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KEYNESIAN THEORY: A theory of macroeconomics developed by John Maynard Keynes built on the proposition that aggregate demand is the primary source of business cycle instability, especially recessions. The basic structure of the Keynesian theory of economics was initially presented in Keynes' book The General Theory of Employment, Interest, and Money (1936).

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SLOPE, INVESTMENT LINE: The positive slope of the investment line is also termed the marginal propensity to invest (MPI). This slope is greater than zero but less than one, reflecting induced investment. The slope of the investment line affects the slope of the aggregate expenditures line and thus also affects the magnitude of the multiplier process.

     See also | investment line | intercept, investment line | consumption line | slope, consumption line | slope, government purchases line | slope, net exports line | induced investment | autonomous investment | marginal propensity to invest |


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AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE

A scientific society whose main mission is to advance science and innovation throughout the world. The American Association for the Advancement of Science (AAAS for short) publishes one of the most respected scientific magazines called Science. The association and magazine have nearly 140,000 individual and institutional subscribers, plus 272 affiliated organizations in more than 130 countries, serving a total of 10 million individuals. The American Association for the Advancement of Science was founded in 1848 to represent all disciplines of science and to support scientific exchange and discussion of science and society issues.

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