title: A comprehensive approach to the interpretation of difference scores.
abstract: A comprehensive approach to the interpretation of difference scores is presented. Formulas for the test of statistical significance between two test scores, computed by a confidence interval, and for the calculation of the probabilities for the power of the statistical test, underinterpretation, overinterpretation, and misinterpretation are provided. Definitions and examples of their use in score interpretation are provided.
authors.affiliation: California State University at Long Beach, Long Beach, California, USA. richc446@aol.com
authors.forename: Richard A
authors.initials: RA
authors.lastname: Charter
authors.forename: Leonard S
authors.initials: LS
authors.lastname: Feldt
mesh_terms: D016001:Confidence Intervals; D003627:Data Interpretation, Statistical; D005260:Female; D006801:Humans; D008297:Male; D015233:Models, Statistical; D009483:Neuropsychological Tests; D011336:Probability