Researchers offer various definitions and functions of humor. Some suggest that it "consists of amusing communications that produce positive emotions and cognitions in the individual, group, or organization." Others assert that humor is "any event shared by an agent (e.g. an employee) with another individual (i.e. a target) that is intended to be amusing to the target and that the target perceives as an intentional act." Further, researchers have identified several functions of humor, including coping, stress-relief, defense mechanism, bonding and cohesiveness, ingratiation, power, control, aggression, and the subversion of power.