全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Sun-Joo Cho , Allan S. Cohen , Seock-Ho Kim
来源:[J].Journal of Statistical Computation and Simulation(IF 0.629), 2013, Vol.83 (2), pp.278-306Taylor & Francis
摘要:Markov chain Monte Carlo (MCMC) algorithms have been shown to be useful for estimation of complex item response theory (IRT) models. Although an MCMC algorithm can be very useful, it also requires care in use and interpretation of results. In particular, MCMC algorithms generally...
作者:Sun-Joo Cho , Allan S. Cohen , Brian Bottge
来源:[J].Psychometrika(IF 2.205), 2013, Vol.78 (3), pp.576-600Springer
摘要:Abstract(#br)A multilevel latent transition analysis (LTA) with a mixture IRT measurement model (MixIRTM) is described for investigating the effectiveness of an intervention. The addition of a MixIRTM to the multilevel LTA permits consideration of both potential heterogeneit...
作者:Seock-Ho Kim , Allan S. Cohen
来源:[J].Journal of Statistical Computation and Simulation(IF 0.629), 1996, Vol.55 (3), pp.181-187Taylor & Francis
摘要:The Behrens-Fisher distribution arises when one seeks to make inferences about the means of two normal populations withoutassuming the variances are equal. This paper presents tables of percentage points of the Behrens-Fisher distribution for tests of significance.
作者:Allan S. Cohen , Frank B. Baker ...
来源:[J].Psychometrika(IF 2.205), 1994, Vol.59 (3), pp.405-421Springer
摘要:Abstract(#br)Hierarchical Bayes procedures for the two-parameter logistic item response model were compared for estimating item and ability parameters. Simulated data sets were analyzed via two joint and two marginal Bayesian estimation procedures. The marginal Bayesian estimatio...
作者:... Paul Boeck , James A. Wollack , Allan S. Cohen
来源:[J].Psychometrika(IF 2.205), 2008, Vol.73 (1), pp.65-87Springer
摘要:Abstract(#br)An item response theory model for dealing with test speededness is proposed. The model consists of two random processes, a problem solving process and a random guessing process, with the random guessing gradually taking over from the problem solving process. The invo...
作者:Youn-Jeng Choi , Natalia Alexeev , Allan S. Cohen
来源:[J].International Journal of Testing, 2015, Vol.15 (3), pp.239-253Taylor & Francis
摘要:The purpose of this study was to explore what may be contributing to differences in performance in mathematics on the Trends in International Mathematics and Science Study 2007. This was done by using a mixture item response theory modeling approach to first detect latent classes...

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