Final answer:
Cluster A personality disorders involve odd or eccentric behaviors and ways of thinking. They include Paranoid Personality Disorder, Schizoid Personality Disorder, and Schizotypal Personality Disorder.
Step-by-step explanation:
Cluster A personality disorders involve odd or eccentric behaviors and ways of thinking. These disorders include Paranoid Personality Disorder, Schizoid Personality Disorder, and Schizotypal Personality Disorder. People with Cluster A personality disorders may have impaired social skills, engage in repetitive motor behaviors, have a strict adherence to certain rituals, or have a preoccupation with specific subjects.