Suzie notices that her daughter, Nina, loves to play piano. Suzie decides to encourage her further by promising to pay her a dollar for every extra hour of piano practice in the evening. Chances are that Nina's intrinsic interest in playing the piano is likely to
A) decrease.
B) increase.
C) remain unchanged.
D) rise sharply.
Question 2
Fatima promises to give her son a cookie for each hour that he studies math. As a result, her son could very well become
A) more interested in math.
B) less interested in math.
C) less interested in cookies.
D) resistant to her instructions.
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