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psychophysics definitions

WordNet (r) 3.0 (2005)

n
1: the branch of psychology concerned with quantitative relations between physical stimuli and their psychological effects

Merriam Webster's

noun plural but singular in construction Etymology: International Scientific Vocabulary Date: 1878 a branch of psychology concerned with the effect of physical processes (as intensity of stimulation) on the mental processes of an organism psychophysicist noun

Britannica Concise

Branch of psychology concerned with the effect of physical stimuli (such as sound waves) on mental processes. Psychophysics was established by G. Fechner in the mid-19th cent., and since then its central inquiry has remained the quantitative relation between stimulus and sensation. A key tenet has been Weber's law. Psychophysical methods are used today in vision research and audiology, psychological testing, and commercial product comparisons (e.g., tobacco, perfume, and liquor).

Oxford Reference Dictionary

n. the science of the relation between the mind and the body. Derivatives: psychophysical adj.

Webster's 1913 Dictionary

Psychophysics Psy`cho*phys"ics, n. [Psycho- + physics.] The science of the connection between nerve action and consciousness; the science which treats of the relations of the psychical and physical in their conjoint operation in man; the doctrine of the relation of function or dependence between body and soul.



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