We are evaluating a method of therapy for extremely underweight adolescent girls. If we weighed our subjects at the beginning and end of therapy, a difference in weight could mean
A) that our therapy worked.
B) that people gain weight over time regardless of what we do.
C) that our scales changed due to repeated use.
D) all of the above

Question

Quizplus · Accepted Answer

A difference in weight could be attributed to the therapy's effectiveness, natural weight gain over time, or even a change in the scales' accuracy due to repeated use. All these factors could potentially explain the observed weight difference.

We Are Evaluating a Method of Therapy for Extremely Underweight