Professor Ed Diener's Homepage (University of Illinois, Chikago, USA): http://www.psych.uiuc.edu/~ediener/

Soziologie-Professor Ruut Veenhoven's Homepage (World Database of Happiness, Erasmus Universität Rotterdam, Holland): http://www.eur.nl/fsw/research/happiness/

Professor Martin Seligman's Positive Psychology Homepage (University of Pennsylvania, Pittsburgh, USA): http://www.psych.upenn.edu/seligman/pospsy.htm

Quelle: www.gluecksforschung.de