A Researcher Is Studying the Effects of Saturated Fats on Cholesterol

Multiple Choice

A researcher is studying the effects of saturated fats on cholesterol level. She randomly assigns a group of participants to one of four groups (no saturated fat, low saturated fat, medium saturated fat, high saturated fat) . The participants are on their specified diets for one month. The researcher measures cholesterol levels at the beginning and end of the study. What type of design classification is this?

A) Between-groups design
B) Within-subjects design
C) Mixed design
D) Associational design