Initial Response: Choose a product which you are familiar with.  Using the internet for research (please cite your source), what is the price elasticity of demand for this product or group of products? What does that mean with respect to a 10% increase in the price of this good?  What happens to quantity demanded?  

Which of the 4 determinants of price elasticity of demand do you believe drives this outcome about the good’s price elasticity?  If there is more than one determining factor, please explain your reasoning.  [for many goods, all of the 4 determinants come into play – I just want you to choose the one or two that you believe are most relevant)