... of crime. Historically, theories of the biochemistry type have tried to establish the biological inferiority of criminals, but modern theories say that heredity and body organ dysfunctions produce a predisposition toward crime. 2. Psychological criminology has been around since 1914, and attempts to explain the consistent finding that there is an eight-point IQ difference between criminals and noncriminals. That gap isn't enough to notice, but it might make them more impulsive and foolhardy, and even smart people with high IQs are vulnerable to committing crime.Other psycho criminologists focus on personality disorders, like the psychopaths, sociopaths, and antisocial personalities. 3. Ecological criminology is the study of relationships between an organism and its environment, and this type of theory explains crime by the disorganized eco-areas where people live rather than by the kind of people who live there. 4. Strain. This type of theory sees crime as the normal ...

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