Which of the following symptoms of schizophrenia is illustrated by the people in the video? One person suffers auditory hallucinations, perceiving sounds that have no real auditory source.
One person shows signs of catatonic excitement after becoming suddenly agitated, fidgety, and shouting aggressively at a psychologist.
One person shows signs of a catatonic stupor, or of being totally motionless and unaware of the surrounding environment.
One person shows the emotional disturbances accompanying schizophrenia by exhibiting a flat affect or an absence of any emotion.

Based on statements made in the video, which of the following conclusions can be drawn about schizophrenia?

People with schizophrenia are suffering from an emotional illness.
Medical and psychological treatments do nothing to alleviate the symptoms of schizophrenia.
Schizophrenia is a disease of the brain.
Researchers have found no association between chemical changes in the brain and the development of schizophrenia.