Performance on concurrent variable-interval extinction schedules

Article Abstract:

An study was done to measure performance on concurrent variable-interval (VI) extinction schedules wherein the VI reinforcement rate was changed extensively in varied conditions. Results show that behavior allocation on concurrent VI extinction schedules was not limited to the VI alternative wherein the stimuli that signaled alternatives were mildly discriminable. No significant trends in behavior allocation occurred across reinforcer rates after extended training, such that it is argued that the generalized matching law be replaced by the contingency-discriminability model.

Reinforcement (Psychology), Response consistency

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A quantitative analysis of extreme choice

Article Abstract:

Experiments carried out on trained homing pigeons indicate that choice sensitivity varies in proportion to the contextual environment. The generalized matching relation can be used only if sensitivity is taken as a variable. In the generalized matching law, behavior ratios are a power function of reinforcer ratios. A contingency-discriminability model that can take care of deviations of choice measurements that are observed explains the results of the experiments in a better manner.

Analysis, Conditioned response, Conditioned responses, Homing pigeons

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The control of choice by its consequences

Article Abstract:

Research using concurrent variable-interval schedules shows that reinforcement can impact choice according to reinforcement rate. Alternating instrumental and contingent phases were implemented in pigeon training experiments using color-coded keys. Relative frequencies of left key responses were established and analysed. The experimental procedure is described in a diagram.

Behaviorism (Psychology), Behaviorism

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