XYY Theory

Question 1

How does Jacob’s XYY syndrome relate to criminality?

Answer 1

Jacob’s theory suggests that the XYY syndrome may be linked to increased aggression and criminal behavior due to chromosomal abnormalities.

Question 2

What role does genetic theory play in the discussion of the death penalty?

Answer 2

Genetic theories, like Jacob’s XYY syndrome, suggest that if criminality is biologically determined, rehabilitation may be ineffective, influencing views on capital punishment.

Question 3

What behavioral traits are commonly associated with individuals having XYY syndrome?

Answer 3

Individuals with XYY syndrome may exhibit traits such as tall stature, acne during adolescence, learning disabilities, impulsivity, and increased aggression.

Question 4

Strengths of the XYY gene

Answer 4

Some studies have indicated that aggressive or violent behavior is partly determined by genetic factors.

Jacob’s 1965 research indicated that XYY males were overrepresented in the prison population, suggesting a link to criminality.

Question 5

Weakness to XYY

Answer 5

XYY syndrome is a limited explanation, as not all males with XYY are aggressive or violent, and not all violent criminals have XYY.