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Assessing a Critical Aspect of Construct Continuity When Test Specifications Change or Test Forms Deviate from Specifications


Jinghua Liu, Senior Psychometrician and Psychometric Manager, Educational Testing Service, Mail Stop 06-P, 660 Rosedale Road, Princeton, NJ 08541; Neil J. Dorans, Distinguished Presidential Appointee, Educational Testing Service, Princeton, NJ 08541;


We make a distinction between two types of test changes: inevitable deviations from specifications versus planned modifications of specifications. We describe how score equity assessment (SEA) can be used as a tool to assess a critical aspect of construct continuity, the equivalence of scores, whenever planned changes are introduced to testing programs. We also report on how SEA can be used as a quality control check to evaluate whether tests developed to a static set of specifications remain within acceptable tolerance levels with respect to equatability.

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