Test yourself repeatedly throughout your studies. This will not only help you figure out what you know and don't know; the testing itself will help you learn and remember the information more effectively thanks to the testing effect.
A personality disorder, such as antisocial personality, is characterized by
a. depression.
b. hallucinations.
c. inflexible and enduring behavior patterns that impair social functioning.
d. an elevated level of autonomic nervous system arousal.