IRT

Author: Assessment Systems Corp.
Contact: http://www.assess.com/irt-scoring-spreadsheet/
Description: Item Response Theory (IRT) is the measurement paradigm used by the majority of high-stakes testing programs across the world. Because it is very mathematically and conceptually complex, it still remains underutilized. If you are new to IRT, one of the most important concepts to learn is scoring algorithms. The IRT Scoring Spreadsheet helps you learn this process interactively, by letting you enter various item parameters and student responses, then watch the likelihood functions and theta estimates change in real time.
Analyses: Equating
System Requirements:
Measurement Model: IRT/Rasch
License Type: Freeware
Documentation: