Articles

• Psychoco: Psychometric Computing in R
  Florian Wickelmaier, Carolin Strobl, Achim Zeileis
  Vol. 48, Issue 1, May 2012
  Submitted 2012-05-23, Accepted 2012-05-23
• lavaan: An R Package for Structural Equation Modeling
  Yves Rosseel
  Vol. 48, Issue 2, May 2012
  Submitted 2011-09-23, Accepted 2012-02-06
• semPLS: Structural Equation Modeling Using Partial Least Squares
  Armin Monecke, Friedrich Leisch
  Vol. 48, Issue 3, May 2012
  Submitted 2011-09-21, Accepted 2012-04-16
• qgraph: Network Visualizations of Relationships in Psychometric Data
  Sacha Epskamp, Angélique O.J. Cramer, Lourens J. Waldorp, Verena D. Schmittmann, Denny Borsboom
  Vol. 48, Issue 4, May 2012
  Submitted 2011-06-16, Accepted 2012-01-18
• New Developments in Mokken Scale Analysis in R
  L. Andries van der Ark
  Vol. 48, Issue 5, May 2012
  Submitted 2011-09-13, Accepted 2012-01-18
• mirt: A Multidimensional Item Response Theory Package for the R Environment
  R. Philip Chalmers
  Vol. 48, Issue 6, May 2012
  Submitted 2011-08-24, Accepted 2012-02-08
• Flexible Rasch Mixture Models with Package psychomix
  Hannah Frick, Carolin Strobl, Friedrich Leisch, Achim Zeileis
  Vol. 48, Issue 7, May 2012
  Submitted 2011-10-06, Accepted 2012-03-08
• Random Generation of Response Patterns under Computerized Adaptive Testing with the R Package catR
  David Magis, Gilles Raîche
  Vol. 48, Issue 8, May 2012
  Submitted 2011-04-22, Accepted 2012-01-09
• Bradley-Terry Models in R: The BradleyTerry2 Package
  Heather Turner, David Firth
  Vol. 48, Issue 9, May 2012
  Submitted 2011-09-16, Accepted 2012-04-23
• prefmod: An R Package for Modeling Preferences Based on Paired Comparisons, Rankings, or Ratings
  Reinhold Hatzinger, Regina Dittrich
  Vol. 48, Issue 10, May 2012
  Submitted 2011-09-23, Accepted 2012-04-05
• Extended Beta Regression in R: Shaken, Stirred, Mixed, and Partitioned
  Bettina Grün, Ioannis Kosmidis, Achim Zeileis
  Vol. 48, Issue 11, May 2012
  Submitted 2011-10-15, Accepted 2011-02-14

Code Snippets

• IRTrees: Tree-Based Item Response Models of the GLMM Family
  Paul De Boeck, Ivailo Partchev
  Vol. 48, Code Snippet 1, May 2012
  Submitted 2011-09-16, Accepted 2012-04-14