1. Faculty of Philosophy and Education, Katholische Universität Eichstätt-Ingolstadt, Eichstätt, Germany
2. Faculty of Education, Cardinal Stefan Wyszyński University in Warsaw, Warsaw, Poland
3. Faculty of Education, University of Białystok, Białystok, Poland
4. Institute of Psychology, Polish Academy of Sciences, Warsaw, Poland
5. Department of Psychology, Luther College, Decorah, IA, USA