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What Leads to Criminal Behavior?

HCA image for AIDS and dementiaThere are certain symptoms like short attention span, lack of impulse control, and poor home life that are likely predictors of criminal behavior. What other factors may lead a person to break the law?

Testosterone    TOP

Some researchers believe that the hormone testosterone plays a role in criminal behavior. This hormone, which is responsible for male physical characteristics and behavior traits, such as aggression and impulsivity, floods the bodies of adolescent boys. As a result, some boys go through an adolescent delinquent period, although most do not go on to pursue a life of crime. Those who do become criminals are influenced by other factors, such as psychological qualities.

Antisocial Personality Disorder    TOP

One common type of career criminal is the person with antisocial personality disorder—also called sociopathy or psychopathy. This disorder is characterized by a lack of conscience, inability to empathize with victims, manipulative behavior, and pathological lying.

What causes a person to become antisocial? It seems that both genetics and the environment play a role. Certain factors in the home may increase a child's risk, such as being abused or neglected. While there are therapy programs and medications available to help with other conditions like depression, antisocial personality disorder is challenging to treat, especially considering that the person may also have an alcohol or drug abuse problem.

Other Factors    TOP

Researchers are also particularly interested in why people commit violent crime. Studies have shown that juveniles and adults who were abused as children are more likely to be arrested for committing a violent act. Some, but not all, evidence supports the idea that having a history of head trauma is associated with violence. What does seem clear is that the factors that lead a person to violence are complex, involving genetics, the environment, and issues relating to physical and mental health. Early intervention may be the key to lowering a child's risk of committing a crime as a teen or as an adult.

RESOURCES:

National Institute of Mental Health
http://www.nimh.nih.gov

CANADIAN RESOURCES:

Canadian Mental Health Association
http://www.ontario.cmha.ca
Canadian Psychiatric Association
http://www.cpa-apc.org

References:

Antisocial personality disorder. NHS Choices website. Available at:
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Updated July 8, 2013. Accessed July 6, 2015.
Loosen PT, Purdon SE, Pavlou SN. Effects on behavior of modulation of gonadal function in men with gonatropin-releasing hormone antagonists. Am J Psychiatry. 1994;151:2.
Mild testosterone reduction affective against aggression? Crime Times website. Available at:
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Accessed July 6, 2015.
Quick facts about the bureau of prisons. Federal Bureau of Prisons website. Available at:
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Accessed July 6, 2015.
Traumatic brain injury in prisons and jails: an unrecognized problem. Centers for Disease Control and Prevention website. Available at:
...(Click grey area to select URL)
Accessed July 6, 2015.
Risk and protective factors of child delinquency. National Criminal Justice Reference Service website. Available at: https://www.ncjrs.gov/pdffiles1/ojjdp/193409.pdf. Published April 2003. Accessed July 6, 2015.
Where personality goes awry. American Psychological Association website. Available at: .
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Published March 2004. Accessed July 6, 2015.
Last reviewed June 2015 by Michael Woods, MD
Last Updated: 9/12/2013

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