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The Diabetes Educator

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Evaluation & the Health Professions
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Content Validity Revisited

Transforming Job Analysis Data into Test Specifications

Mary E. Lunz

John A. Stahl

Board of Registry, American Society of Clinical Pathologists

Karen James

Central Dupage Hospital

This article describes a process for linking job analysis data to test specifications. Rasch rating scale analysis is used to order the ratings of importance assigned to task and content items by practicing laboratory managers. This ordering produces variables representing the range of task and content items from most to least important. The variables also provide an objective frame of reference for review of the data by the experts. The Rasch calibrations for each task and content item are transformed to percentages based on useful limits. From the transformed percentages, test specifications reflecting practice patterns in the field of laboratory management are developed.

Evaluation & the Health Professions, Vol. 12, No. 2, 192-206 (1989)
DOI: 10.1177/016327878901200205
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