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>.
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curl https://depscope.dev/api/check/conda/r-fourpnoFirst published · 2021-01-03 09:19:28.781000+00:00
Last updated · 2025-09-24 15:18:03.965000+00:00