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Test standardization | Psychology homework help

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This is a Masters paper, 

APA format, 

4 sources. 

 

QUESTION 1

Test Standardization
View the rubric for this discussion assignment.
Discussion instructions:
1. Describe the basic characteristics of a standardized test and norms.
2. A test measuring basic math skills in adults is normally distributed, with mean = 20 and standard deviation = 7. 
Calculate the z score and T score for each of the following test scores:
o – X = 11
o – X = 18
o – X = 24
o – X = 32
3. What is the usefulness of transforming raw scores to z scores or T scores? What do these numbers tell us?
4. How would we go about determining percentile ranks for a score obtained on a standardized test? What information would we need to know? What would the percentile rank tell us?
Be sure to put information in your own words and cite accordingly. Respond to at least two of your classmates’ postings by Day 7.

Main Source:
Aiken, L. R. & Groth-Marnat, G. (2006). Psychological testing and assessment,(12th ed.).Boston, MA: Allyn & Bacon. ISBN: 0205457428.

QUESTION 2
Reliability and Validity
View the rubric for this discussion assignment.
Discussion instructions:
In your own words, describe the basic concepts and types of reliability and validity that apply to tests. Include explanations for why a test may be high or low in each of these areas. How might a researcher developing a test increase the reliability and validity of that test? Provide at least three suggestions for increasing reliability and three suggestions for increasing validity. Be sure to put information in your own words and cite accordingly. Respond to at least two of your classmates’ postings by Day 7.

Main Source:
Aiken, L. R. & Groth-Marnat, G. (2006). Psychological testing and assessment,(12th ed.).Boston, MA: Allyn & Bacon. ISBN: 0205457428.

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