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 (tă-kĭs′tə-skōp′, tə-)
An apparatus that projects a series of images onto a screen at rapid speed to test visual perception, memory, and learning.

[Greek takhistos, superlative of takhus, swift + -scope.]

ta·chis′to·scop′ic (-skŏp′ĭk) adj.


(Physiology) an instrument, used mainly in experiments on perception and memory, for displaying visual images for very brief intervals, usually a fraction of a second
[C20: from Greek takhistos swiftest (see tachy-) + -scope]
tachistoscopic adj
taˌchistoˈscopically adv


(təˈkɪs təˌskoʊp)

an apparatus that exposes visual stimuli, as words, very briefly, used to test perception or to increase reading speed.
[1905–10; < Greek táchist(os), superlative of tachýs swift + -o- + scope]
ta•chis`to•scop′ic (-ˈskɒp ɪk) adj.


an instrument for exposing pictures and other visual stimuli for very brief periods, used in psychological testing and various teaching methods.
See also: Instruments
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tachistoscope - scientific instrument used by psychologiststachistoscope - scientific instrument used by psychologists; presents visual stimuli for brief exposures
scientific instrument - an instrument used by scientists
References in periodicals archive ?
In a fascinating discussion of the applications of tachistoscopic technology outside of the world of advertising, Acland describes the use of speed-reading tachistoscopes in schools and reproduces a 1966 ad for the "Keystone Tachistoscope," claiming that "Thousands of Schools are Teaching MORE with LESS effort" by using the device (p.
The children in the middle and lowest performing groups practiced using real and nonsense story words on hand-made tachistoscopes.
We have survived programmed materials, Evelyn Wood, tachistoscopes, behavioral objectives, foreign language labs, modality testing, neurological patterning, reality therapy, transactional analysis, Madeline Hunter, the Initial Teaching Alphabet, discovery learning in science, new math, effective school programs, open schools, ungraded schools, behavior modification, diagnostic-prescriptive teaching, mastery learning, private contracting, merit pay, master teachers, magnet schools, mini-courses, team teaching, and many other educational "innovations" and "innovators.