Bobby's Parents Want Him to Stop Drawing on the Walls

question 50

Multiple Choice

Bobby's parents want him to stop drawing on the walls. So for a few weeks they pay him to draw on the walls, then stop paying him. Sure enough, when they stop paying, he stops drawing. Which principle did his parents make use of?

• A) homeostasis
• B) Maslow's hierarchy of needs
• C) overjustification effect
• D) externality hypothesis

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