Abstract
Research into the types of gangs serviced by the street workers of the New York City Youth Board points to the beginnings of a more sophisticated type of delinquent group. Although continu ing to come from neighborhoods which lack stability and offer multiple opportunities for delinquency, many New York gangs have shifted from the more tightly structured, aggressive gangs of the 1950's, to a rather loosely-knit group with informal leader ship and less cohesive organization. Many of the larger fighting gangs have dissolved into smaller cliques in which violence is more diffuse and individualistic. Aggression remains the chief mechanism of group maintenance, but extreme intergroup con flict has declined. As group solidarity has weakened, the group's tolerance for a wider range of deviance has increased.

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