Mostly summarized from Gregory Mankiw’s Principles of Economics, 5th Ed. PART 6 The Economics of Labor Markets Chapter 20 of 36 Income Inequality and Poverty Section 7 of 20 … Evaluations of income distribution often give an incomplete view of inequality because these three are not considered: 1· in-kind transfers 2· economic life cycle 3· transitory versus permanent income … 3· Transitory (not permanent) versus permanent income Incomes vary over people's lives because of · predictable life cycle variation · random and transitory forces Transitory: For example, if this year there is frost damage to oranges in Florida, it · causes Florida orange growers’ incomes to fall temporarily · drives up orange prices nationwide · causes California orange growers’ incomes to rise temporarily However, next year the situation could reverse. … Permanent: A family's ability to buy goods depends mainly on its more predictable permanent income, which is its normal, or average, income. To measu...