Range effects in successive discrimination.

J M Hinson; G R Lockhead

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PubMed · 3734695

Range effects in successive discrimination.

J M Hinson·G R Lockhead

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Abstract

In two sets of experiments we examined pigeons' discrimination performance with a visual flicker-rate continuum, using a conventional successive discrimination procedure. In the first experiment, responses during the intermediate stimulus value were never reinforced, while responses during stimuli on either end of the continuum were reinforced periodically. In the second experiment, responses during stimuli from one end of the continuum were never reinforced, while responses during stimuli from the other end of the continuum were reinforced periodically. Results from both experiments show that discrimination between unchanged positive and negative stimulus values is a function of the range over which the total stimulus set varies. These range effects are comparable to effects found in absolute judgment tasks in human and animal psychophysics. In addition, the range effects reported here are not due to channel capacity, but may depend instead on variability in judgment criteria.

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Animals Columbidae Conditioning, Operant Discrimination Learning Humans Light Male Models, Psychological Psychophysics Reinforcement, Psychology Time Perception Visual Perception Comparative Study Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

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J M Hinson, G R Lockhead. 1986. Range effects in successive discrimination.. https://pubmed.ncbi.nlm.nih.gov/3734695/

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