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Just a quick pedantic point, the current language recommended in psychometrics is not to refer to proving that a test has validity but instead looking for sources of evidence for validity in various ways. One such source of validity evidence is from convergence with tests of similar constructs. In this case, evidence favoring construct validity in your ...


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As long as the test is the same and the only difference is how the questions are presented and how the answers are entered, this is not convergent evidence. Otherwise any assessment can yield convergent evidence if I can administer it using pen and paper, then pencil and paper, then chalk and blackboard, then crayon and wall, etc, but the content is exactly ...


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The topic is old, but the questions interesting, so I would like to include some of available information regarding some questions. Statistical requirements/assumptions underlying Omega: Omega and omega hierarchical are based on parameter estimates (i.e., estimates of factor loadings and factor variances) that are derived for a certain CFA model. Hence, two ...


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