Read the highlighted portions of "Giffen Behavior: Theory and Evidence" (Jensen and Miller 2007). 1. The authors make a distinction between a "Giffen good" vs. "Giffen behavior". What is the difference, and why do the authors focus on identifying Giffen behavior rather than identifying a Giffen good? 2. Summarize the researcher's experiment. 3. What are the circumstances that can give rise to Giffen behavior? 4. How might this research be useful for improving nutrition programs and assistance?