1. Department of Primary Education, School of Education Sciences, Democritus University of Thrace, Alexandroupolis, Greece
2. Department of Education Sciences in Early Childhood, School of Education Sciences, Democritus University of Thrace, Alexandroupolis, Greece
3. School of Humanities, Hellenic Open University, Patras, Greece
4. Department of Psychology, School of Philosophy, Psychology and Language Sciences, University of Edinburgh, UK