Which of the "Big Five" major clusters of personality traits/characteristics pertains to the degree to which a person is moody, anxious, and self-critical?

In the first year of life, infants accumulate fat. This helps the infant ____

a. maintain a constant body temperature b. maintain high energy levels c. build muscle d. create brain cells

What kind of evidence is based on one or two instances of a phenomenon, haphazardly discovered or encountered?

a) scientific b) experimental c) anecdotal d) unethical