A Researcher Is Interested in the Level of Employees' Understanding

Multiple Choice

A researcher is interested in the level of employees' understanding of health benefit options. He is interested in how the amount of time spent looking at the brochure for each option influences understanding, so he's using a device that controls the amount of time a subject is exposed to the brochure. This device is called a _____.

A) pupilometer
B) psychgalvanometer
C) tachistoscope
D) rotoscope