Question

In an experiment to test whether sleep deprivation affected student exam grades, a group of students (Group A) slept their normal amount before coming to the exam. The other group (Group B) only had 2 hours of sleep. Group B represents the ______.
A. experimental group
B. hypothesis
C. variable
D. control group

Answer 1

The correct answer is A. Experimental group

Explanation:

In experiments, the experimental group refers to the group of subjects that receives special treatment or in which the scientist or researcher intervenes. This is the opposite of a control group that does not receive treatment and therefore, it is used as a reference to measure the effect of the treatment.

This implies, in the experiment presented Group A is the control group as they do not have special treatment because they sleep normally and Group B is the experimental group as the researcher modifies their sleep time and reduces it two hours which means in this group there is a treatment or intervention.