Related Experiment Video
Updated: Apr 28, 2026

A Method for Investigating Change Blindness in Pigeons Columba Livia
Published on: September 7, 2018
Visual stimulus compounding with pigeons
1Department of Psychology, 0109, University of California, 9500 Gilman Drive, La Jolla, CA 92093, USA.
Abstract:
Eight pigeons responded to successively presented color and line stimuli correlated with different likelihoods of reinforcement (100, 50 and 10%). An intertriai interval was included during training for half of the birds. In Experiment 1, tests with superimposed compounds resulted in variable responding, but overall, rates of responding were intermediate to the rates controlled by the individual component stimuli. In Experiments 2a and 2b, tests with compounds of spatially separated stimuli yielded rates of responding that were intermediate to, and in some cases lower than, responding controlled by the individual component stimuli. These results suggest limitations to the generality of additive models of stimulus compounding when visual stimulus combinations are employed.
Related Concept Videos
Vision
Visual System
Once through the pupil, the light passes through the lens, a...
Color Vision
Photoreceptors and Visual Pathways
Focusing of Light in the Eye
Anatomy of the Eyeball

