Arpeggio provide diagnostic appraisals of examinee ability on multiple skills or multiple facets of understanding using the Fusion Model, and provides information regarding the discrimination of items and the test as a whole with respect to those skills.
Nonparametrically estimates the conditional covariance curve for each item pair as a function of the underlying composite latent ability best measured by the total test score.
Nonparametrically provides a detailed dimensional description of a test in which the items are grouped around several underlying psychological or cognitive constructs.
DIMPACK is a software package that includes DIMTEST, DETECT, and HCA/CCPROX. DIMTEST 2 is a hypothesis testing procedure that assesses lack of latent unidimensionality. DETECT nonparametrically provides a detailed dimensional description of a test in which the items are grouped around several distinct reading passages or underlying psychological or cognitive constructs. HCA/CCPROX performs a latent multidimensionality-sensitive hierarchical cluster analysis on dichotomously scored items.
MUDFOLD (Multiple UniDimensional unFOLDing) is a program for analyzing proximity data (e.g., attitudes, preferences, or choices) with the Coombsian unfolding model.
Implements a nonparametric hypothesis testing procedure that assesses lack of latent unidimensionality for polytomously & dichotomously scored educational or psychological tests.
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