Analysing a test with packages in R Gavin T. L. Brown 10.17608/k6.auckland.6967460.v1 https://auckland.figshare.com/articles/journal_contribution/Analysing_a_test_with_packages_in_R/6967460 This tutorial is created for presentation at the 2018 EARLI SIG 1 summer school in Helsinki, Finland (August 27-28). It provides step by step instruction in using R packages to analyse a dichotomously scored test within Classical Test and Item Response Theories. Packages used include 'psych' and 'ltm'. 2018-08-28 08:40:38 Classical test theory item response theory R software ltm package Education Assessment and Evaluation Educational Psychology Econometric and Statistical Methods