CJ 102 Unit 8 Worksheet

Student Name:

After completing the readings, answer the following questions:

Describe the biological and psychological factors that contribute to crime and deviance within society today.

A number of biological factors can contribute to crime/deviance including:

Diet- An improper diet can lead to a poorly functioning brain and chemical imbalances.

Hypoglycemia- Low blood sugar can lead to headaches, irritability, confusion, etc.

Hormones- Increased testosterone levels in males and PMS in females can lead to aggressive behaviors.

Lead exposure- Individuals can suffer from mental disorders, and the effects are not reversible.

Environmental contaminants- These can damage the brain and cause developmental and cognitive defects in children which can lead to problems learning.

Structure and chemistry of the brain can lead to irrational behavior.

Anti-social behaviors can be inherited through genetics and a parent’s criminal behavior could potentially be passed on to their children.

Evolution suggests that aggressive humans survived over those who were passive. These aggressive traits could be passed on to their descendants.

(Siegel, 2017, p 130-134)

What does twin behavior tell you about the causes of criminal behavior?

Siegel (2017, p. 135), explains that research suggests that genetics are largely responsible for criminal behavior.

What is the difference between MZ and DZ twins?

MZ twins are identical, and DZ twins are fraternal.

How does the difference between MZ and DZ twins relate to criminal behavior?

If one MZ twin follows the law, so will the other. Identical (MZ) twins are three times more likely to commit crime that fraternal (DZ) twins.

What the 3 primary sources of aggressive acts?

Mass media- exposure to violent TV, movies, games, etc. makes individuals more likely to behave in the same manner that they see in the media and more likely to justify their actions.

Family interaction- Parents that are aggressive have children that use the same behaviors with others.

Environment- Individuals that see and hear violence on a daily basis will be more prone to the same behavior than individuals that live in areas that have lower crime rates.

(Siegel, 2017, p 139)