Costanza conducts a true experiment examining the effect of energy drinks on work performance. As such, you know that her experiment has _____ internal validity.
A) no
B) low
C) adequate
D) too much

Question

Quizplus · Accepted Answer

A true experiment is designed to establish cause and effect relationships between variables. Internal validity refers to the extent to which a study establishes a causal relationship between the independent variable and the dependent variable, and eliminates alternative explanations for the results. Since Costanza conducts a true experiment, she is more likely to have adequate internal validity.

Costanza Conducts a True Experiment Examining the Effect of Energy