The question of how much improvement in a treatment group is enough
A) cannot be settled empirically.
B) should be determined after examining the results.
C) is based on internal validity considerations.
D) is an irrelevant issue.

Question

Quizplus · Accepted Answer

The question of how much improvement in a treatment group is enough cannot be settled empirically because it involves value judgments about what constitutes meaningful or significant improvement, which go beyond mere empirical evidence.

The Question of How Much Improvement in a Treatment Group