Criminology (from Latin lang: crīmen, "accusation"; and Greek lang: -λογία, -logia) is the social science approach to the study of crime as an individual and social phenomenon. Criminological research areas include the incidence and forms of crime as well as its causes and consequences. They also include social and governmental regulations and reactions to crime. Criminology is an interdisciplinary field in the behavioral sciences, drawing especially on the research of sociologists and psychologists, as well as on writings in law. An important way to analyze data is to look at quantitative methods in criminology. In 1885, Italian law professor Raffaele Garofalo coined the term "criminology" (in Italian, criminologia). The French anthropologist Paul Topinard used it for the first time in French (criminologie) around the same time.

Schools of thought

In the mid-18th century, criminology arose as social philosophers gave thought to crime and concepts of law. Over time, several schools of thought have developed.

Classical school

The Classical School, which developed in the mid 18th century, was based on utilitarian philosophy. Cesare Beccaria, author of On Crimes and Punishments (1763-64), Jeremy Bentham, inventor of the panopticon, and other classical school philosophers argued that (1) people have free will to choose how to act. (2) Deterrence is based upon the notion of the human being as a 'hedonist' who seeks pleasure and avoids pain, and a 'rational calculator' weighing up the costs and benefits of the consequences of each action. Thus, it ignores the possibility of irrationality and unconscious drives as motivational factors (3) Punishment (of sufficient severity) can deter people from crime, as the costs (penalties) outweigh benefits, and that severity of punishment should be proportionate to the crime. (4) The more swift and certain the punishment, the more effective it is in deterring criminal behavior. The Classical school of thought came about at a time when major reform in penology occurred, with prisons developed as a form of punishment. Also, this time period saw many legal reforms, the French Revolution, and the development of the legal system in the United States.

Positivist school

The Positivist School presumes that criminal behaviour is caused by internal and external factors outside of the individual's control. The scientific method was introduced and applied to study human behavior. Positivism can be broken up into three segments which include biological, psychological and social positivism.

Cesare Lombroso, an Italian prison doctor working in the late 19th century and sometimes regarded as the "father" of criminology, was one of the largest contributors to biological positivism and founder of the Italian school of criminology. Lombroso took a scientific approach, insisting on empirical evidence, for studying crime. Considered as the founder of criminal anthropology, he suggested that physiological traits such as the measurements of one's cheek bones or hairline, or a cleft palate, considered to be throwbacks to Neanderthal man, were indicative of "atavistic" criminal tendencies. This approach, influenced by the earlier theory of phrenology and by Charles Darwin and his theory of evolution, has been superseded. Enrico Ferri, a student of Lombroso, believed that social as well as biological factors played a role, and held the view that criminals should not be held responsible when factors causing their criminality were beyond their control. Criminologists have since rejected Lombroso's biological theories, with control groups not used in his studies.