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.
Showing posts with label difference scores. Show all posts
Showing posts with label difference scores. Show all posts
Tuesday, September 29, 2009
Difference Scores | Are They Okay to Use?
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