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itemanalysis - Classical Test Theory Item Analysis
Runs classical item analysis for multiple-choice test items and polytomous items (e.g., rating scales). The statistics reported in this package can be found in any measurement textbook such as Crocker and Algina (2006, ISBN:9780495395911).
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3.18 score 3 stars 2 scripts 288 downloadsEstCRM - Calibrating Parameters for the Samejima's Continuous IRT Model
Estimates item and person parameters for the Continuous Response Model (CRM; Samejima, 1973, <doi:10.1007/BF02291114>), computes item fit residual statistics, draws empirical 3D item category response curves, draws theoretical 3D item category response curves, and generates data under the CRM for simulation studies.
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1.95 score 1 stars 3 dependents 8 scripts 549 downloads