Institution: | 1. Veliko Tarnovo University , Bulgaria E-mail: hristokyuchukov@yahoo.com;2. University of Haifa , Israel E-mail: dkalekin@construct.haifa.ac.il;3. The Hebrew University , Jerusalem, Israel E-mail: mszviman@mscc.huji.ac.il;4. Faculty of Psychology and Educational Sciences , ‘Al. I. Cuza’ University , Iasi, Romania E-mail: sraciun@uaic.ro |