Describe the advantages and disadvantages of quasi-experiments?

Complete the assignment using APA paper format and APA formatted references/citations throughout paper

 Describe the advantages and disadvantages of quasi-experiments?

  1. Using the following reference, answer the following questions:Jackson, S. (2012). Research methods and statistics: A critical thinking approach.Belmont, CA Wadsworth Cengage Learning.

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2)     A psychology professor is interested in whether implementing weekly quizzes improves student learning. She decides to use weekly quizzes in one section of her introductory psychology class and not to use them in another section of the same course. Which type of quasi-experimental design do you recommend for this study?

 

4)  Identify some possible confounds in each of the studies you outlined in your answer to exercise 2.

 

6)   Give three reasons a researcher might choose to use a single-case design.

                                   

8)   How does a multiple-baseline design differ from a reversal design?

Using references from the recommended list and any additional resources, answer the following questions:

  1. Describe the advantages and disadvantages of quasi-experiments? What is the fundamental weakness of a quasi-experimental design? Why is it a weakness? Does its weakness always matter?
  2. If you randomly assign participants to groups, can you assume the groups are equivalent at the beginning of the study? At the end? Why or why not? If you cannot assume equivalence at either end, what can you do? Please explain.
  3. Explain and give examples of how the particular outcomes of a study can suggest if a particular threat is likely to have been present.
  4. Describe each of the following types of designs, explain its logic, and why the design does or does not address the selection threats discussed in Chapter 7 of Trochim and Donnelly (2006):
    1. Non-equivalent control group pretest only
    2. Non-equivalent control group pretest/posttest
    3. Cross-sectional
    4. Regression-Discontinuity
  5. Why are quasi-experimental designs used more often than experimental designs?
  6. One conclusion you might reach (hint) after completing the readings for this assignment is that there are no bad designs, only bad design choices (and implementations). State a research question for which a single-group post-test only design can yield relatively unambiguous findings.

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