Most of us laugh at something funny multiple times during a typical day. Humor serves multiple purposes and though there is a sizable and expanding research literature on the subject, the research is spread in a variety of disciplines. Until now there has been no systematic integration of that literature into a single book. The Psychology of Humor reviews the literature, integrating disperse findings from across subdisciplines in psychology, as well as related fields such as anthropology, biology, computer science, linguistics, and sociology. The book begins by defining humor, followed by a discussion of theories of humor, and then begins analyzing research findings from the various subdisciplines in psychology. Coverage includes the cognitive processes involved in humor, as well as the effects of humor on cognition, the neurobiology of humor, the social functions of humor, individual differences in personality and humor, the development of humor understanding and use over the lifespan, the association of humor with both physical and mental health, and applications of humor use in psychotherapy, education, and the workplace.