1 Department of Psychology, University of Bonn, Bonn, Germany; Department of Psychiatry and Psychotherapy, Otto Creutzfeldt Center for Cognitive and Behavioral Neuroscience, University of Muenster, Muenster, Germany.
2 Department of Psychology, University of Bonn, Bonn, Germany. Electronic address: ulrich.ettinger@uni-bonn.de.
3 Department of Psychology, University of Bonn, Bonn, Germany.
4 Centre for Cognitive Neuroscience, College of Health and Life Sciences, Brunel University London, Uxbridge, UK.