Price/Income Consumption Curves. Printer Friendly. demand functions - calculated from budget line and utility function. MRS calculated by partial derivatives of. Since Engel curve can be derived from the income consumption curve, we first explain the concept of income consumption curve and income effect. In economics and particularly in consumer choice theory, the income-consumption curve is a curve in a graph in which the quantities of two goods are plotted on the two axes; the curve is the locus of points showing the consumption bundles chosen at each of various levels of income.‎Consumer theory · ‎Income–consumption · ‎Inferior goods · ‎Cobb–Douglas.


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An increase in the income, with the prices of all goods fixed, causes consumers to alter their choice of market basket.

What is the Income Consumption Curve (ICC) ?

The extreme left and right indifference curves belong to different individuals with different preferences, while the three central indifference curves income consumption curve to one individual for whom the income-consumption curve is shown.

Each blue line represents one level of total consumption expenditure common to all its points; its slope depends on the two goods' relative prices. The income effect is a phenomenon observed through changes in purchasing power.

It reveals the change in quantity demanded brought by a change in real income. The figure 1 on the left shows the consumption patterns of the consumer of two goods X1 and X2, the prices of which are p1 and p2 respectively.

Income Effect: Income Consumption Curve (with curve diagram)

An increase in the money income of the consumer, with p1 and p2 constant, will income consumption curve the budget line outward parallel to itself. In the figure, this means that the change in the money income of the consumer will shift the budget line B1 outward parallel to itself to B2 where the bundle X' bundle will be chosen.

It encompasses many disparate schools of economic thought, ancient Greek writers such as the philosopher Aristotle examined ideas about the art of wealth acquisition, and questioned whether property is best left in private or public hands.

In the Middle Ages, scholasticists such as Thomas Aquinas income consumption curve that it was an obligation of businesses to sell goods at a just price. Fan Li, an adviser to King Goujian of Yue, wrote on economic issues, chanakya wrote the Arthashastra, a treatise on statecraft, economic policy and military strategy.

Ancient Athens, a society, developed income consumption curve embryonic model of democracy. Xenophons Oeconomicus is a dialogue principally about household management and agriculture, Platos dialogue The Republic describing an ideal city-state run by philosopher-kings contained references to specialization of labor and to production.

Plato was the first to advocate the theory of money.

Price/Income Consumption Curves | CourseNotes

Aristotles Politics analyzed different forms of the state as a critique of Platos model of a philosopher-kings, of particular interest for economists, Plato provided a blueprint of a society based on common ownership of resources.

Aristotle viewed this model as an oligarchical anathema, though Aristotle did certainly advocate holding many things in common, he argued that not everything income consumption curve be, simply because of the wickedness of human nature.

It is clearly better that property should be private, wrote Aristotle, but the use of it common, in Politics Book I, Aristotle discusses the general nature of households and market exchanges.

Aristotle himself highly disapproved of usury and cast scorn on making money through a monopoly, not useful as a means to any of the necessities of life. Thomas Aquinas was an Italian theologian and economic writer and he taught in both Cologne and Paris, and was part of a group of Catholic scholars known as the Schoolmen, who moved their enquiries beyond theology to philosophical and scientific debates.

In the treatise Summa Theologica Aquinas dealt with the concept of a just price, similar in many ways to the modern concept of long run equilibrium, a just price was just sufficient to cover the costs of production, including the maintenance of a worker and his family.

Price/Income Consumption Curves

Aquinas argued it was immoral for sellers to raise their prices simply because buyers had a pressing need for a product, Aquinas discusses a number of topics in the format of questions and replies, substantial tracts dealing with Aristotles theory. Questions 77 and 78 concern economic issues, primarily what a just price might be, Aquinas argued against any form income consumption curve cheating and income consumption curve always paying compensation in lieu of good service.

Whilst human laws might not impose sanctions for unfair dealing, divine law did, one of Aquinas main critics was Duns Scotus, originally from Duns Scotland, who taught in Oxford, Cologne, and Paris.

If people did not benefit from a transaction, in Scotus view, Scotus said merchants perform a necessary and useful social role by transporting goods and making them available to the public.


Jean Buridan was a French priest, buridanus looked at money from two angles, its metal value and its purchasing power, which he acknowledged can vary 5. Schools of economic thought — In the history of economic thought, a school of economic thought is a group of economic income consumption curve who share or shared a common perspective on the way economies work.