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AGGREGATE EXPENDITURE DETERMINANT: A ceteris paribus factor that affects aggregate expenditures, but which is assumed constant when the aggregate expenditure line is constructed. Changes in any of the aggregate expenditures determinants cause the aggregate expenditure line to shift. While a wide variety of specific ceteris paribus factors can cause the aggregate expenditure line to shift, it's usually most convenient to group them into the four, broad expenditure categories -- consumption, investment, government purchases, and net exports. The reason is that changes in these expenditures are the direct cause of shifts in the aggregate expenditure line. If any determinant affects aggregate expenditures it MUST affect one of these four expenditures.
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                           SAVING LINE: A graphical depiction of the relation between household sector saving and income. The saving line is closely related to the consumption line that forms one of the key building blocks for Keynesian economics. A saving line is characterized by vertical intercept, which indicates autonomous saving, and slope, which is the marginal propensity to save and indicates induced saving. The injections-leakages model used in Keynesian economics is based on the saving line. The saving',500,400)">saving line, also termed propensity-to-save line or saving function, shows the relation between saving and income for the household sector. The income measure commonly used is national income or disposable income. Occasionally a measure of aggregate production, such as gross domestic product, is used instead.The purpose of the saving line is to graphically illustrate the basic saving-income relation for the household sector, which is the foundation of the injections-leakages model used in Keynesian economics. Two basic types of saving are indicated by the saving line. Autonomous saving is the vertical intercept, or Y-intercept, of the saving line. Induced saving is the slope of the saving line. Of no small importance, the slope of the saving line is also the marginal propensity to save (MPS). | Saving Line | 
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A representative saving line is presented in the exhibit to the right. This red line, labeled S in the exhibit is positively sloped, indicating that greater levels of income generate greater saving by the household sector. This positive relation corresponds to the fundamental psychological law of Keynesian economics.The two primary characteristics of the saving line are slope and intercept: - Slope: The slope of the saving line presented here is positive, but less than one. In fact, the slope of the saving line is numerically equal to the marginal propensity to save. In this case the slope is equal to 0.25. The positive slope reflects induced saving--more income means more saving. It also reflects the basic Keynesian psychological law. Click the [Slope] button to illustrate.
- Intercept: The saving line intersects the vertical axis at a value of -$1 trillion. This intersection indicates autonomous saving--saving unrelated to income. Autonomous saving is usually negative, indicating dissaving. This occurs because autonomous consumption is positive. Click the [Intercept] button to illustrate.
Note that the level of income (and production) generated by full employment of resources is NOT indicated in this exhibit. Full employment could correspond with $2 trillion of income or $20 trillion. There is no way of knowing. This is particularly important when injections-leakages model, used to identified equilibrium, is derived based on the saving line.
Recommended Citation:SAVING LINE, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2018. [Accessed: June 22, 2018].
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RED AGGRESSERINE
[What's This?]
Today, you are likely to spend a great deal of time calling an endless list of 800 numbers looking to buy either an instructional DVD on learning to the play the oboe or a small, foam rubber football. Be on the lookout for slow moving vehicles with darkened windows.
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The word "fiscal" is derived from a Latin word meaning "moneybag."
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"Whenever you fall, pick up something. " -- Oswald Avery, scientist
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SLLN
Strong Law of Large Numbers
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