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Reference.org
Consumption function
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<p>In <a href="/facts/Economics/HYctA2Dn">economics</a>, the consumption function describes a relationship between <a href="/facts/Consumption_(economics)/k3eeT8bw">consumption</a> and <a href="/facts/Disposable_and_discretionary_income/s07hDVV0">disposable income</a>. The concept is believed to have been introduced into <a href="/facts/Macroeconomics/4dcQAdCr">macroeconomics</a> by <a href="/facts/John_Maynard_Keynes/4otHjBRu">John Maynard Keynes</a> in 1936, who used it to develop the notion of a <a href="/facts/Fiscal_multiplier/GX6b2Dmb">government spending multiplier</a>. </p>