Cluster B personality disorders are best characterized by which of the following?

Cluster B personality disorders, which include conditions such as borderline, narcissistic, histrionic, and antisocial personality disorders, are indeed best characterized by dramatic and overly emotional behavior. Individuals with these disorders often display intense emotions, erratic moods, and behaviors that can be flamboyant or unpredictable.

For instance, someone with borderline personality disorder might have extreme reactions to perceived abandonment, while a person with histrionic personality disorder may seek attention through exaggerated emotions or theatrical behavior. This characteristic emotional volatility distinguishes them from other clusters of personality disorders.

The other choices reflect traits that are not typically associated with Cluster B disorders. Stable and predictable behavior is more aligned with other personality pathology classifications, while introversion typically pertains to Cluster A disorders and compulsive behaviors are associated with Cluster C personality disorders, such as obsessive-compulsive personality disorder. Therefore, the essence of Cluster B is fundamentally rooted in its dramatic and emotional nature.