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Sen, Sedat – International Journal of Testing, 2018
Recent research has shown that over-extraction of latent classes can be observed in the Bayesian estimation of the mixed Rasch model when the distribution of ability is non-normal. This study examined the effect of non-normal ability distributions on the number of latent classes in the mixed Rasch model when estimated with maximum likelihood…
Descriptors: Item Response Theory, Comparative Analysis, Computation, Maximum Likelihood Statistics
Amos, Jason, Ed. – Alliance for Excellent Education, 2008
"Straight A's: Public Education Policy and Progress" is a biweekly newsletter that focuses on education news and events both in Washington, DC and around the country. The following articles are included in this issue: (1) More Good, Less Bad, and Still Need for Improvement: Latest International Test Reveals U.S. Progress in Math and…
Descriptors: Academic Achievement, Career Guidance, Vocational Education, Public Education