Random Sampling, Control Group and Experimental Group Discussion

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Humanities

Description

Choose 2 of the following essay questions to address. Write one paragraphs for each question response.

1. Discuss how control is achieved through participant selection and participant assignment. Discuss the practical use of the random number table in this process.

2. Discuss the advantages of using random sampling and random assignment

3. How is control achieved through experimental design? What are the objectives of a sound experimental design

4. Review Campbell and Stanley’s (1963) threats to internal validity in Chapter 7. How can each threat be controlled?

5. Identify the limitations associated with the pretest-posttest control group design.

6. What are the characteristics of a true experiment?

7. Apply a Solomon four-group design to test the effects of mentoring at-risk youth to improve their motivation to achieve. Why is the Solomon four-group design advantageous during the interpretation of results? How does this design

8. How is control related to the logic of experimentation?

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Explanation & Answer

Attached.

Running Head: SHORT PSYCH DISC

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Short Psych Disc
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SHORT PSYCH DISC

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2. Discuss the advantages of using random sampling and random assignment

Random sampling and random assignment are some of the key concepts used in
statistics and research methods. Random sampling is the method used to randomly select
individuals from a population to participate in the research study. Some of the advantages
of simple random sampling method include; it requires only a minimum knowledge of the
s...


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