Accession Number : AD0749334

Title :   Accuracy of the Mean Threshold in the Psychophysical Method of Limits.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA CREW SYSTEMS DEPT

Personal Author(s) : Herrick,Robert M.

Report Date : 21 APR 1972

Pagination or Media Count : 14

Abstract : Human factors specialists and engineers frequently employ the psychophysical method of limits to evaluate experimental variables in sensory areas. Textbooks list rules for data collection and data treatment with the method of limits which vary somewhat, but have considerable consistency. Analysis indicates, however, that most of the rules are arbitrary, and that they lead to an inefficient use of resources. The present report analyzes the problem of step size, i.e., the spacing between successive stimuli, in the method of limits. (Author)

Descriptors :   (*PERCEPTION, THRESHOLDS(PHYSIOLOGY)), (*PSYCHOPHYSICS, STATISTICAL PROCESSES), PSYCHOLOGICAL TESTS, STATISTICAL DISTRIBUTIONS, MATHEMATICAL MODELS, ERRORS

Subject Categories : Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE