In a study of the effects of alcohol, a researcher compares reaction time of people who had 8 drinks against those who had 6 drinks, 4 drinks, 2 drinks, or 0 drinks.How many experimental groups are there in this design?
A) 2
B) 4
C) 5
D) 8

Question

Quizplus · Accepted Answer

There are 5 conditions being tested (0 drinks, 2 drinks, 4 drinks, 6 drinks, and 8 drinks), therefore there are 5 experimental groups in this design. Choice B is the correct answer.

In a Study of the Effects of Alcohol, a Researcher