Fandom is the term used to describe the intense emotional attachment that fans feel towards their favorite sports teams.

According to social identity theory, one of the main reasons why fans identify with their favorite sports teams is to feel a sense of belonging and community.

Illusory superiority is the term used to describe the tendency for fans to perceive their favorite sports teams as being superior to other teams, even when there is no objective evidence to support this belief.

Hooliganism is the term used to describe the tendency for fans to engage in negative behaviors, such as booing, heckling, or even violence, towards opposing teams or their fans.

Emotional contagion is the term used to describe the tendency for fans to experience intense emotions, such as joy, sadness, or anger, in response to the performance of their favorite sports teams.

Self-serving bias is the term used to describe the tendency for fans to attribute positive outcomes to their own team's skill and effort, while attributing negative outcomes to external factors, such as bad luck or biased officiating.

Optimism bias is the term used to describe the tendency for fans to overestimate the likelihood of their favorite sports teams winning, even when the odds are against them.

Magical thinking is the term used to describe the tendency for fans to engage in rituals or superstitions in an attempt to influence the outcome of a game.

Sports bereavement is the term used to describe the tendency for fans to experience a sense of loss or grief when their favorite sports teams lose or when a star player retires.

Consumerism is the term used to describe the tendency for fans to engage in excessive spending on merchandise, tickets, and other team-related items.

Pilgrimage is the term used to describe the tendency for fans to travel long distances to attend games or other team-related events.

Cyber-fandom is the term used to describe the tendency for fans to engage in online discussions and debates about their favorite sports teams.

Fan community is the term used to describe the tendency for fans to form close relationships with other fans of their favorite sports teams.

Philanthropy is the term used to describe the tendency for fans to engage in acts of charity or volunteerism in the name of their favorite sports teams.

Collective self-esteem is the term used to describe the tendency for fans to experience a sense of pride and accomplishment when their favorite sports teams win or achieve success.