Abstract
In this paper we introduce ShinyItemAnalysis application for psychometric analysis of educational and psychological tests and their items. ShinyItemAnalysis provides graphical interface and web framework to open source statistical software R and thus opens up its functionality to wide audience.
Application covers broad range of methods and offers data examples, model equations, parameter estimates, interpretation of results, together with selected R code, and is thus suitable for teaching psychometric concepts with R. The application also aspires to be a simple tool for routine analysis by allowing the users to upload and analyze their own data and by generating analysis report.
We conclude by arguing that psychometric analysis should be a routine part of test development in order to gather proofs of reliability and validity of the measurement. With example of admission test to medical faculty, we demonstrate how ShinyItemAnalysis may provide a simple and free tool to routinely analyze tests.