In late adulthood, the amount of time spent in the lightest sleep increases, while time spent in the deepest sleep and REM sleep decreases.

There are almost no well known people who suffer from

(a) major depression (b) manic depression (c) affective disorders (d) phobias (e) schizophrenia

Which of the following proposed a hierarchy of motives?

a. Freud b. Maslow c. Horner d. Skinner