The GDINA R package (Ma and de la Torre, GDINA: The generalizedDINA model framework. R package version 2.3.2. Retrieved fromhttps://CRAN.R-project.org/package=GDINA: 2019) provides psychometric tools for estimatinga range of cognitive diagnosis models (CDMs) and conducting various CDManalyses. The package is developed in the R programming environment (R CoreTeam, R: A language and environment for statistical computing. R Foundationfor Statistical Computing, Vienna.https://www.R-project.org/: 2018). This chapterdescribes the main features of the package and presents an exemplary analysis ofdata to illustrate the use of the package.