Prof. Dr. Rolf Becker Board Member Telefon +41 31 684 53 51 Fax +41 31 684 53 52 E-Mail rolf.becker@edu.unibe.ch Büro A 216 Postadresse Universität Bern Interfaculty Centre for Educational Research (ICER) Fabrikstrasse 8 3012 Bern Schweiz