A study enrolled healthy adult males with no advanced musical training and taugh
ID: 3074747 • Letter: A
Question
A study enrolled healthy adult males with no advanced musical training and taught them to identify absolute pitch, a rare ability typically learned in early childhood. In a first stage, the participants were randomly assigned to valproate or a placebo. In a second stage, the conditions were reversed, so that a participant who received the placebo first took valproate for the second stage, and vice versa. This is an example of a(n) a. matched pairs or repeated measures experiment. b. completely randomized experiment. c. experiment with a block design. d. case-control observational study. A study enrolled healthy adult males with no advanced musical training and taught them to identify absolute pitch, a rare ability typically learned in early childhood. In a first stage, the participants were randomly assigned to valproate or a placebo. In a second stage, the conditions were reversed, so that a participant who received the placebo first took valproate for the second stage, and vice versa. This is an example of a(n) a. matched pairs or repeated measures experiment. b. completely randomized experiment. c. experiment with a block design. d. case-control observational study.Explanation / Answer
This is an example of
Answer a) matched pairs or repeated measures experiment.
In Repeated measures experiment, we can use the same individuals and test them on 2 or more separate occasions. The key advantage of the repeated measures design is that individual differences between participants are removed as a potential confounding variable.
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