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Reid, Christine A.; Kolakowsky-Hayner, Stephanie A.; Lewis, Allen N.; Armstrong, Amy J. – Rehabilitation Counseling Bulletin, 2007
Item response theory (IRT) methodology is introduced as a tool for improving assessment instruments used with people who have disabilities. Need for this approach in rehabilitation is emphasized; differences between IRT and classical test theory are clarified. Concepts essential to understanding IRT are defined, necessary data assumptions are…
Descriptors: Psychometrics, Methods, Item Response Theory, Aptitude Tests
McLaughlin, Kenneth F. – Office of Education, US Department of Health, Education, and Welfare, 1964
Under Title V, Guidance, Counseling, and Testing of the "National Defense Education Act of 1958," the Congress of the United States has recognized the value of tests as a tool which may be used to help make an early determination of the aptitudes and abilities of the students in U.S. schools. This bulletin attempts to explain the use and…
Descriptors: Educational History, School Guidance, Educational Testing, Aptitude Tests