Roos van der Haer

Learn More
Appetitive aggression – a rewarding perception of the perpetration of violence – seems to be an adaptation common to adverse conditions. Children raised within armed groups may develop attitudes and values that favour harming others when socialized within a combat force. Combatants who joined an armed force early in their lives should, therefore, perceive(More)
Conflict researchers are divided on what explains the massive victimisation and murdering of civilians and unarmed combatants, but largely agree that many of these acts are intentional and that the main perpetrators rely on them for economic or political gain. The terror strategies against civilians, which the scholarly literature has recently dubbed(More)
BACKGROUND Civil wars are characterized by intense forms of violence, such as torture, maiming and rape. Political scientists suggest that this form of political violence is fostered through the provision of particular intrinsic and extrinsic rewards to combatants. In the field of psychology, the perpetration of this kind of cruelty is observed to be(More)
A range of theories have attempted to explain the variation in civilian abuse of warring parties. Most of these theories have been focused on the strategic environment in which these acts take place. Less attention is devoted to the perpetrators of these human right abuses themselves: the armed groups. This study tries to fill this niche by using the(More)
It has been postulated that the violent behavior that characterizes armed conflict is reinforced by the possibility of receiving rewards. The present study examined the potential influence of two types of rewards in an ongoing setting of conflict: extrinsic and intrinsic rewards. Former combatants active in the Democratic Republic of the Congo (N = 198)(More)
A range of theories have attempted to explain the existing variation in the level of civilian victimization across countries. To date, most of these theories have been focused on the influence of the strategic environment in which these atrocities take place or they have emphasized the organizational difference between the involved actors. Less attention(More)
  • 1