Shelby, an avid bird watcher, explains that birds build nests because that is their nature. Shelby advocates ________ theory

According to the text, what is the best estimate of the number of people with a mental disorder who improve without any professional treatment?

a. one-tenth b. one-third c. one-half d. three-quarters

A middle-aged individual shows many of the negative symptoms of schizophrenia and at the same time often appears profoundly depressed. The symptoms have lasted almost a year. This is an example of:

A) shared psychotic disorder. B) undifferentiated type of schizophrenia. C) schizophreniform disorder. D) schizoaffective disorder.