The aim of the 1st ISSBD-EADP symposium is to build bridges between the two societies, ISSBD and European Association for Developmental Psychology. The symposium will begin by the overview to the history between ISSBD and EADP given by professor Willem Koops from the University of Utrecht, the Netherlands. Then Xinyin Chen, from the University of Pennsylvania, USA, the President of the ISSBD will present the role of parental migration to children’s social, school, and psychological adjustment in rural China, highlighting the influence on peers. Second, Tina Malti, from University of Toronto, Canada, Secretary General, ISSBD will highlight the role of physiological and affective responses to peer exclusion. Next , Katariina Salmela-Aro, University of Jyväskylä and Helsinki, Finland, presents results on the role of peer influence and selection in multi-dimensional school engagement using Finnish longitudinal study in secondary schools. Finally, Frosso Motti-Stefanidi, University of Athens, Greece, Past-President EADP presents results in Greece about. Acculturation effects on peer nominations using longitudinal study of immigrant and Greek youth in middle school.