In a test of the effects of air pollution,groups of students performed a reaction-time task in a polluted or an unpolluted room. To what condition were students in the unpolluted room exposed?

Question

Quizplus · Accepted Answer

The students in the unpolluted room were the control group, which is the group used as a basis of comparison with the experimental group (students in the polluted room). The control group is not exposed to the variable being tested (air pollution in this case) and serves as a standard of comparison to determine the effect of the variable.

In a Test of the Effects of Air Pollution,groups of Students