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PPF: The abbreviation for production possibilities frontier, which is a curve that illustrates the production possibilities for the economy. A production possibilities frontier represents the boundary or frontier of the economy's production capabilities. That's why it's termed a production possibilities frontier (or PPF). As a frontier, it is the maximum production possible given existing (fixed) resources and technology. Producing on the curve means resources are fully employed, while producing inside the curve means resources are unemployed. The law of increasing opportunity cost is what gives the curve its distinctive convex shape.

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UTILITY: The satisfaction of wants and needs obtained from the use or consumption of goods and services. The terms utility and satisfaction are, for the most part, used interchangeably in economics. Two other somewhat technical economic terms frequently used to capture this notion are welfare and well-being. Whichever term is used, the underlying concept is the same: To what extent are unlimited wants and needs fulfilled using the goods and services produced from society's limited resources.

     See also | satisfaction | consumption | wants | needs | unlimited wants and needs | welfare | consumer demand theory | law of demand | scarcity | util | utility maximization |


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NET-EXPORT EFFECT

A change in aggregate expenditures on real production, especially net exports from the foreign sector, that results because a change in the price level alters the relative prices of exports and imports. The net-export effect, also termed the international-substitution effect, is one of three effects underlying the negative slope of the aggregate demand curve associated with a movement along the aggregate demand curve and a change in aggregate expenditures. The other two are real-balance effect and interest-rate effect. The net-export effect is somewhat analogous to the substitution effect underlying the negative slope of the market demand curve.

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