Final answer:
Abnormal antisocial impulsive behaviour is indicative of Antisocial personality disorder, characterized by a disregard for social norms, deceitfulness, and a lack of remorse. Impulsive behaviour is a distinctive feature of this disorder.
Step-by-step explanation:
The question pertains to identifying which personality disorder is characterized by abnormal antisocial impulsive behaviour. The correct answer is a) Antisocial personality disorder. This disorder involves a long-term pattern of disregarding or violating the rights of others. Individuals with antisocial personality disorder tend to exhibit behaviors that are against social norms, including deceitfulness, impulsivity, and a lack of remorse for their actions. Impulsive behaviour is a characteristic trait of this disorder, and it is often accompanied by aggression and failure to conform to lawful behaviors.
Contrastingly, Borderline personality disorder includes symptoms such as instability in relationships, self-image, and affects, as well as marked impulsivity. Narcissistic personality disorder centers on patterns of grandiosity, need for admiration, and lack of empathy. Schizoid personality disorder is characterized by a lack of interest in social relationships, a tendency towards a solitary lifestyle, and emotional coldness.