Behaviorism is primarily concerned with observable and measurable aspects of human behavior. In defining behavior, behaviorist learning theories emphasize changes in behavior that result from stimulus-response associations made by the learner.
La Nuestra Familia. As one of the biggest Chicano gangs in the world it is also bitter rivals with its fellow countrymen in the Mexican Mafia (#18). In fact, La Nuestra Familia is said to have started when a member of La eMe stole a fellow Latinoâs pair of shoes.
By the numbers: Chicago-area gangs. Chicago is the gang capital of the United States. According to the Chicago Crime Commission, a 2012 Chicago Police Department gang audit found there are more than 600 gang factions in the city, with a minimum combined membership of 70,000. As the number of gangs in the city increase, it's difficult for gangs to control large areas. Instead, gangs cling to streets.