Gilling (1997) mentioned different manners of interferences could be indicated from different theories through various methods and assistants, which applied in many cases such as stages in the provenance of crime. He concluded that the effect of criminologist suggestion in crime interference is different because of the focal point on research is divergent.
One of the John Young’s researches: Thinking Seriously About Crime: Some models of Criminology has analyzed different prospects of criminology, which are Classicism, Positivism, Conservatism etc based on the idea of Policy Deduction. It is not just about revealing different forms of criminology, but investigating whether their intention is punishment or treatment. (Young, 1981).
Classicism
Enhancing informational knowledge is the purpose of its punishment, which allows people to conduct rational decision. Therefore, the proportional penalty is suggested to launch when they devoted violation that harms the society, which promoted equality that offenders need to be aware of.
Positivism
Positivist focused on the background of the criminal, who believed people committed crime because of the environment influence. Treatment is a preferable than punishment to offenders(Young, 1981).
Conservatism
Combined the advantages of Classicism and Positivism is the aim of Conservatism, which claimed punishment generate adjourn effects
According to Young, he noted the core idea of general deterrence in Conservatism accept Beccaria’s idea