A new study in the Archives of General Psychiatry offers clues to how children become targets of bullying, Newsweek reports. The first key finding was that bully victims in grade school are more likely to have been aggressive (e.g., "smashing a toy when someone takes their ball away") very early in life, as young as 17 months, in fact. "That may sound counterintuitive, but it's not surprising to experts in the field, who have known for some time that there's a link between being aggressive and being tormented." When an angry child acts out his or her frustrations, peers know there are buttons to push. Another predictor: when these very small children take their anger out on other children. Two other risk factors Newsweek mentions are "harsh or reactive parenting" and "lower income families." Here's the study.