Variable-ratio conditioning history produces high- and low-rate fixed-interval performance in rats.

@article{Wanchisen1989VariableratioCH,
  title={Variable-ratio conditioning history produces high- and low-rate fixed-interval performance in rats.},
  author={B A Wanchisen and Thomas A. Tatham and Sinead Mooney},
  journal={Journal of the experimental analysis of behavior},
  year={1989},
  volume={52 2},
  pages={
          167-79
        }
}
Four rats were exposed to an A-B-A-B series of 30 sessions each of variable-ratio 20 (A) and fixed-interval 30-s (B) schedules. Four other rats received 120 sessions of fixed-interval 30 s. The rats with a history of variable-ratio responding subsequently showed primarily high or low response-rate patterns on the fixed-interval schedule without evidence of classical scalloping (i.e., increased rates of responding throughout the interreinforcement interval), except infrequently in 1 rat. The… CONTINUE READING

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