What is one explanation for the peak shift effect?
a. Subjects respond well to rewards in a positive contrast effect.
b. Subjects respond to relative values rather than absolute values during discrimination training.
c. Subjects respond more intensely when on a multiple schedule of reinforcement.
d. Subjects respond more consistently in a negative contrast effect.
Answer: b. Subjects respond to relative values rather than absolute values during discrimination training.
One explanation for the peak shift effect is that during discrimination training, subjects respond in terms of the relative, rather than the absolute values, of stimuli. Thus, according to this interpretation, the rat does not learn merely that a 2000-Hz tone indicates food and a 1200-Hz tone indicates no food; rather, it learns that a higher-pitched tone indicates food and a lower-pitched tone indicates no food. Given a choice, the rat therefore emits the strongest response in the presence of a tone that has the highest pitch.
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What will be an ideal response?