Which cluster of Axis II disorders is characterized by odd, eccentric, or isolative behaviors?

The correct answer is Cluster A, which encompasses a group of personality disorders that are characterized primarily by odd, eccentric, or isolative behaviors. These disorders include Paranoid Personality Disorder, Schizoid Personality Disorder, and Schizotypal Personality Disorder. Individuals with these disorders often display unusual thinking patterns, social awkwardness, and a tendency toward isolation, which differentiates them from other personality disorder clusters.

Cluster B, on the other hand, includes disorders that are characterized by dramatic, emotional, or erratic behaviors, such as Antisocial Personality Disorder and Borderline Personality Disorder. These disorders often involve more intense interpersonal issues.

Cluster C is focused on anxious and fearful behaviors, including Avoidant Personality Disorder and Obsessive-Compulsive Personality Disorder, which highlight feelings of anxiety and avoidance rather than the eccentricity seen in Cluster A.

Cluster D is not formally recognized in the standard classifications of personality disorders outlined in the DSM (Diagnostic and Statistical Manual of Mental Disorders), making it an invalid option in this context. The categorization into A, B, and C is established, with Cluster A distinctly set apart due to its unique behavioral characteristics.