According to Brendgan et al. (2005), which type of aggression has a stronger genetic component?

• A. Social aggression
• B. Physical aggression
• C. Reptilian aggression
• D. Emotional aggression

Answer: (B)

The assertion that physical aggression has a stronger genetic component is supported by research examining the heritability of aggressive behaviors. Studies have indicated that physical aggression, characterized by overt acts of violence or harm towards others, demonstrates more consistency and stability across different populations and contexts. This form of aggression is often linked to specific genetic variants and hormonal influences, such as testosterone levels, which can impact aggressive tendencies.

In contrast, other forms of aggression, like social or emotional aggression, may have significant environmental influences, such as upbringing, social learning, and situational factors. While these other forms of aggression can also have genetic components, they often display more variability and are shaped heavily by societal norms and experiences. The research suggests that physical aggression is more likely to be impacted by inherited biological predispositions, making it distinct in the context of heritability and genetics.