What characteristic is most commonly attributed to individuals with mutations in the MAOA gene?

The characteristic most commonly attributed to individuals with mutations in the MAOA gene is a higher risk of aggressive behavior. The MAOA gene is responsible for encoding an enzyme that breaks down neurotransmitters such as serotonin, norepinephrine, and dopamine in the brain. Mutations or deficiencies in this gene can lead to imbalances in these neurotransmitters, which are critical in regulating mood and behavior.

Research has linked variations in the MAOA gene, particularly the “warrior gene” variant, to an increased propensity for aggressive or violent behavior, especially when individuals experience adverse environmental conditions or stressors. This connection highlights how genetic factors can interact with environmental influences to affect behavior.

The other characteristics mentioned, such as increased empathy, improved social skills, and enhanced cognitive abilities, are not typically associated with mutations in the MAOA gene. In fact, the research primarily points towards the potential negative behavioral outcomes linked to these mutations rather than positive social or cognitive traits. This understanding emphasizes the complex nature of genetic factors influencing behavior and the importance of considering both biology and environment in psychological assessments.