psychophysics
noun
psy·cho·phys·ics ˌsī-kō-ˈfi-ziks 
plural in form but singular in construction
: a branch of psychology concerned with the effect of physical processes (such as intensity of stimulation) on the mental processes of an organism
psychophysicist
ˌsī-kō-ˈfi-zə-sist
noun -ˈfiz-sist
Word History
Etymology
International Scientific Vocabulary
First Known Use
1875, in the meaning defined above
Medical Definition
psychophysics
noun, plural in form but singular in construction
psy·cho·phys·ics ˌsī-kō-ˈfiz-iks
: a branch of psychology concerned with the effect of physical processes (as intensity of stimulation) on the mental processes and especially sensations of an organism