Time discrimination in Columba livia and Homo sapiens.
Pigeons' ability to discriminate stimulus duration, focusing on stimuli less than 1 s in duration, was evaluated in 4 experiments. In Experiment 1, the performances of pigeons and humans were compared with a staircase technique, and in Experiment 2, the method of constant stimuli was used. Both experiments produced similar results: The pigeon and human data were well described by the generalized form of Weber's law (Getty, 1975). Experiment 3 demonstrated that the birds did not use perceived brightness to mediate the discrimination of brief visual durations. Experiment 4 used a modified staircase procedure that yielded a continuous measure of discrimination from absolute threshold (0 s) to about 1 s. The difference thresholds were constant over a considerable range, similar to findings reported by Kristofferson (1980) for human timing.
Fetterman
J G
JG
Department of Psychology, Indiana University--Purdue University, Indianapolis 46205-2180.
Killeen
P R
PR
D000328:Adult; D000818:Animals; D001076:Aptitude; D001288:Attention; D010856:Columbidae; D004193:Discrimination Learning; D006801:Humans; D008297:Male; D011939:Mental Recall; D013045:Species Specificity; D013998:Time Perception