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Yen, Wendy M. – 1982
Test scores that are not perfectly reliable cannot be strictly equated unless they are strictly parallel. This fact implies that tau equivalence can be lost if an equipercentile equating is applied to observed scores that are not strictly parallel. Thirty-six simulated data sets are produced to simulate equating tests with different difficulties…
Descriptors: Difficulty Level, Equated Scores, Latent Trait Theory, Methods
Popham, W. James – American School Board Journal, 2003
Claims that standards-based tests neither measure skills and knowledge accurately nor help educators do a better instructional job. The article offers suggestions in four areas to make the tests contribute to improved instruction: measurement of content standards; descriptions of standards; standard-by-standard reporting; and locally administered…
Descriptors: Academic Achievement, Academic Standards, Cognitive Tests, Educational Testing
