Deviance is largely a lower-class phenomenon, resulting from the inability of those in the lower classes to achieve mainstream success goals by legitimate means such as educational achievement. Cohen criticises Merton's explanation of deviance on two grounds: Merton sees deviance as an individual response to strain, ignoring the fact that much deviance is committed in groups, especially among the young; and Merton focuses on utilitarian crime committed for material gain, such as theft or fraud, ignoring crimes such as assault and vandalism, which may have no economic motive