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Direct linkLiang, Tie; Han, Kyung T.; Hambleton, Ronald K. – Applied Psychological Measurement, 2009
This article discusses the ResidPlots-2, a computer software that provides a powerful tool for IRT graphical residual analyses. ResidPlots-2 consists of two components: a component for computing residual statistics and another component for communicating with users and for plotting the residual graphs. The features of the ResidPlots-2 software are…
Descriptors: Computer Software, Statistics, Item Response Theory, Graphs
Peer reviewedDrasgow, Fritz; And Others – Applied Psychological Measurement, 1995
This study examined how well current software implementations of four polytomous item response theory models fit several multiple-choice tests. The main conclusion is that fitting polytomous item response models to multiple-choice item responses is more complex than fitting the three-parameter logistic model to dichotomously scored responses. (SLD)
Descriptors: Computer Software, Goodness of Fit, Item Response Theory, Models
