Brain scans of people with schizophrenia show a. abnormally high brain activity in the frontal lobes. b. an increase in the brain waves that reflect synchronized neural firing. c. abnormal activity in multiple brain areas. d. decreased activity in the amygdala. e. a lack of dopamine receptors.

Antisocial personality disorder is most often characterized by a. violence. b. lack of conscience. c. mood swings. d. unexplained physical symptoms. e. committing serial murders.

Jessica and Harper are identical twins. Jessica has been diagnosed with a psychological disorder. Harper is most at risk for developing the same disorder if Jessica is diagnosed with a. agoraphobia. b. antisocial personality disorder. c. bipolar disorder. d. bulimia nervosa. e. schizophrenia.

Karl, a 45-year-old barber, had worked in the same shop his entire life. Last year he disappeared and was found working as a car mechanic known as "K" 300 miles away, saying he had no memory of his former life. Karl's clinical diagnosis would most likely be a. schizophrenia. b. antisocial personality disorder. c. a fugue state. d. a conversion disorder. e. dissociative identity disorder.

Which personality disorder is associated with a lack of regret over violating others’ rights? a. Antisocial personality disorder. b. Avoidant personality disorder. c. Schizoid personality disorder. d. Histrionic personality disorder. e. Narcissistic personality disorder.

According to research, which of the following has been identified as an early warning sign of schizophrenia? a. Emotional predictability. b. Poor peer relations and solo play. c. Long attention span. d. Good muscle coordination. e. High birth weight.