Discrimination and reversal learning as a function of change of sensory stimulation

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Rats learned a discrimination, wherein pressing 1 lever led to the onset of light and pressing another lever did not, by the 4th of a series of 10-min. daily trials. Reversal learning was accomplished on the 2nd trial following reversal. Rats receiving onset of light following the pressing of either of 2 levers responded more frequently than animals which did not receive light. Sensory change appears to be “an effective reinforcement for both discrimination learning and operant conditioning.” From Psyc Abstracts 36:01:1EJ91F. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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