Description
Bayesian 4 Parameter Item Response Model.
Description
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>.
README.md
fourPNO
R package
Estimate Barton & Lord’s (1981) https://doi.org/10.1002/j.2333-8504.1981.tb01255.x four parameter IRT model with lower and upper asymptotes using Bayesian formulation described by Culpepper (2016) https://doi.org/10.1007/s11336-015-9477-6.
Installation
You can install fourPNO
from CRAN using:
install.packages("fourPNO")
Or, you can be on the cutting-edge development version on GitHub using:
if(!requireNamespace("devtools")) install.packages("devtools")
devtools::install_github("tmsalab/fourPNO")
Usage
To use the fourPNO
package, load it into R using:
library("fourPNO")
Inside the package, the estimation routines can be viewed as:
Gibbs_2PNO()
Gibbs_4PNO()
Author
Steven Andrew Culpepper
Citing the fourPNO
package
To ensure future development of the package, please cite fourPNO
package if used during an analysis or simulation study. Citation information for the package may be acquired by using in R:
citation("fourPNO")
License
GPL (>= 2)