Successive discrimination in the rat using sensory change as the reward

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Abstract
An experiment was conducted with rats as Ss to determine if sensory reinforcement could support a successive discrimination. The animals were reinforced with either light Offset or sound Offset over a number of trials. In consecutive 2.5 min periods of each 20 min trial, bar pressing was reinforced with sensory change and then not reinforced. In some treatments distinctive environmental cues were associated with reinforcement and non‐reinforcement periods. Control groups were reinforced throughout the whole trial. Reversal of cues associated with reinforcement and nonreinforcement periods occured in later phases of the experiment. The results showed that the sensory rewards supported a successive discrimination.

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