FIGURE 2.17 Initial behavior on a fixed-interval schedule. This figure shows the general timing model's cumulative response function for the first ten intervals on an FI schedule after standard continuous reinforcement training. As in animals, the model begins with an inverted scallop pattern and gradually changes to a normal FI scallop pattern over successive trials. The black circles mark where the model received a reinforcement. The data shown represent the average of five simulations.

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