Millie is using a behavior checklist strategy as well as a prompted praise strategy when working with her second grade behavior disordered student, Kent. She uses both strategies within the same day going back and forth randomly between the two approaches, while recording his on task behavior.
-In this study, which of the following validity threats does Millie control?
A) Order effects.
B) Selection effects.
C) Treatment effects.
D) History effects.

Question

Quizplus · Accepted Answer

By randomly switching between the behavior checklist and prompted praise strategies, Millie controls the order effects validity threat, as she is not consistently using one strategy before the other. However, she may still face other validity threats, such as selection effects or history effects.

Millie Is Using a Behavior Checklist Strategy as Well as a Prompted