What is the current percentage of low-birth-weight neonates in the United States?

What do the results of the epidemiological studies tell us about changes over time in the frequency of depression?

a. Rates of depression appear to be decreasing. b. Rates of bipolar disorder appear to be increasing. c. Rates of depression appear to be increasing and with earlier onset. d. Rates of depression appear to be increasing but with later onset.

According to the research on prospective memory, elderly people

a. consistently make more errors than younger people. b. typically make more errors than younger people. c. make about the same number of errors as younger people. d. make about the same number of errors on real-life tasks, but more errors on tasks that are low in ecological validity.