Instructions,Self-Instructions and Performance

Abstract

Four semantically equivalent instructions were used for a classification task, in which response was required to the larger of two classes of items. The variables in the instructions were (1) the explicitness of the negative used to define the smaller class, and (2) the order of reference to this class within the sentence. Superior performance was obtained with instructions containing “except” compared with those using “not,” regardless of order. Analysis of the self-instructions generated by the subjects, prior to performance, indicated that their form was largely determined by the given instruction. Speed of performance was related to form of self-instruction elicited prior to the task, but not to that elicited after completion of the task.