When obtaining information from large numbers of people from written questionnaires, one is using the ______ method

Which of the following statements MOST accurately reflects current thinking about psychosis and schizophrenia?

A) Psychotic behavior is best labeled as schizophrenia. B) Schizophrenia and psychosis are two distinctly different syndromes. C) People with different diagnoses can exhibit psychosis; it's not limited to schizophrenia. D) People with bipolar disorder or major depression don't exhibit psychosis; only people with schizophrenia do.

What percentage of persons over 85 years old report that their visual problems are serious enough to interfere with their daily lives?

a. 10% b. 20% c. 30% d. 40%