have major influences on the establishment and maintenance of human operant behavior.

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