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Psychometrika

1991 Volume 56, Number 3

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Table of Contents

Number of articles: 5

  1. Maximum Marginal Likelihood Estimation for Semiparametric Item Analysis

    J O. Ramsay & S Winsberg

    A method is presented for estimating the item characteristic curve (ICC) using polynomial regression splines. Estimation of spline ICCs is described by maximizing the marginal likelihood formed by ... More

    pp. 365-79

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  2. Testing Whether Independent Treatment Groups Have Equal Medians

    Rand R. Wilcox

    New methods for comparing the medians corresponding to independent treatment groups are suggested. Procedures are based on the estimator of F. Harrell and C. Davis in conjunction with a... More

    pp. 381-95

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  3. Enumeration and Simulation Methods for 0-1 Matrices with Given Marginals

    Tom A. B. Snijders

    A complete enumeration method and a Monte Carlo method are presented to calculate the probability distribution of arbitrary statistics of adjacency matrices when these matrices have the uniform... More

    pp. 397-417

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  4. Paired Comparison, Triple Comparison, and Ranking Experiments as Generalized Linear Models, and Their Implementation on GLIM

    Douglas E. Critchlow & Michael A. Fligner

    A variety of paired comparison, triple comparison, and ranking experiments are discussed as generalized linear models. All such models can be easily fit by maximum likelihood using the GLIM... More

    pp. 517-33

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  5. Exact and Best Confidence Intervals for the Ability Parameter of the Rasch Model

    Karl Christoph Klauer

    Smallest exact confidence intervals for the ability parameter of the Rasch model are derived and compared to the traditional asymptotically valid intervals based on Fisher information. Tables of... More

    pp. 535-47

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