The University of Alabama 3 credits BER
This course provides an introduction to item response theory (IRT). Major topics include 1) IRT models for dichotomous and polytomous data (e.g. Likert scales and partial credits). 2) basic estimation procedures, 3) differential item functioning (DIF) methods for evaluating validity and/or fairness in a scale, survey or educational assessment, and 4) applications using IRT software.
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