My research program is dedicated to providing a better understanding of personality development, relationship development, and their interplay across the lifespan (e.g., Bühler et al., 2021; Bühler et al., 2024; Bühler & Orth, 2024; Bühler & Orth, 2025; Scheling et al., 2025). Specifically, my aim is to provide robust insights into systematic developmental patterns and to identify the relevant daily mechanisms that have the potential to explain changes in personality and romantic relationships. In terms of methods, I carry out meta-analyses and use existing nationally representative datasets. I also collect own data through intensive longitudinal studies and conduct observational studies in the lab. Various media outlets have discussed our research (see Press).

I work as Full Professor of Diagnostics and Differential Psychology at the University of Freiburg and lead the Emmy Noether Research Group AMOR at the University of Freiburg. In this project, we conduct a 4-year experience-sampling study to capture personality change and relationship change with granularity. Our sample consists of romantic couples stratified across the adult lifespan.