Which of the following diagnostic criteria define borderline personality disorder? Select all that apply.

Borderline personality disorder is marked by intense instability in relationships, affect, and self-image. Clients often experience rapid shifts in emotional states, impulsivity, and chronic fears of abandonment. A hallmark feature is splitting, a primitive defense mechanism where individuals categorize others as entirely good or entirely bad. This black-and-white thinking leads to idealization and devaluation, often directed toward caregivers. Their interpersonal relationships are chaotic, and they may alternate between clinging and rejecting behaviors based on perceived threats to attachment.

Rationale for correct answer

A. The statement reflects splitting, where the client idealizes one nurse while devaluing another. This is a classic interpersonal pattern in borderline personality disorder, driven by unstable affect and fear of abandonment. The exaggerated praise and simultaneous criticism are attempts to manage internal emotional turmoil and maintain perceived security in relationships.

Rationale for incorrect answers

B. Schizoid personality disorder is characterized by detachment and limited emotional expression. Individuals with this disorder avoid close relationships and are unlikely to express strong opinions or emotional comparisons between caregivers.

C. Passive-aggressive traits involve indirect resistance and covert hostility, such as procrastination or intentional inefficiency. The client’s statement lacks the subtle defiance or undermining typical of passive-aggressive behavior.

D. Paranoid personality disorder involves pervasive distrust and suspicion. While these individuals may criticize others, their statements are typically rooted in fear of harm or betrayal, not emotional idealization or relational splitting.

Take Home Points

• Splitting is a hallmark defense mechanism in borderline personality disorder, leading to idealization and devaluation.
• Borderline clients often express intense emotional reactions and unstable interpersonal attachments.
• Schizoid personality disorder presents with emotional detachment and limited interpersonal engagement.
• Paranoid personality disorder involves mistrust and suspicion, not emotional instability or relational idealization.

Antisocial personality disorder is characterized by a pervasive pattern of disregard for the rights of others, impulsivity, and lack of remorse. Individuals often exhibit manipulative behavior, superficial charm, and poor empathy. They frequently externalize blame and show limited insight into their actions. Their defense mechanisms are typically primitive and serve to deflect responsibility or justify harmful behavior. These individuals may engage in criminal acts, violate social norms, and rationalize their behavior to avoid guilt or accountability.

Rationale for correct answer

B. Individuals with antisocial traits often use projection to attribute their own unacceptable impulses or behaviors to others. This allows them to avoid accountability and maintain a distorted self-image. In clinical settings, they may accuse others of being manipulative or dishonest, reflecting their own tendencies. Projection is a primitive defense mechanism that aligns with the psychological immaturity seen in antisocial personality disorder.

Rationale for incorrect answers

A. Compensation involves making up for perceived deficiencies in one area by excelling in another. It is more common in individuals with intact self-awareness and goal-directed behavior, not in antisocial traits where denial and blame-shifting dominate.

C. Sublimation is a mature defense mechanism where unacceptable impulses are transformed into socially acceptable actions. Antisocial individuals rarely channel aggression or deceit into constructive outlets, making sublimation inconsistent with their behavioral profile.

D. Rationalization is a higher-level defense used to justify actions with logical explanations. While antisocial individuals may attempt to explain their behavior, their primary defense is more primitive and externalizing, such as projection, rather than internal justification.

Take Home Points

• Antisocial personality disorder involves primitive defenses like projection, externalizing blame, and lack of remorse.
• Projection is common in personality disorders with poor insight and impaired interpersonal functioning.
• Sublimation and compensation are mature defenses not typically used by individuals with antisocial traits.
• Differentiating antisocial personality disorder from narcissistic or borderline traits requires attention to defense mechanisms and interpersonal patterns.