By the time we reach 80 years of age, our brain weights an average of 5% less than it did when we were younger adults

Many studies show that different forms of treatment often appear to work equally well; this point can be attributed to the fact that

a. most people want to get better. b. most people get better with or without treatment. c. different treatments still share many common factors. d. the research studies are very poorly done.

When looking at behavior of children who would later develop schizophrenia, these children were

a. more likely to be born premature. b. likely to show deficits in facial expressions and abnormal movements. c. more likely to have colic. d. no different from those children that would not later develop schizophrenia. e. more likely to have high sociability.