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Sample Size in Validity Studies

I am struggling with this portion of my assignment, please provide guidance.

Using the attached article, provide an overview of the contents and apply the concepts to the Job Satisfaction survey. It is important to cover the concept of the techniques used to estimate sample size.

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Interesting and somewhat complex assignment indeed. I hope this helps and take care.

RESPONSE:

Hi,

Let's look a little closer at this somewhat complex assignment:

1. I am struggling with this portion of my assignment, please provide guidance. Using the attached article, provide an overview of the contents and apply the concepts to the Job Satisfaction survey. It is important to cover the concept of the techniques used to estimate sample size. See attachments

It seems complex, but broken down it is fairly straightforward. It is asking you to summarize the article first, and then apply the concepts (e.g., sample size; effect size - which is considered the power of the test; and variability - which is shown by the size of the confidence interval, with the smaller the confidence interval, the less variability, and the more generalizable to the population) to the Job Satisfaction survey. The article explains how you need to consider both the desired effect size (e.g., power of the test = effect size; medium effect size = .30) and the variability (the larger the sample, the less variability) based on the generalizable theory.

Let's take a closer look then:

Response:

Let's look at the following article "Sample size in validity studies of personnel selection" (Salgado, 1998) (uploaded BELOW for easy referencing):

In general, validity studies measure the extent to which a diagnostic test or other measure (job satisfaction survey, etc.) actually does what it is supposed to do. More precisely, validity is determined by measuring how well a test performs against the gold or criterion standard (1)
In this study, the authors are concerned ...

Solution Summary

Using the attached article, this solution overviews the contents e.g.the techniques used to estimate sample size and applies the concepts to the Job Satisfaction survey.

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