This post discusses how to perform a basic reliability analysis of a multiple choice test.
Showing posts with label validity. Show all posts
Showing posts with label validity. Show all posts
Monday, October 5, 2009
Tuesday, September 29, 2009
Difference Scores | Are They Okay to Use?
A difference score is a variable that has been formed by subtracting one variable from another.
i.e., DIFFSCORE = VAR1 - VAR2.
Some researchers have heard that difference scores are 'bad'. This post discusses some of the issues, provides some additional references, and discusses calculating reliability of difference scores.
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