Walter Reckless developed the Containment Theory to explain how people avoid deviant behavior in society. The theory proposes that there are two components that prevent criminal behavior: outer containment through social norms and rules enforced by the community, and inner containment through an individual's self-control, self-image, and ability to manage frustration. Reckless also identified "push" and "pull" forces that can influence a person toward deviant acts, such as unhappiness, peer pressure, or the desire for money and status. According to the theory, a balance of outer societal constraints and strong inner control mechanisms help contain criminal impulses.