Characteristics of bullies and accomplices
Studies have shown that envy and resentment may be motives for bullying. Research on the self-esteem of bullies has produced equivocal results. While some bullies are arrogant and narcissistic, they can also use bullying as a tool to conceal shame or anxiety or to boost self-esteem: by demeaning others, the abuser feels empowered. Bullies may bully out of jealousy or because they themselves are bullied. Psychologist Roy Baumeister asserts that people who are prone to abusive behavior tend to have inflated but fragile egos. Because they think too highly of themselves, they are frequently offended by the criticisms and lack of deference of other people, and react to this disrespect with violence and insults.
Researchers have identified other risk factors such as depression and personality disorders, as well as quickness to anger and use of force, addiction to aggressive behaviors, mistaking others actions as hostile, concern with preserving self-image, and engaging in obsessive or rigid actions. A combination of these factors may also be causes of this behavior. In one study of youth, a combination of antisocial traits and depression was found to be the best predictor of youth violence, whereas video game violence and television violence exposure were not predictive of these behaviors.
Bullying may also result from a genetic predisposition or a brain abnormality in the bully. While parents can help a toddler develop emotional regulation and control to restrict aggressive behavior, some children fail to develop these skills due to insecure attachment with their families, ineffective discipline, and environmental factors such as a stressful home life and hostile siblings. Moreover, according to some researchers, bullies may be inclined toward negativity and perform poorly academically. Dr. Cook says, "A typical bully has trouble resolving problems with others and also has trouble academically. He or she usually has negative attitudes and beliefs about others, feels negatively toward himself/herself, comes from a family environment characterized by conflict and poor parenting, perceives school as negative and is negatively influenced by peers."
Contrarily, some researchers have suggested that some bullies are psychologically strongest and have high social standing among their peers, while their targets are emotionally distressed and socially marginalized. Peer groups often promote the bully's actions, and members of these peer groups also engage in behaviors, such as mocking, excluding, punching, and insulting one another as a source of entertainment. Other researchers also argued that a minority of the bullies, those who are not in-turn bullied, enjoy going to school, and are least likely to take days off sick.
Research indicates that adults who bully have authoritarian personalities, combined with a strong need to control or dominate. It has also been suggested that a prejudicial view of subordinates can be a particularly strong risk factor.
In a recent study, bullies showed lower school performance-related self-esteem than non-involved students. They also showed higher social self-esteem than victims of traditional bullying.
Brain studies have shown that the section of the brain associated with reward becomes active when bullies are shown a video of someone inflicting pain on another.
Projection
A bully may project his/her own feelings of vulnerability onto the target(s) of the bullying activity. Despite the fact that a bully's typically denigrating activities are aimed at the bully's targets, the true source of such negativity is ultimately almost always found in the bully's own sense of personal insecurity and/or vulnerability.