In the early 1900s, sociologist Edwin Sutherland sought to understand how deviant behavior developed among people. Since criminology was a young field, he drew on other aspects of sociology including social interactions and group learning . His conclusions established differential association theory, which suggested that individuals learn deviant behavior from those close to them who provide models of and opportunities for deviance. According to Sutherland, deviance is less a personal choice and more a result of differential socialization processes. For example, a young person whose friends are sexually active is more likely to view sexual activity as acceptable. Sutherland developed a series of propositions to explain how deviance is learned. In proposition five, for example, he discussed how people begin to accept and participate in a behavior after learning whether it is viewed as “favorable” by those around them. In proposition six, Sutherland expressed the ways that exposure to more “definitions” favoring the deviant behavior than those opposing it may eventually lead a person to partake in deviance (Sutherland 1960), applying almost a quantitative element to the learning of certain behaviors. In the example above, a young person may find sexual activity more acceptable once a certain number of their friends become sexually active, not after only one does so.
Sutherland’s theory may explain why crime is multigenerational. A longitudinal study beginning in the 1960s found that the best predictor of antisocial and criminal behavior in children was whether their parents had been convicted of a crime. Children who were younger than ten years old when their parents were convicted were more likely than other children to engage in spousal abuse and criminal behavior by their early thirties. Even when taking socioeconomic factors such as dangerous neighborhoods, poor school systems, and overcrowded housing into consideration, researchers found that parents were the main influence on the behavior of their offspring.