Author Question: Identify and describe the four advantages of repeated measures designs over nonrepeated measures. ... (Read 98 times)

jc611

  • Hero Member
  • *****
  • Posts: 552
Identify and describe the four advantages of repeated measures designs over nonrepeated measures.
 
  What will be an ideal response?

Question 2

Explain why repeated measures designs can be more useful than nonrepeated measures designs when participants provide subjective ratings. Why are objective measures less problematic in nonrepeated designs?
 
  What will be an ideal response?



kalskdjl1212

  • Sr. Member
  • ****
  • Posts: 353
Answer to Question 1

(a) There is greater efficiency in data collection because we need fewer participants and we may also need to spend less time collecting data if two or more conditions can be included in a single testing session that may not increase in length that much with the additions.
(b) You can increase the validity of the data, particularly in the case of subjective judgments by participants. With repeated measures, the same person brings the same perspective in the different conditions.
(c) If the availability of participants with particular characteristics is limited, repeated measures can be useful because you don't have to worry about going out to find more scarce people.
(d) With the same people in each condition, there will be a reduction in measurement error because each person serves as his or her own control. Thus, individual differences become less of a problem across groups because you can compare a person in condition one with his or her performance in condition two.

Answer to Question 2

When participants engage in subjective ratings, as on a Likert-type scale, each person brings his or her own perspective to the judgment task. There is no guarantee that two different people will have the same subjective rating perspective. With objective measures, we rely less on personal perspectives and instead focus on more externally verifiable behaviors.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

For a complete list of videos, visit our video library