Aggressive behavior is defined as any behavior directed
toward another child that is carried out with the proximate
intent to cause physical or psychological harm. In addition,
the victimizer must believe that the behavior will harm the
target, and the target must be motivated to avoid the victimizer’s
behavior (Anderson and Bushman 2002; Malti and
Krettenauer 2012). There are good reasons to believe that
the development of many forms of severe aggression is
related to a lack of trust. For example, van IJzendoorn
(1997) suggested that the development of overt aggressive