Piaget's term for the knowledge that an object exists even when it is out of sight is:

Meghan, a four-year-old, spends hours drawing with colored crayons. She finds this activity very enjoyable. For Meghan, coloring is maintained by __________

a) incentive. b) intrinsic motivation. c) extrinsic motivation. d) biological motives.

Based on the studies conducted by Nolan and colleagues (2008) and Goldstein and colleagues (2008), which approach seems to be most effective at motivating people to behave in ways that are more environmentally friendly?

a. operant conditioning b. informational social influence c. cognitive dissonance d. guilt and fear appeals