Come up with a research example (not in the text) of when it would be appropriat
ID: 3066669 • Letter: C
Question
Come up with a research example (not in the text) of when it would be appropriate to use a repeated-measures design. Describe the study. Come up with a research example (not in the text) of when it would be appropriate to use a matched-pairs design. Describe the study. Come up with a research example (not in the text) of when it would be appropriate to use a pretest/posttest design. Describe the study. Imagine that you needed 10 pairs of scores in your matched-pairs study. How many different individuals would you need? Imagine that you needed 10 pairs of scores in your repeated-measures study. How many different individuals would you need? What is one of the benefits of choosing a related-samples design?
Explanation / Answer
Repeated measure Design
Suppose we want to study the effects of three drug on the rat's activity by recording their behavior in terms of agressive or calm. So we test each drug on a sample size of n rats and record their activity. In this example we examine the same rat with each drug so this is called repeated measure design study. Hence the benefit of the study is that we require a small sample size in experiments.
To get 10 pairs of scores in our repeated study we would need at least 10 individual to participate in our study, Ech individual will participate for each test score
Matched-Pair Design
Suppose we want to compare new product of coffee with an usual one in a coffeehouse hence we choose an random select the subjects and let them taste both the product and recorded their response about what they will prefer next time. Here each subject participate for both the treatment hence it is a matched pair design experiment. The pupose of the study is to reduce the accidental bias or error which can not be avoided in completely randomized design.
To get 10 pairs of scores in matched-pairs study we would need 10 individual to participate in our study, Ech individual will participate for both test score
Pretest/Posttest Design
Suppose we want to test the effect of a drug on a sample of patients so we examine the health condition before the medication and after the medication. Here we observe the measurement before and after the test hence it is called a pretest/posttest measure design. This design help us to know whether the treatment has a effect that we are looking at.
The Related Samples Design helps to reduce the within group variances.