After receiving a PhD from Heidelberg University and a DPhil from Oxford I worked as a postdoctoral fellow at the Max Planck Institute for Human Development, Berlin before obtaining a PD (habilitation) at Tuebingen University. I am a regular member of the Vision Sciences Society, Applied Vision Association, Scottish Vision Group and the Society for Mathematical Psychology. My research interests range from quantitative methods (hierarchical models, Bayesian inference), visual perception (motion, stereo, visual memory, visual awareness and illusions) to human decision making (sequential effects, cognitive bias, rationality, free will).