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CHANGE IN AGGREGATE DEMAND: A shift of the aggregate demand curve caused by a change in one of the aggregate demand determinants. In essence, a change in aggregate demand is caused by any factor affecting aggregate demand EXCEPT the price level. This concept should be contrasted directly with a change in aggregate expenditures. You might also want to review the terms change in quantity demanded and change in demand, as well. The change in aggregate demand is comparable to the change in market demand. A change in aggregate demand is a change in ALL price level-aggregate expenditure combinations, meaning that each price level is matched up with a different aggregate expenditure (which is illustrated as a shift of the aggregate demand curve). This change in aggregate demand is caused by a change in any of the aggregate demand determinants. In contrast, a change in aggregate expenditures is a change from one price level-aggregate expenditure combination to the another (which is illustrated as a movement along a given aggregate demand curve).

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AXIOM:

A basic precondition or assumption underlying a theory. Axioms are basic, unverifiable world view assumptions--including personal beliefs, political views, and cultural values--that form the foundation of a theory.
An axiom is a statement or notion that is unprovable, but presumed to be true. Axioms cannot be verified directly with real world data, and as such are largely accepted on faith. They comprise the world view of a scientific theory. Many axioms reflect religious beliefs, political ideologies, and views about the basic nature of humanity and the universe. Belief in a supreme, omnipotent, omniscience being is one such axiom. The notion that people are basically good (or bad) is another. The presumption that the universe abides by cause-and-effect relations is a key axiom for all of science.

While axioms cannot be verified directly with real world data, as is the case for hypotheses, they can be "checked" indirectly. Suppose, for example, dozens of theories that employ the same axiom generate hundreds of hypotheses that are refuted by real world data. The problem might rest with this axiom. If this axiom is then replaced with an alternative, and the subsequent hypotheses are supported by data, then the validity of the original axiom is even more suspect.

<= AVERAGE VARIABLE COST CURVE


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AXIOM, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2017. [Accessed: May 22, 2017].


Check Out These Related Terms...

     | assumption | cause and effect | ceteris paribus | theory | world view | model | principle | hypothesis | verification | variables |


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     | scientific method | abstraction |


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APLS

State of the ECONOMY

Producer Price Index Final Demand
November 2016
110.8
Up 0.4% from Oct. 2016 Soure: BLS.gov

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PURPLE SMARPHIN
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Today, you are likely to spend a great deal of time calling an endless list of 800 numbers seeking to buy either a T-shirt commemorating the first day of winter or software that won't crash your computer. Be on the lookout for poorly written technical manuals.
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The first "Black Friday" on record, a friday marked by a major financial catastrophe, occurred on September 24, 1869 -- A FRIDAY -- when an attempted cornering of the gold market induced a financial crises and economy-wide depression.
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