Which characteristics form what's known as the dark triad?

Professor Boyd suggests that children in every culture can distinguish between costs and benefits because humans have an inborn understanding of economics. The professor's suggestion is most consistent with the views of:

a. Plato. b. Aristotle. c. Francis Bacon. d. John Locke.

According to Freud, infants given too much oral gratification are most likely to become ______

a. pessimistic and hostile b. optimistic and dependent on others c. messy and destructive d. stingy and excessively orderly