This paper discusses the outcomes of a study on indirect bullying behaviors in girls and the link between girls' peer relationships and bullying behaviors. The study used self-report and peer nomination instruments to survey 987 Australian girls in individual classes from Year 6 to Year 10 in 7 South Australian Catholic and independent schools, 5 of which were single sex and 2 of which were part of co-educational systems. Results from the study indicate that the girls clearly understood that bullying is about deliberate intent to harm, involves two parties of unequal status power, and is not an isolated incident but occurs repeatedly. Bullying was found to be often psychological, sometimes verbal, and never physical. Verbal behaviors that were identified as bullying included teasing, hassling, name calling, and criticizing others' appearances. The girls perceived the following indirect aggressive behaviors as bullying behaviors: spreading rumors, writing nasty notes, telling bad/false stories, saying bad things behind others' backs, gossiping, shutting others out of the group, and deliberately not inviting others to parties. The study also discusses findings that indicate perceptions on indirect aggressive behavior change when girls are older. (Contains 37 references.) (CR)