Consumption function

The document discusses the consumption function, which models the relationship between total consumption and national income. Consumption is defined as an increasing function of income. The average propensity to consume (APC) is the ratio of consumption to income and declines as income rises. The marginal propensity to consume (MPC) is the change in consumption from a change in income and is assumed to be positive but less than 1. Keynes' psychological law of consumption states that consumption increases less than proportionately to increases in income. Determinants of consumption include subjective psychological factors as well as objective factors like wages, fiscal policy, and interest rates. Theories like Duesenberry's relative income hypothesis model consumption as interdependent and influenced by socialRead less