The first year of life is an essential phase for all psychological areas in child development. The key competences, vital for all development processes of the child, focus on the communication and the socio-emotional competencies, mostly because the infant is strongly dependent of the adult care environment. The quality of the primary caregiving…

This research examined the child, parent, and family conditions under which attachment disorganization was related to both level and change in externalizing behavior during preschool among a community sample. Using the ordinary least squares regression, we found that attachment disorganization at 12 months significantly predicted children's…

We evaluated the extent to which the externalizing behavior construct is self-organizing in the first 2 years of life. Based on dynamic systems theory, we hypothesized that changes in physical aggression, defiance, activity level, and distress to limitations would each be predicted by earlier manifestations of one another. These hypotheses were…