fourPNO

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.

Last 30 days

This package has been downloaded 275 times in the last 30 days. Enough downloads to make a small wave in the niche community. The curiosity is spreading! The following heatmap shows the distribution of downloads per day. Yesterday, it was downloaded 3 times.

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Last 365 days

This package has been downloaded 3,360 times in the last 365 days. Now we’re talking! This work is officially 'heard of in academic circles', just like those wild research papers on synthetic bananas. The day with the most downloads was Apr 10, 2024 with 57 downloads.

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.