Article Title：The long-term effect of high- and low-rate responding histories on fixed-interval responding in rats
Abstract：
Ten rats were given extended lever-press training on a fixed-interval (FI) 30-s food reinforcement schedule from the outset or following exposure to one or two previous reinforcement schedules. For 4 rats the previous schedule was either fixed-ratio 20, which generated high response rates, or differential-reinforce ment-of-low-rate 20 s, which produced low response rates. For 4 additional rats the extended training on FI 30 s was preceded hy experience with two schedules: fixed-ratio 20 followed by differential-reinforcement-of-low-rate 20 s; or the same two schedules in the reverse order. Fixed-interval response rates were initially affected by the immediately preceding schedule, but after 80 to 100 sessions, all traces of prior schedule history had disappeared. The results also showed no longterm effect of schedule history on the interfood-interval patterns of responding on the FI 30-s schedule. These results support one of die most central tenets of the experimental analysis of behavior: control by the immediate consequences of behavior.
Keywords: fixed interval; fixed ratio; differential reinforcement of low rates; schedule history; lever press; rats
DOI: 10.1901/jeab.2001.75-43
Source：JOURNAL OF THE EXPERIMENTAL ANALYSIS OF BEHAVIOR
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