Final answer:
People with Borderline Personality Disorder and Antisocial Personality Disorder share genetic predispositions towards impulsivity and aggression. Research suggests a significant genetic component to the behaviors associated with both disorders. Although BPD and ASPD are distinct, their similar behaviors can stem from inherited traits.
Step-by-step explanation:
Individuals with Borderline Personality Disorder (BPD) and those with Antisocial Personality Disorder (ASPD) share a biological factor related to genetic and environmental influences on their behaviors. Research has provided evidence suggesting a heritable component to both BPD and ASPD. A meta-analysis by Rhee and Waldman (2002) demonstrated that antisocial behavior has significant genetic underpinnings, an insight that also applies to BPD based on studies like those by Livesley (2008) and Livesley & Jang (2008), which have moved towards a genetically-informed model of BPD.
The shared biological factor between BPD and ASPD notably includes a predisposition towards impulsivity and aggression, which may be influenced by genetic factors. This predisposition can result in similar patterns of behavior that are symptomatic of both disorders, despite their unique diagnostic criteria. The research indicates that while the expression of these disorders varies, they can both be affected by inherited traits, which are further molded by an individual's environment and experiences.