Accession Number : AD0629677

Title :   A NOTE ON SOME ALTERNATIVE MODELS FOR RESPONSE BIAS CHANGES DURING FORCED-CHOICE DETECTION EXPERIMENTS.

Descriptive Note : Technical rept.,

Corporate Author : PSYCHOPHYSICS LAB UNIV OF WASHINGTON SEATTLE

Personal Author(s) : Ronken,Don A.

Report Date : 01 NOV 1965

Pagination or Media Count : 13

Abstract : Several variants of a learning model for forced-choice detection experiments (Atkinson and Kinchla, 1965) may be produced by making various reasonable assumptions regarding which events are effective in producing response bias changes. Atkinson and Kinchla assumed the bias changed according to a single parameter stochastic learning mechanism, such changes occurring only when no signal was detected. An alternative formulation uses two learning parameters and postulates the bias changes on every trial, but at different rates, according to whether or not the signal is detected. This two-parameter bias model was applied to the original data (Atkinson and Kinchla, 1965), and produced numerical estimates of the parameters which confirm the conjecture that the bias changes principally during non-detection trials. In addition, the parameter estimates indicate that the relative effectiveness of information feedback is determined by its relative frequency of occurrence, an interpretation which was not possible from the single-parameter model. (Author)

Descriptors :   (*DECISION MAKING, DETECTION), (*DETECTION, DECISION MAKING), (*LEARNING, MATHEMATICAL MODELS), (*REACTION(PSYCHOLOGY), MATHEMATICAL PREDICTION), SIGNALS, INFORMATION THEORY, FEEDBACK, STOCHASTIC PROCESSES, PSYCHOPHYSIOLOGY

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE