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Author Question: A study is internally valid to the extent that: A) All alternative explanations of the results ... (Read 109 times)

aabwk4

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on: Jul 8, 2018
A study is internally valid to the extent that:
 
  A) All alternative explanations of the results can be ruled out
  B) An experimental design was used
  C) Intervention fidelity was maintained
  D) A strong counterfactual was established

Question 2

A researcher at a school of nursing decides to investigate the correlation between a pre- admission HESI examination, high school GPA, and SAT scores as a predictor of success in completing first year study.
 
  These admission variables will be reviewed again with grades achieved after the first year is completed. This use of data is known as which of the following? A) Construct validation
  B) Known-groups technique
  C) Concurrent validity
  D) Predictive validity


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mrphibs

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Reply #1 on: Jul 8, 2018
Answer to Question 1

A

Answer to Question 2

D
Feedback:
Predictive validity is an instrument's ability to differentiate between people's performances on a future criterion. When a researcher correlates applicant's pre-admission test, high school grades, and SAT score with subsequent grade point averages, predictive validity is being evaluated. Construct validity is a key criterion for assessing research quality, and construct validity has most often been linked to measurement. Construct validity in measurement concerns these questions: What is this instrument really measuring? and Does it validly measure the abstract concept of interest? One approach to construct validation is the known-groups technique. In this procedure, groups that are expected to differ on the target attribute are administered the instrument, and group scores are compared. Concurrent validity is an instrument's ability to distinguish among people who differ presently on a criterion.


aabwk4

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Reply #2 on: Jul 8, 2018
Thank you :)


mrphibs

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Reply #3 on: Jul 8, 2018
Happy to help you


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