Lecture 6 pt.2

Question 1

Describe briefly how “the warrior gene” may be on/off.

Answer 1

The MAOA-L (“warrior gene”) can be turned on or off by environmental factors. Childhood abuse, trauma, or stress can activate it, increasing aggression, while a stable and supportive environment can prevent its negative effects.

Question 2

Describe possible influence of Toxoplasmosis on criminal behaviour.

Answer 2

Toxoplasma gondii, a parasite found in infected cat feces, can alter brain chemistry and increase impulsivity and risk-taking. Some studies suggest it may contribute to reckless behavior, aggression, and even higher crime rates

Question 2

Describe the defence strategy based on ‘the warrior gene’ hypothesis (Based on BBC “Are You Good or Evil”.)

Answer 2

Some defense lawyers argue that MAOA-L reduces impulse control, making defendants less responsible for violent crimes. This strategy suggests genetics and brain chemistry influenced their actions, potentially leading to reduced sentences.

Question 3

Describe how car accidents and prefrontal cortex damage may increase aggressive behaviour.

Answer 3

The prefrontal cortex controls impulse regulation and decision-making. Damage from car accidents or head injuries can reduce self-control, increase impulsivity, and lead to aggressive or violent behavior.