Ally McBeal is doing a study. She is interested in the effects of gender, ethnicity, and diet on weight loss. Ethnicity has 5 categories. Every participant receives a diet of 1200 calories/day, first with a low fat menu for one week and then with a no fat menu for another week. What type of design is this? A) Single-factor repeated-measures design with 3 levels B) 2 × 5 × 2 factorial design C) 2 × 2 × 2 factorial design D) 2 × 5 × 2 factorial design with repeated measures on all factors E) 2 × 5 × 2 factorial design with repeated measures on the 3^rd factor

Question

Quizplus · Accepted Answer

This study involves three factors: gender (2 categories), ethnicity (5 categories), and diet (2 types: low fat and no fat), making it a 2 × 5 × 2 design. The repeated measures on the third factor (diet) indicate that the same participants are exposed to both levels of the diet factor, hence "with repeated measures on the third factor."

Ally McBeal Is Doing a Study