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SAVING-INVESTMENT EQUALITY: A classical economic proposition stating that flexible prices ensure an equality between saving and investment. This equality is essential to obtain the classical economic conclusion that unrestricted markets achieve and maintain full employment. This is one of the three assumptions underlying classical economics. The other two assumptions are flexible prices and Say's law.

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Lesson 12: Business Cycles | Unit 2: A Simple Cycle Page: 11 of 26

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  • A business cycle as the pattern of expanding and contracting economic activity relative to the long-run, full-employment trend.
  • A business cycle contraction, or recession, which is officially designated as at least six months of declining economic activity.
  • A business cycle trough, which is turning point between a contraction and an expansion.
  • A business cycle expansion, which is a period of increasing aggregate economic activity, and the early recovery part of an expansion.
  • A business cycle peak, which is the turning point between an expansion and a contraction.

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SAVING-INVESTMENT MODEL

A variation of the Keynesian injections-leakages model that includes the two private sectors, the household sector and the business sector. This variation, more formally termed the two-sector injections-leakages model, captures the interaction between induced saving (and indirectly induced consumption expenditures) and autonomous investment expenditures. This model provides an alternative to the two-sector aggregate expenditures (Keynesian cross) analysis of the macroeconomy, including equilibrium, disequilibrium, and the multiplier. Equilibrium is identified as the intersection between the saving line and the investment line. Two related variations are the three-sector injections-leakages model and the four-sector injections-leakages model.

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Today, you are likely to spend a great deal of time calling an endless list of 800 numbers hoping to buy either a three-hole paper punch or decorative picture frames. Be on the lookout for fairy dust that tastes like salt.
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In the late 1800s and early 1900s, almost 2 million children were employed as factory workers.
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