Genetic Predisposition Theory suggests that certain genetic traits or variations may increase an individual's likelihood of engaging in criminal behavior.

Biosocial Theory proposes that biological factors interact with environmental factors, such as poverty, abuse, and lack of opportunities, to shape criminal behavior.

Sociobiology examines how evolutionary processes and adaptations may influence criminal behavior, suggesting that certain behaviors may have been advantageous in ancestral environments.

Neurological Theory suggests that abnormalities or dysfunctions in brain structure or functioning, such as low levels of serotonin, may contribute to criminal behavior.

The Amygdala is a brain structure involved in emotional processing and fear conditioning, and its dysfunction has been linked to impulsive and aggressive behavior.

Endocrinological Theory suggests that hormonal imbalances, such as high levels of testosterone or low levels of serotonin, may contribute to criminal behavior.

Testosterone is a hormone associated with aggression, dominance, and risk-taking behavior, and high levels of testosterone have been linked to increased criminal behavior.

Physiognomy is a theory that suggests that physical characteristics, such as facial features or body type, can be used to predict criminal behavior.

Physiognomy proponents believed that thin lips indicated a lack of empathy and remorse, which were seen as characteristics associated with criminal behavior.

Physiognomy has been criticized for its lack of scientific evidence and its potential to lead to discrimination based on physical characteristics.

Biological theories have been criticized for ignoring social and environmental factors, oversimplifying complex behavior, and raising concerns about genetic determinism.

Sociobiology suggests that certain criminal behaviors may have evolved as adaptive strategies in ancestral environments.

Sociobiologists argue that theft may have been advantageous in ancestral environments where resources were scarce and competition for survival was intense.

Neurological Theory suggests that imbalances in brain chemistry, such as low levels of serotonin or dopamine, may contribute to criminal behavior.

Dopamine is a neurotransmitter associated with impulsivity, reward-seeking behavior, and risk-taking, and its dysregulation has been linked to criminal behavior.