How we choose to use a term depends on what we want to do with it. If "validity" is to be used to support a score interpretation, validation would require an analysis of the plausibility of that interpretation. If validity is to be used to support score uses, validation would require an analysis of the appropriateness of the proposed…

Developing good criterion measures of professional performance is difficult. If criterion-related validity evidence for certification requirements could not be generalized beyond the specific context in which it was obtained, gathering that evidence would probably not be worth the effort. This paper examines two possible approaches to the…

The literature on validity provides much more guidance on how to collect various kinds of validity evidence than it does on which kinds of evidence to collect in specific cases. An argument-based approach to validation redresses the balance by linking the kinds of evidence needed to validate a test-score interpretation to the details of the…

Possible interpretive arguments for licensure and certification test scores are examined, and evidence to support each type of argument is analyzed. Particular attention is given to a competency-based argument that involves a sequence of inferences from test scores to statements about competence and then to conclusions about expected performance.…

A proposed model for the validity of measures of professional competence treats validation as the evaluation of inferences drawn from test scores, focusing on evaluation, generalization, and extrapolation. The model is used to indicate strengths and weaknesses of assessments of professional competence: observations of performance, simulations, and…