Dr.Black wants to study how caffeine consumption affects memory.He gives his sample a memory test to establish their baseline abilities and then has them drink several caffeinated beverages,followed by another memory test.What type of research design is Dr.Black using?
A)Within-subject design
B)Correlational design
C)Between-subject design
D)Randomized design

Question

Quizplus · Accepted Answer

Dr. Black is using a within-subject design as he is testing the same group of individuals twice, once before the caffeine consumption and once after the consumption. This type of design ensures that any changes observed in the memory test are due to caffeine consumption and not individual differences between the participants.

DrBlack Wants to Study How Caffeine Consumption Affects Memory