Abstract
Consideration of the data on the Overlearning Reversal Effect (ORE) suggests that attention is an important variable in discrimination learning. A linear model is proposed for such learning in which one of three responses occurs: (a) the subject attends and makes a correct choice; (b) the subject attends and makes an error; or (c) the subject does not attend (and is successful with probability 1 2 ). A 3-vector of response probabilities is introduced and linear transformations of this vector are proposed corresponding to the four possible experimental events. The expected mean learning and extinction curves are found, and the expected number of total errors in learning is computed. For appropriate parameter values, an ORE is predicted in terms of total errors, and in terms of probability of correct.
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