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Bayesian analysis of itemresponse theory (IRT) models, roll call analysis; computing highest density regions; maximum likelihood estimation of zeroinflated and hurdle models for count data; goodnessoffit measures for GLMs; data sets used in writing and teaching at the Political Science Computational Laboratory; seatsvotes curves.
Package details 


Author  Simon Jackman, with contributions from Alex Tahk, Achim Zeileis, Christina Maimone, Jim Fearon and Zoe Meers 
Maintainer  Simon Jackman <simon.jackman@sydney.edu.au> 
License  GPL2 
Version  1.5.5 
URL  http://github.com/atahk/pscl 
Package repository  View on CRAN 
Installation 
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