Which of the following is NOT essential in a well-designed study?
A) use of naturally occurring groups
B) comparison of two or more groups
C) random assignment to treatment groups
D) a post-test

Question

Quizplus · Accepted Answer

A well-designed study does not necessarily require the use of naturally occurring groups; it can involve groups created through random assignment or other methods.

Which of the Following Is NOT Essential in a Well-Designed