Kari wants to make sure that all students in her study receive both of the treatments she is testing. To ensure all subjects receive both interventions, which of the following designs should Kari consider?
A) Time-series design
B) Solomon four-group design
C) Counterbalanced design
D) Nonequivalent groups control group design

Question

Quizplus · Accepted Answer

A counterbalanced design is the best choice because it involves multiple groups of participants and all groups receive both treatments, but in a different order. This eliminates the concern of order effects and ensures that all participants receive both interventions.

Kari Wants to Make Sure That All Students in Her