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      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>.
| Package details | |
|---|---|
| Author | Steven Andrew Culpepper [aut, cre, cph] (<https://orcid.org/0000-0003-4226-6176>) | 
| Maintainer | Steven Andrew Culpepper <sculpepp@illinois.edu> | 
| License | GPL (>= 2) | 
| Version | 1.1.0 | 
| URL | https://github.com/tmsalab/fourPNO | 
| Package repository | View on CRAN | 
| Installation | Install the latest version of this package by entering the following in R:  | 
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