INFERIOR GOOD: A good for which an increase in income causes a decrease in demand, or a leftward shift in the demand curve. If demand decreases as income increases, it is an inferior good, or a good with a negative income elasticity of demand. An inferior good is one of two alternatives falling within the income determinant of demand. The other is a normal good. See also | good | income | demand | demand curve | income, demand determinant | income elasticity of demand | normal good |
