FIGURE 2.14 Peak-interval procedure simulation, response rate. This figure shows the average response rate over the course of a probe trial in the PI procedure. The shape of the function is similar to that found in animals, with an initial slow rate of response building up to a peak at approximately the previously reinforced interval and then falling away.

nonreinforced trials that the portion of the curve after the reinforced interval begins to mirror the first half of the curve. In this model, that is not what is found. On the first probe trial, the peak is already formed. This may indicate a problem with the way the model has been trained for these simulations or with the model itself.

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