Types of responding in a signal-detection task

Article Abstract:

The generalized matching law describes one kind of choice behavior. An experiment was designed to investigate this and the signal-detection theory. A two-alternative forced-choice procedure, used to train four pigeons to discriminate between two line orientations, showed that discriminability among stimuli failed to vary as a function of choice latency. Response-bias and discriminability measures were calculated for the overall performance and faster and slower choice responses in each condition. Larger response biases were produced for the faster responses by varying the reinforcer distributions.

Case studies, Animal experimentation

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Stimulus presentation ratios and the outcomes for correct responses in signal-detection procedures

Article Abstract:

A study was conducted to determine the effects of signal-detection theory. Three pigeons were used for the experiment. These birds were trained to peck certain keys as signalled by a magazine light. The signal-detection theory describes choice performance within a given task as a function of either discriminability or bias. Discriminability is believed to be influenced by physical differences in stimuli, while bias is believed to be influenced by personal preference.

Animal behavior

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Reinforcer control and human signal-detection performance

Article Abstract:

Research presented concerns psychophysical judgements, choice behavior and response bias in humans. An analysis of signal detection and stimulus response suggests methods for examining bias in research groups.

United States, Statistical Data Included, Human behavior, Reinforcement (Psychology), Prejudices, Prejudice

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