title: Time estimation by pigeons on a fixed interval: the effect of pre-feeding.
abstract: Pigeons well trained on a fixed interval 10-s schedule of reinforcement were tested on the peak procedure. In a successive conditions design, they were either pre-fed or not in the experimental setting. Pre-feeding decreased the rate of responding. It also led to a maximum rate of responding that occurred 2-3 s later than in the control condition, where the maximum occurred at the usual time of reinforcement. The shift in peak time in response to pre-feeding shows that peak time may not be a pure measure of timing. The results are also interpreted in terms of timing theories.
authors.affiliation: School of Psychology, University of Ottawa, K1N 6N5, Ottawa, Ont., Canada
authors.initials: CM
authors.lastname: Plowright
authors.initials: D
authors.lastname: Church
authors.initials: P
authors.lastname: Behnke
authors.initials: A
authors.lastname: Silverman