Dr. Smith is designing a study in which 50 people will be administered an experimental drug and 50 people will be administered a placebo. He will make sure that all potential respondents are equally likely to end up in either the experimental or control group. What is this practice called?
A) selective assignment
B) random assignment
C) determined assignment
D) confounding assignment

Question

Quizplus · Accepted Answer

Random assignment ensures that all potential respondents have an equal chance of being assigned to either the experimental or control group, which minimizes any potential confounding variables and increases the internal validity of the study.

Dr Smith Is Designing a Study in Which 50 People