The three forms of social learning theory are differential association theory, differential reinforcement theory, and neutralization theory. Differential association theory states that criminal behavior is learned through association with criminal values, patterns, and attitudes. It does not explain how an individual can be exposed to and learn these patterns, but not be affected by them. Differential reinforcement theory also explains that crime is learned, but psychologically combines the points of differential association theory and learning behavior. It combines the theories included in trait theory, which deals with the psychological aspect, reward and punishment, and the concepts of differential association theory. Neutralization theory is also a learning theory. The underground culture and individuals who follow the inner values ​​are not always consistent. The theory suggests that criminals insinuate themselves between criminality and regular society, and that their actions can even lead to the defense of law-abiding people.