Although the cause of antisocial personality disorder is unclear, some people do appear to have a genetic vulnerability. for example, twin and adoption studies indicate that biological relatives of those with antisocial and unemotional tendencies are at increased risk for

antisocial behavior

Explanation:

twin and adoption studies indicate that biological relatives of those with antisocial and unemotional tendencies are at increased risk for antisocial behavior. Such behaviors are categorized as disruptive acts focusing on hostility and intentional aggression toward others. Since many home and environmental factors can cause this, this has led to scientists being unclear as to what is the direct cause of Antisocial Personality disorder.