Google
Saturday 
April 21, 2018 

AmosWEB means Economics with a Touch of Whimsy!

AmosWEBWEB*pediaGLOSS*aramaECON*worldCLASS*portalQUIZ*tasticPED GuideXtra CrediteTutorA*PLS
ADJUSTMENT, LONG-RUN AGGREGATE MARKET: Disequilibrium in the long-run aggregate market induces changes in the price level that restore equilibrium. If the price level is above the long-run equilibrium price level, economy-wide product market surpluses cause the price level to fall. If the price level is below the long-run equilibrium price level, economy-wide product market shortages cause the price level to rise. In both cases long-run equilibrium is restored. Price level changes induce changes in aggregate expenditures but NOT changes in real production. The reason is that long-run aggregate supply is full-employment real production, which is unaffected by the price level.

Visit the GLOSS*arama


CONSUMPTION LINE:

A graphical depiction of the relation between household sector consumption and income that forms one of the key building blocks for Keynesian economics. A consumption line is characterized by vertical intercept, which indicates autonomous consumption, and slope, which is the marginal propensity to consume and indicates induced consumption. The aggregate expenditures line used in Keynesian economics is derived by adding or stacking investment, government purchases, and net exports to the consumption line. Saving is indicated as the difference between the consumption line and the 45-degree guide line.
The consumption line, also termed propensity-to-consume line or consumption function, shows the relation between consumption expenditures 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 consumption line is to graphically illustrate the basic consumption-income relation for the household sector, which is the foundation of the aggregate expenditures line used in Keynesian economics.

Two basic types of consumption are indicated by the consumption line. Autonomous consumption is the vertical intercept, or Y-intercept, of the consumption line. Induced consumption is the slope of the consumption line. Of no small importance, the slope of the consumption line is also the marginal propensity to consume (MPC).

Consumption Line
Consumption Line

A representative consumption line is presented in the exhibit to the right. This red line, labeled C in the exhibit is positively sloped, indicating that greater levels of income generate greater consumption expenditures by the household sector. This positive relation corresponds to the fundamental psychological law of Keynesian economics.

For reference, a black 45-degree line is also presented in this exhibit. Because this line has a slope of one, it indicates the relative slope of the consumption line.

The two primary characteristics of the consumption line are slope and intercept:

  • Slope: The slope of the consumption line presented here is positive, but less than one. In fact, the slope of the consumption line is numerically equal to the marginal propensity to consume. In this case the slope is equal to 0.75. The positive slope reflects induced consumption expenditures--more income means more consumption. It also reflects the basic Keynesian psychological law. Click the [Slope] button to illustrate.

  • Intercept: The consumption line intersects the vertical axis at a value of $1 trillion. Theoretically, this is a minimum "baseline" level of consumption, the amount of consumption undertaken even if income falls to zero. More to the point, this intersection indicates autonomous consumption--consumption expenditures unrelated to income. Click the [Intercept] button to illustrate.
The other side of consumption-income relation is saving, specifically it is the difference between income and consumption. Saving can be identified by the vertical difference between the consumption line and the 45-degree line. Click the [Saving] button is illustrate this. If the 45-degree line lies above the consumption line, then saving is positive. If the 45-degree line lies below the consumption line, then saving is negative.

Lastly, 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 the aggregate expenditures line, used to identified equilibrium, is derived based on the consumption line.

<= CONSUMPTION FUNCTIONCONSUMPTION RIVALRY =>


Recommended Citation:

CONSUMPTION LINE, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2018. [Accessed: April 21, 2018].


Check Out These Related Terms...

     | consumption schedule | consumption function | induced consumption | autonomous consumption | average propensity to consume | marginal propensity to consume | saving line | derivation, consumption line | slope, consumption line | intercept, consumption line | effective demand | psychological law |


Or For A Little Background...

     | consumption | consumption expenditures | Keynesian economics | macroeconomics | household sector | disposable income | national income | gross domestic product | saving |


And For Further Study...

     | personal consumption expenditures | induced expenditures | autonomous expenditures | aggregate expenditures | aggregate expenditures line | derivation, saving line | consumption expenditures determinants | Keynesian model | Keynesian equilibrium | injections-leakages model | aggregate demand | paradox of thrift | fiscal policy | multiplier |


Search Again?

Back to the WEB*pedia


APLS

YELLOW CHIPPEROON
[What's This?]

Today, you are likely to spend a great deal of time strolling through a department store trying to buy either car battery jumper cables or a dozen high trajectory optic orange golf balls. Be on the lookout for door-to-door salesmen.
Your Complete Scope

This isn't me! What am I?

The New York Stock Exchange was established by a group of investors in New York City in 1817 under a buttonwood tree at the end of a little road named Wall Street.
"Inside the ring or out, ain't nothing wrong with going down. It's staying down that's wrong. "

-- Muhammad Ali

ARMA
Autoregressive Moving Average
A PEDestrian's Guide
Xtra Credit
Tell us what you think about AmosWEB. Like what you see? Have suggestions for improvements? Let us know. Click the User Feedback link.

User Feedback



| AmosWEB | WEB*pedia | GLOSS*arama | ECON*world | CLASS*portal | QUIZ*tastic | PED Guide | Xtra Credit | eTutor | A*PLS |
| About Us | Terms of Use | Privacy Statement |

Thanks for visiting AmosWEB
Copyright ©2000-2018 AmosWEB*LLC
Send comments or questions to: WebMaster