Consider the study we used as an example for a two-way between-groups ANOVA in this chapter. Older and younger people were randomly assigned to hear either one repetition or three repetitions of a health-related myth, accompanied by the accurate information that “busted” the myth.

a. Explain why this study would be analyzed with a between-groups ANOVA.

b. How could this study be redesigned to use a within-groups ANOVA?