Past-President and member of the Council of The European Society for Developmental Psychology (ESDP)
Editor (and founder) of the European Journal of Developmental Psychology. Consulting Editor (and founder) of the Journal: “Infant and Child Development”;
Chair of ADNG (Archief- and Documentatiecentrum voor de Nederlandse Gedragswetenschappen) (Centre for Archives and Documentation of the Behavioral Sciences in the Netherlasnds)
Chair of the History Committee of the Society for Research in Child Development (SRCD(
member of Commissie Preventie en behandeling van jeugdtrauma's van de Gezondheidsraad (Committee for prevention and treatment of youth traumata)
Columnist for the journal Pedagogiek in de Praktijk (Practical Pedagogy)
