Final answer:
Schizotypal personality disorder involves peculiar behaviors and odd beliefs while schizoid personality disorder is characterized by detachment from social relationships.
Step-by-step explanation:
Both schizotypal personality disorder and schizoid personality disorder are classified as cluster A personality disorders, which are characterized by odd or eccentric behavior. However, there are differences between the two.
Schizotypal personality disorder involves peculiar behaviors, eccentric thinking, and odd beliefs. Individuals with schizotypal personality disorder often experience strange perceptual experiences, such as magical thinking or belief in supernatural powers. They may also have difficulties forming and maintaining close relationships.
On the other hand, schizoid personality disorder is characterized by detachment from social relationships and limited emotional expression. People with this disorder tend to prefer isolation and have little interest in forming relationships with others.