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A research agenda for licensing and certification testing validation studies.

T M Haladyna
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Abstract

The set of articles appearing in this issue of Evaluation & the Health Professions provides an in-depth examination of the validation process for licensing and certification test score decisions. The winter 1990 issue of Educational Measurement: Issues and Practice also contains an excellent set of articles about licensing and certification tests. These special editions are much needed because these kinds of testing programs are increasing in numbers and aim to ensure public safety, promote growth of professions, and positively affect the careers of persons dedicated to serving in these professions. This article will comment on issues raised by the authors of these articles. But before doing this, a context is described that affects these issues.

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CertificationData Interpretation, StatisticalEducational MeasurementHealth OccupationsLicensureReproducibility of ResultsResearchUnited StatesJournal ArticleReview

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T M Haladyna. 1994. A research agenda for licensing and certification testing validation studies.. https://doi.org/10.1177/016327879401700208

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Assessing the American Board of Orthodontics objective grading system: digital vs plaster dental casts.

INTRODUCTION: The purposes of this study were to determine whether the American Board of Orthodontics objective grading system (ABO OGS) can be assessed accurately from digital dental casts and whether there are statistical differences between digital and plaster dental casts in scoring the ABO OGS. METHODS: Thirty posttreatment plaster dental casts were selected and scanned by OrthoCAD (Cadent, Carlstadt, NJ) to produce 30 corresponding digital dental casts. The plaster and digital casts were compared by using the criteria of the ABO OGS. Because the data were ordinal, a nonparametic statistical analysis was used. RESULTS: The Wilcoxon test for paired samples showed significant differences between the plaster and digital casts for occlusal contacts, occlusal relationships, and total scores (P <.05). No significant differences were found for alignment, marginal ridges, overjet, and interproximal contacts. Buccolingual inclination was not included in this study because of inability to perform proper measurements with the OrthoCAD program. Mean differences of points deducted ranged from .03 point for marginal ridges to 5.07 points for the total score. The variable with the most points deducted related to occlusal relationships, and the fewest points were deducted for interproximal contacts. CONCLUSIONS: Based on this study, the current OrthoCAD program (version 2.2) was not adequate for scoring all parameters as required by the ABO OGS.

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