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Peer reviewedde Gruijter, Dato N. M. – Psychometrika, 1984
Thissen and Wainer (EJ 284 848) suggested that the introduction of a prior distribution for the lower asymptote may alleviate problems of a large standard error of the location parameter of the three parameter logistic model. The correctness of this suggestion is demonstrated in detail. (Author/BW)
Descriptors: Bayesian Statistics, Estimation (Mathematics), Latent Trait Theory, Maximum Likelihood Statistics
Download full textWainer, Howard; And Others – 1992
Four researchers at the Educational Testing Service describe what they consider some of the most vexing research problems they face. While these problems are not completely statistical, they all have major statistical components. Following the introduction (section 1), in section 2, "Problems with the Simultaneous Estimation of Many True…
Descriptors: Adaptive Testing, Bayesian Statistics, Educational Research, Estimation (Mathematics)
