aggression: Physical or verbal behavior that is intended to harm another person.

antisocial: Showing behavior or attitudes that go against the values of general society or authority.

assault: A violent physical attack; a threat or attempt to inflict bodily harm on a person.

censorship: The act of examining and removing parts considered objectionable from a work, such as words from a book or scenes from a film or television program.

control group: A group that receives standard treatment or no intervention in a research study.

first-person shooter game: A video game in which the player controls the game and experiences the action through the eyes of the main character, whose task is to shoot and kill opponents.

homicide: The killing of one human being by another.

PCA: Production Code Administration, an internal film censorship agency from the 1930s to 1950s.

prime time: Hours when television is watched the...