Abstract
The focus of this study was a transducing task in which various information items (stimulus elements) are sequentially presented and S is required to make the appropriate response for a set of such elements. The goal was to determine the role of redundancy (one to two surplus elements) in ameliorating or heightening the sharp performance decrement previously found to result when input rates exceed a crucial range. Results showed an optimum level of redundancy for this task, which could be analyzed as a resultant of a facilitative influence and a detrimental one. Practice at various levels of redundancy seemed to transfer equally to posttest conditions when the levels of redundancy in the latter were crossed over.
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