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INCOME, DEMAND DETERMINANT: One of the five demand determinants assumed constant when a demand curve is constructed, and that shift the demand curve when they change. Income affects demand differently for normal goods and inferior goods. A normal good, the name indicates, is affected by income much as you might expect. Additional income allows buyers to purchase more normal goods, thus demand increases with an increase in income. The demand for an inferior good is affected exactly opposite. An increase in income causes a decrease in the demand for an inferior good. Buyers decide to buy less of an inferior good when they have additional income.

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Lesson 2: Economic Science | Unit 5: Cause and Effect Page: 20 of 20

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  • How and why the scientific method seeks to identify the fundamental cause and effect links that constitute scientific principles.
  • Why correlation between events is the first step when identifying cause and effect links.
  • The importance of considering time proximity and time sequence when identifying cause and effect links.
  • How a simple example dealing with the effect of advertising on the production and sales of shoes involves several different cause and effect links.

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ADVERSE SELECTION

An inefficient, bad, or adverse outcome of a market exchange that results because buyers and/or sellers make decisions based on asymmetric information. This commonly results in a market that exchanges a lesser quality good, what is termed the market for lemons. Two related problems resulting from asymmetric information are moral hazard and the principal-agent problem. Two methods of lessoning the problem of adverse selection are signalling and screening.

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Today, you are likely to spend a great deal of time at a flea market hoping to buy either a birthday greeting card for your grandmother or a coffee cup commemorating yesterday. Be on the lookout for vindictive digital clocks with revenge on their minds.
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In 1914, Ford paid workers who were age 22 or older $5 per day -- double the average wage offered by other car factories.
"Experience keeps a dear school, but fools will learn in no other. "

-- Benjamin Franklin

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