In a _________, the independent variable is manipulated and existing groups of people are assigned to either the experimental or the control group.
A) natural experiment
B) quasi-experiment
C) time series experiment
D) either a or b, but not c

Question

Quizplus · Accepted Answer

In a quasi-experiment, the independent variable is manipulated and existing groups of people are assigned to either the experimental or control group. In contrast, natural experiments occur when the researcher cannot manipulate the independent variable (e.g. observing the effects of a natural disaster), and time series experiments involve repeated measures taken over time without manipulating groups. Therefore, the best choice is B.

In a _________, the Independent Variable Is Manipulated and Existing