The temperament has often been identified like being an element determining the child's ulterior development (Janson & Malinesen 2008). Several studies showed meaningful relations between the temperament of the child and some aspects of the social development, as the internalized problems and the externalized problems (Janson & Mathiesen, 2008; Morizot & Vitaro, 2003; Sansón, Hemphill & Smart, 2004; PaulussenHoogeboom, Stams, Hermanns, Peetsma & Van Wittenboer den, 2008; Mathiesen & Sansón 2000) as well as the social expertise (Sansón, Hemphill & Smart 2004). Of other ...