Statistics and Data Science
We conduct reserach in three areas and their intersection: psychometric modeling, machine learning methods, and multilevel and longitudinal modeling. On the one hand, we assess existing tools, test their applicability, and demonstrate opportunities and pitfalls for analyses in psychological research. On the other hand, we develop new tools and extend existing tools to offer new possibilities for data analysis and hypothesis generation. Our methodological approach are mainly simulation studies conducted in the open-source software R and illustrations of the new methods using empirical data from psychology.