When a crime is committed, there is always a reason or a motive behind it. It is quite important to understand the mindset of a criminal. What thought goes through their mind, what leads them to committing crime and many such true crime questions and their answers can only be obtained by learning about crime and its causes.
The study of the causes, nature and extent of crimes as well as behavior of the criminals, intended for understanding crimes in a better manner; and for implementing various new policies in the criminal justice system is called Criminology. This study is principally related to etiology which is the study of causes or reasons for crime. People who do research in the field of criminology are called criminologists.
Criminology provides many theories on why crimes are committed by criminals on the basis of assumption about human nature. There are many theories that exist in criminology. Now let us move forward and take a look at the conventional theories. The above mentioned theories are just the mainstream or commonly used theories in trying to figure the causes of crime. There are many other factors that can be responsible for a person performing any crime. It can also be a psychological disorder, biological factors, economical factors etc.