Tachistoscopy

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Tachistoscopy ( ancient Greek τάχιστος tachistos , German 'as fast as possible' and σκοπεῖν skopein , German ' to look at' ) is a test method from perception psychology .

The subject is shown visual stimuli, for example pictures or words, for short periods of time. Because the presentation times are precisely controlled, the visual perception can be examined. A wide variety of questions can be answered here.

Tachistoscopy entered the public consciousness when it was claimed in the 1970s that companies would insert their logo between the television images for a very short time in order to "unconsciously" influence television viewers. Various scientific and popular scientific investigations were then carried out to confirm or refute this theory. Today we know from research on pre-attentive perception that this procedure would hardly work.

In tachistoscopy, the tachistoscope , a special device, can be used or a darkened stage is used on which the product to be tested is illuminated for a short time. The tests are now also carried out directly on the computer screen .

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