Of course, two general changes in demand are possible, increase or decrease. However, there are many factors that can bring about these changes. The table below is a quick review of some possible causes of a change in demand.
|Demand Increase||Demand Decrease|
|Income Increase-Normal Good||Income Decrease-Normal Good|
|Income Decrease-Inferior Good||Income Increase-Inferior Good|
|Price Increase for Substitute||Price Decrease for Substitute|
|Price Decrease for Complement||Price Increase for Complement|
|Expect Future Price Increase||Expect Future Price Decrease|
|Becomes More Fashionable||Becomes Less Fashionable|