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A pigeon is presented with a blue key and a red key in alternating order. In the presence of the blue key, it earns food on a VI 200-sec schedule. In the presence of the red key, it earns food on a VI 600-sec schedule. The VI 600-sec schedule is then changed to a VI 100-sec schedule. As a result, rate of response on the VI 200-sec schedule will , which is known as a(n) contrast effect.
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A pigeon is presented with a blue key and a red key in alternating order. In the presence of the blu...
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