Description Author(s) See Also
Estimate Barton & Lord's (1981) <doi:10.1002/j.2333-8504.1981.tb01255.x> four parameter IRT model with lower and upper asymptotes using Bayesian formulation described by Culpepper (2016) <doi:10.1007/s11336-015-9477-6>.
Maintainer: Steven Andrew Culpepper sculpepp@illinois.edu (0000-0003-4226-6176) [copyright holder]
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