1 Department of Clinical Psychology, Utrecht University, Utrecht 3508TC, Netherlands; Department of Clinical Psychology and Experimental Psychopathology, University of Groningen, Groningen, Netherlands. Electronic address: m.s.stroebe@uu.nl.
2 Department of Social and Organizational Psychology, University of Groningen, Groningen, Netherlands.
3 Department of Clinical Psychology, Utrecht University, Utrecht 3508TC, Netherlands.
4 Department of Gerontology, McCormack Graduate School, University of Massachusetts Boston, Boston, MA, USA.