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When contextual features of test-taking environments differentially affect item responding for different test-takers and these features vary across test administrations, they may cause differential ...

How can I specify a binomial response model using a macro? The Manual Supplement (available to download for free) gives an example of running a logistic regression from a macro on pp 86-87, and this ...

This three-day course provides an introduction to multilevel modelling and includes software practicals in your choice of software: MLwiN, R, or Stata. We focus on multilevel modelling for continuous ...