Which personality disorder is characterized by social aloofness and a limited range of emotional expression?

The personality disorder characterized by social aloofness and a limited range of emotional expression is schizoid personality disorder. Individuals with this disorder typically display a pervasive pattern of detachment from social relationships and exhibit a restricted range of emotional expression in interpersonal settings. They often appear indifferent to both social relationships and societal norms, showing little interest in forming close relationships, including with family members. Their emotional expression is frequently flat or inappropriate, which further contributes to their social isolation. This significant detachment and emotional unresponsiveness are central features that define schizoid personality disorder.

In contrast, other personality disorders mentioned, such as borderline, narcissistic, and antisocial, are associated with markedly different patterns of behavior and emotional responses. Borderline personality disorder involves intense emotional experiences and unstable relationships, narcissistic personality disorder is characterized by a need for admiration and a lack of empathy, and antisocial personality disorder is marked by a disregard for others' rights and often includes manipulative or deceitful behaviors. Thus, these disorders do not align with the defining features of social aloofness and limited emotional expression seen in schizoid personality disorder.