Identify situations in which a betweensubjects design would

Identify situations in which a between-subjects design would be superior to a within-subjects design.

Solution

Between subjects designs are invaluable in certain situations, and give researchers the opportunity to conduct an experiment with very little contamination by extraneous factors. This type of design is often called an independent measures design because every participant is only subjected to a single treatment. This lowers the chances of participants suffering boredom after a long series of tests or, alternatively, becoming more accomplished through practice and experience, skewing the results.