A tachistoscope flashes an ad to a subject with an exposure interval that may range from less than one hundredth of a second to several seconds and asks the respondent to describe what s/he recalls.

Question

Quizplus · Accepted Answer

This is a correct description of how a tachistoscope works. It rapidly displays an image or text for a short period of time, and the subject is asked to recall what they saw.

A Tachistoscope Flashes an Ad to a Subject with an Exposure