The main difference between a quasi-experiment and an experiment is that the independent variable:
A) is manipulated in an experiment
B) is manipulated in a quasi-experiment
C) has 3 levels in an experiment
D) cannot be measured in a quasi-experiment

Question

Quizplus · Accepted Answer

In an experiment, the independent variable is manipulated by the researcher, whereas in a quasi-experiment, the researcher does not have full control over the independent variable. Therefore, the correct answer is A. Option B is incorrect because the independent variable is not manipulated in a quasi-experiment. Option C is incorrect because the number of levels of an independent variable can vary in experiments, and option D is incorrect because the independent variable can be measured in both experiments and quasi-experiments.

The Main Difference Between a Quasi-Experiment and an Experiment Is