Effects ofdecreasing reinforcement avaz'labz'lz'ty in a signalled temporal schedule

Abstract

Six naive rats were used to measure the elfects 01 decreasing T in a T schedule 0168 seconds, keeping a signal for tD, under contingent and non conti~gent reinforcement. Results showed operant level superior to zero, even though there was no shaping, per­lormances similar to performance with schedules of diflerential reinforcement 01 low rates, and minor effects resulting from order of cantingent and non contingent con­ditions. Based on results, equivalence 01 functions 01 P and T parameters in temporally delined schedules is put under question.