The field of Methodology and Statistics is concerned with research methodology and statistical methods, in particular in the context of psychological research. As such, the field focuses on the development, application and evaluation of psychological research.

The aim of M&S research activities is to increase further expertise on the design and analysis of longitudinal studies (including single case designs), developing expertise in the development and validation of (longitudinal) measurement instruments, developing methods to support behavior change research, promote rigorous Open Science practices, and sharing this knowledge by participating in internal or external research, organizing workshops, writing tutorials, and developing user-friendly software.

Research within M&S can thus be described in terms of two interlinking domains: (1) Translational Methodology and Statistics and (2) Applied Methodology and Statistics.