The Development of Relational AggressionResearch over the last few decades has revealed that individuals use a variety of mechanisms to hurt one another, many of which are not physical in nature. In this volume, editors Sarah M. Coyne and Jamie M. Ostrov turn their focus on relational aggression, behavior that is intended to cause harm to another individual's relationships or social standing in the group (e. g., gossiping, social exclusion, and spreading malicious rumors). Unlike physical