What Other Items Do You Think Need to Be Included in Dr. Zak’s Domain Sampling Essay Example
What Other Items Do You Think Need to Be Included in Dr. Zak’s Domain Sampling Essay Example

What Other Items Do You Think Need to Be Included in Dr. Zak’s Domain Sampling Essay Example

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  • Pages: 2 (383 words)
  • Published: May 3, 2018
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Make sure that the name of every participant is listed in the team assignment. One member should post it in the "Assignments" section.

Then, submit your Certificate of Originality to the Assignments link. You can answer questions on this form; there is no need to format it into a paper. There is no requirement to upload a plagiarism report for this assignment.

Instructions

Read the provided case study.

The following is a case study that offers information to address the follow-up questions. Questions 1 and 2 necessitate brief answers, while the remaining questions should be responded to with a 150 to 200-word response. Case Study: Dr. Zak developed a test for measuring depression.

100 university students were sampled to take Zak's Miraculous Test of Depression. The group consisted of 30 men and 70 women, with f

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our African American individuals, six Hispanic individuals, and one Asian individual.

1. I feel depressed: Yes No
2. I have been sad for the last two weeks: Yes No
3. I have seen changes in my eating and sleeping: Yes No
4. I don’t feel that life is going to get better: Yes No
5. I feel happy most of the day: Yes No

Yes = 1; No = 0
The mean on this test is 3.

The average score on the test is 5 with a standard deviation of 5. Here are some follow-up questions:

  1. Sally's score on this test is 1.5. How many standard deviations is Sally from the mean? Show your calculations and answer in a complete sentence.
  2. Billy scores
  3. What is Billy's standard score? Show your calculations and answer in a complete sentence.
  4. What scale of measurement is Dr. Zak using? Do you
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think Dr. Zak's choice of scaling is appropriate? Why or why not? What are your suggestions?

  • Do you think Dr.
  • Zak needs to determine if he has a suitable sample for norming his test. I recommend considering the following:

  • What other elements should be included in Dr. Zak's domain sampling?
  • How can modifications enhance this test? Provide justifications based on psychometric principles from the textbook or other course materials.
  • In addition, Dr. Zak administered the Beck Depression Inventory (BDI) to his students and found a correlation between his test and the BDI of r =.
  • 14. Analyze the correlation to understand the relationship between these two instruments and what it reveals about Dr. Zak's test.

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