1 Center for Lifespan Psychology, Max Planck Institute for Human Development, Berlin 14195, Germany; Max Planck UCL Centre for Computational Psychiatry and Ageing Research, Berlin, Germany; Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA. Electronic address: dahl@mpib-berlin.mpg.de.
2 Center for Lifespan Psychology, Max Planck Institute for Human Development, Berlin 14195, Germany.
3 Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA; Department of Psychology, University of Southern California, Los Angeles, CA, USA; Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA.