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WANTS AND NEEDS: These are the unfulfilled desires that motivate human behavior and that when satisfied improve human well-being. They include both physiological or biological requirements for maintaining life (needs) and the psychological desires which make life more enjoyable (wants). However, when push comes to shove, and the nitty gets down to the gritty, it matters very little to markets if people need goods or want goods, so long as they are motivated to buy the goods to satisfy wants and needs.
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TWO-SECTOR INJECTIONS-LEAKAGES MODEL A variation of the Keynesian injections-leakages model that includes the two private sectors, the household sector and the business sector. This variation, often termed the saving-investment model or private 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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In the late 1800s and early 1900s, almost 2 million children were employed as factory workers.
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"Don't be afraid if things seem difficult in the beginning. That's only the initial impression. The important thing is not to retreat; you have to master yourself." -- Olga Korbut, Gymnast
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CBOE
Chicago Board Options Exchange
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