Methods of psychophysics can be applied to research on the pigeon by bringing the behavior of the bird under stimulus control and by measuring the appropriate response. When used properly, the methods would show the least amount of energy (the absolute threshold) and the least amount of change in stimuli (the relative threshold) that the bird can detect. One of the foremost problems of animal psychophysics is to find a simple and dependable response. Various methods that have been used are described and evaluated in light of the response problem.
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