An Investigator Wanted to See Whether Packaging Information Affects the Way

Multiple Choice

An investigator wanted to see whether packaging information affects the way teenagers rate the effectiveness of soap.The same soap was put in three packages: (a) a pink wrapper that says "For Keeping Your Skin Baby Soft";(b) a red wrapper that says "For Eliminating Acne";and (c) a white wrapper that says nothing.Each teenager was asked to rub his or her face with dirt and wash with soap A;each teenager then followed the same procedure for soaps B and then C.The time it took to get the face clean was recorded each time.What type of design is this?

A) Independent groups
B) Repeated measures
C) Short-term longitudinal
D) Reversal