DEMAND WORKSHEET.docx Download DEMAND WORKSHEET.docx (40.7 KB) Determinant of demand Demand Explanation increases or decreases? Population increases Increase More people in any economy or market will want to have their needs met. Population decreases Increase in most peoples' income Decrease in most peoples' income Price of substitute increases Price of substitute decreases Price of complementary good increases Price of complimentary good decreases Product becomes a popular fad (change in taste of buyers) Product now out of fashion (change in taste of buyers) There is an expectation that the price of the product will soon fall There is a fear that the economy will go into a recession where many firms will fail and unemployment will increase