A market is one of the many varieties of systems, procedures, social relations and infrastructures whereby parties engage in exchange. While parties may exchange goods and services by barter, most markets rely on sellers offering their goods or services in exchange for money from buyers, it can be said that a market is the process by which the prices of goods and services are established. Markets facilitate enable the distribution and resource allocation in a society. Markets allow any trade-able item to be priced. A market emerges more or less spontaneously or may be constructed deliberately by human interaction in order to enable the exchange of rights of services and goods. Markets supplant gift economies and are held in place through rules and customs, such as a booth fee, competitive pricing, source of goods for sale. Markets can differ by products or factors sold, product differentiation, place in which exchanges are carried, buyers targeted, selling process, government regulation, subsidies, minimum wages, price ceilings, legality of exchange, intensity of speculation, concentration, exchange asymmetry, relative prices and geographic extension.
The geographic boundaries of a market may vary for example the food market in a single building, the real estate market in a local city, the consumer market in an entire country, or the economy of an international trade bloc where the same rules apply throughout. Markets can be worldwide, see for example the global diamond trade. National economies can be classified as developed markets or developing markets. In mainstream economics, the concept of a market is any structure that allows buyers and sellers to exchange any type of goods and information; the exchange of goods or services, with or without money, is a transaction. Market participants consist of all the buyers and sellers of a good who influence its price, a major topic of study of economics and has given rise to several theories and models concerning the basic market forces of supply and demand. A major topic of debate is how much a given market can be considered to be a "free market", free from government intervention. Microeconomics traditionally focuses on the study of market structure and the efficiency of market equilibrium.
However, it is not always clear how the allocation of resources can be improved since there is always the possibility of government failure. A market is one of the many varieties of systems, procedures, social relations and infrastructures whereby parties engage in exchange. While parties may exchange goods and services by barter, most markets rely on sellers offering their goods or services in exchange for money from buyers, it can be said that a market is the process by which the prices of goods and services are established. Markets enables the distribution and allocation of resources in a society. Markets allow any trade-able item to be priced. A market sometimes emerges more or less spontaneously or may be constructed deliberately by human interaction in order to enable the exchange of rights of services and goods. Markets of varying types can spontaneously arise whenever a party has interest in a good or service that some other party can provide. Hence there can be a market for cigarettes in correctional facilities, another for chewing gum in a playground, yet another for contracts for the future delivery of a commodity.
There can be black markets, where a good is exchanged illegally, for example markets for goods under a command economy despite pressure to repress them and virtual markets, such as eBay, in which buyers and sellers do not physically interact during negotiation. A market can be organized as an auction, as a private electronic market, as a commodity wholesale market, as a shopping center, as a complex institution such as a stock market and as an informal discussion between two individuals. Markets vary in form, scale and types of participants as well as the types of goods and services traded; the following is a non exhaustive list: Food retail markets: farmers' markets, fish markets, wet markets and grocery stores Retail marketplaces: public markets, market squares, Main Streets, High Streets, souqs, night markets, shopping strip malls and shopping malls Big-box stores: supermarkets and discount stores Ad hoc auction markets: process of buying and selling goods or services by offering them up for bid, taking bids and selling the item to the highest bidder Used goods markets such as flea markets Temporary markets such as fairs Physical wholesale markets: sale of goods or merchandise to retailers.
History of economic thought
The history of economic thought deals with different thinkers and theories in the subject that became political economy and economics, from the ancient world to the present day in the 21st Century. This field encompasses many disparate schools of economic thought. Ancient Greek writers such as the philosopher Aristotle examined ideas about the art of wealth acquisition, questioned whether property is best left in private or public hands. In the Middle Ages, scholasticists such as Thomas Aquinas argued that it was a moral obligation of businesses to sell goods at a just priceIn the Western world, economics was not a separate discipline, but part of philosophy until the 18th–19th century Industrial Revolution and the 19th century Great Divergence, which accelerated economic growth. Hesiod active 750 to 650 BC, a Boeotian who wrote the earliest known work concerning the basic origins of economic thought, contemporary with Homer. Fan Li, an adviser to King Goujian of Yue, wrote on economic issues and developed a set of "golden" business rules.
Chanakya wrote a treatise on statecraft, economic policy and military strategy. Ancient Athens, an advanced city-state civilisation and progressive society, developed an embryonic model of democracy. Xenophon's Oeconomicus is a dialogue principally about household agriculture. Plato's dialogue The Republic describing an ideal city-state run by philosopher-kings contained references to specialization of labor and to production. According to Joseph Schumpeter, Plato was the first known advocate of a credit theory of money that is, money as a unit of account for debt. Aristotle's Politics analyzed different forms of the state as a critique of Plato's 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 advocate holding many things in common, he argued that not everything could be because of the "wickedness of human nature"."It is 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. For him there is a certain "art of acquisition" or "wealth-getting", but because it is the same many people are obsessed with its accumulation, "wealth-getting" for one's household is "necessary and honorable", while exchange on the retail trade for simple accumulation is "justly censured, for it is dishonorable". Writing of the people, Aristotle stated that they as a whole thought acquisition of wealth as being either the same as, or a principle of oikonomia, with oikos meaning "house" and with nomos meaning "law". Aristotle himself disapproved of usury and cast scorn on making money through a monopoly. Aristotle discarded Plato's credit theory of money for metallism, the theory that money derives its value from the purchasing power of the commodity upon which it is based, is only an "instrument", its sole purpose being a medium of exchange, which means on its own "it is worthless... not useful as a means to any of the necessities of life".
Thomas Aquinas was economic writer. He taught in both Cologne and Paris, 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, which he considered necessary for the reproduction of the social order. 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. Aquinas argued it was immoral for sellers to raise their prices 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 Aristotle's theory. Questions 77 and 78 concern economic issues what a just price might be, the fairness of a seller dispensing faulty goods. Aquinas argued against any form of cheating and recommended always paying compensation in lieu of good service.
Whilst human laws might not impose sanctions for unfair dealing, divine law did, in his opinion. One of Aquinas' main critics was Duns Scotus from Duns Scotland, who taught in Oxford and Paris. In his work Sententiae, he thought it possible to be more precise than Aquinas in calculating a just price, emphasizing the costs of labor and expenses, although he recognized that the latter might be inflated by exaggeration because buyer and seller have different ideas of a just price. If people did not benefit from a transaction, in Scotus' view, they would not trade. 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, he argued that aggregated, not individual and supply determine market prices. Hence, for him a just price was what the society collectively and not just one individual is willing to pay.
Until Joseph J. Spengler's 1964 work "Economic Thought of Islam: Ibn Khaldun", Adam
Cultural economics is the branch of economics that studies the relation of culture to economic outcomes. Here, ` culture' is defined by shared preferences of respective groups. Programmatic issues include whether and how much culture matters as to economic outcomes and what its relation is to institutions; as a growing field in behavioral economics, the role of culture in economic behavior is being demonstrate to cause significant differentials in decision-making and the management and valuation of assets. Applications include the study of social norms. Social identity, beliefs in redistributive justice, hatred, trust, family ties, long-term orientation, the culture of economics. A general analytical theme is how ideas and behaviors are spread among individuals through the formation of social capital, social networks and processes such as social learning, as in the theory of social evolution and information cascades. Methods include case studies and theoretical and empirical modeling of cultural transmission within and across social groups.
In 2013 Said E. Dawlabani added the value systems approach to the cultural emergence aspect of macroeconomics. Cultural economics develops from how wants and tastes are formed in society; this is due to nurture aspects, or what type of environment one is raised in, as it is the internalization of one’s upbringing that shapes their future wants and tastes. Acquired tastes can be thought of as an example of this, as they demonstrate how preferences can be shaped socially. A key thought area that separates the development of cultural economics from traditional economics is a difference in how individuals arrive at their decisions. While a traditional economist will view decision making as having both implicit and explicit consequences, a cultural economist would argue that an individual will not only arrive at their decision based on these implicit and explicit decisions but based on trajectories; these trajectories consist of regularities, which have been built up throughout the years and guide individuals in their decision-making process.
Economists have started to look at cultural economics with a systems thinking approach. In this approach, the economy and culture are each viewed as a single system where "interaction and feedback effects were acknowledged, where in particular the dynamic were made explicit". In this sense, the interdependencies of culture and the economy can be combined and better understood by following this approach. Said E. Dawlabani's book MEMEnomics: The Next-Generation Economic System combines the ideas of value systems and systems thinking to provide one of the first frameworks that explores the effect of economic policies on culture; the book explores the intersections of multiple disciplines such as cultural development, organizational behavior, memetics all in an attempt to explore the roots of cultural economics. The advancing pace of new technology is transforming how the public shares culture; the cultural economic field has seen great growth with the advent of online social networking which has created productivity improvements in how culture is consumed.
New technologies have lead to cultural convergence where all kinds of culture can be accessed on a single device. Throughout their upbringing, younger persons of the current generation are consuming culture faster than their parents did, through new mediums; the smartphone is a blossoming example of this where books, talk and more can all be accessed on a single device in a matter of seconds. This medium and the culture surrounding it is beginning to have an effect on the economy, whether it be increasing communication while lowering costs, lowering the barriers of entry to the technology economy, or making use of excess capacity; this field has seen growth through the advent of new economic studies that have put on a cultural lens. For example, a recent study on Europeans living with their families into adulthood was conducted by Paola Sapienza, a professor at Northwestern University; the study found that those of Southern European descent tend to live at home with their families longer than those of Northern European descent.
Sapienza added cultural critique to her analysis of the research, revealing that it is Southern European culture to stay at home longer and related this to how those who live at home longer have fewer children and start families thus contributing to Europe's falling birthrates. Sapienza's work is an example of how the growth of cultural economics is beginning to spread across the field. An area that cultural economics has a strong presence in is sustainable development. Sustainable development has been defined as "...development that meets the needs of the present without compromising the ability of future generations to meet their own needs...". Culture plays an important role in this as it can determine how people view preparing for these future generations. Delayed gratification is a cultural economic issue that developed countries are dealing with. Economists argue that to ensure that the future is better than today, certain measures must be taken such as collecting taxes or "going green" to protect the environment.
Policies such as these are hard for today's politicians to promote who want to win the vote of today's voters who are concerned with the present and not the future. People want to see the benefits now, not in the future. Economist David Throsby has proposed the idea of culturally sustainable development which compasses both the cultural industries and culture, he has created a set of criteria in regards to for which policy prescriptions can be compared to in order to ensure growth for future generations. The
Econometrics is the application of statistical methods to economic data in order to give empirical content to economic relationships. More it is "the quantitative analysis of actual economic phenomena based on the concurrent development of theory and observation, related by appropriate methods of inference". An introductory economics textbook describes econometrics as allowing economists "to sift through mountains of data to extract simple relationships"; the first known use of the term "econometrics" was by Polish economist Paweł Ciompa in 1910. Jan Tinbergen is considered by many to be one of the founding fathers of econometrics. Ragnar Frisch is credited with coining the term in the sense. A basic tool for econometrics is the multiple linear regression model. Econometric theory uses statistical theory and mathematical statistics to evaluate and develop econometric methods. Econometricians try to find estimators that have desirable statistical properties including unbiasedness and consistency.
Applied econometrics uses theoretical econometrics and real-world data for assessing economic theories, developing econometric models, analysing economic history, forecasting. A basic tool for econometrics is the multiple linear regression model. In modern econometrics, other statistical tools are used, but linear regression is still the most used starting point for an analysis. Estimating a linear regression on two variables can be visualised as fitting a line through data points representing paired values of the independent and dependent variables. For example, consider Okun's law, which relates GDP growth to the unemployment rate; this relationship is represented in a linear regression where the change in unemployment rate is a function of an intercept, a given value of GDP growth multiplied by a slope coefficient β 1 and an error term, ε: Δ Unemployment = β 0 + β 1 Growth + ε. The unknown parameters β β 1 can be estimated. Here β 1 is estimated to be −1.77 and β 0 is estimated to be 0.83.
This means that if GDP growth increased by one percentage point, the unemployment rate would be predicted to drop by 1.77 points. The model could be tested for statistical significance as to whether an increase in growth is associated with a decrease in the unemployment, as hypothesized. If the estimate of β 1 were not different from 0, the test would fail to find evidence that changes in the growth rate and unemployment rate were related; the variance in a prediction of the dependent variable as a function of the independent variable is given in polynomial least squares. Econometric theory uses statistical theory and mathematical statistics to evaluate and develop econometric methods. Econometricians try to find estimators that have desirable statistical properties including unbiasedness and consistency. An estimator is unbiased. Ordinary least squares is used for estimation since it provides the BLUE or "best linear unbiased estimator" given the Gauss-Markov assumptions; when these assumptions are violated or other statistical properties are desired, other estimation techniques such as maximum likelihood estimation, generalized method of moments, or generalized least squares are used.
Estimators that incorporate prior beliefs are advocated by those who favour Bayesian statistics over traditional, classical or "frequentist" approaches. Applied econometrics uses theoretical econometrics and real-world data for assessing economic theories, developing econometric models, analysing economic history, forecasting. Econometrics may use standard statistical models to study economic questions, but most they are with observational data, rather than in controlled experiments. In this, the design of observational studies in econometrics is similar to the design of studies in other observational disciplines, such as astronomy, epidemiology and political science. Analysis of data from an observational study is guided by the study protocol, although exploratory data analysis may be useful for generating new hypotheses. Economics analyses systems of equations and inequalities, such as supply and demand hypothesized to be in equilibrium; the field of econometrics has developed methods for identification and estimation of simultaneous-equation models.
These methods are analogous to methods used in other areas of science, such as the field of system identification in systems analysis and control theory. Such methods may allow researchers to estimate models and investigate their empirical consequences, without directly manipulating the system. One of the fundamental statistical methods used by econometricians is regression analysis. Regression methods are important i
Financial economics is the branch of economics characterized by a "concentration on monetary activities", in which "money of one type or another is to appear on both sides of a trade". Its concern is thus the interrelation of financial variables, such as prices, interest rates and shares, as opposed to those concerning the real economy, it has two main areas of focus: corporate finance. The subject is concerned with "the allocation and deployment of economic resources, both spatially and across time, in an uncertain environment", it therefore centers on decision making under uncertainty in the context of the financial markets, the resultant economic and financial models and principles, is concerned with deriving testable or policy implications from acceptable assumptions. It is built on the foundations of microeconomics and decision theory. Financial econometrics is the branch of financial economics that uses econometric techniques to parameterise these relationships. Mathematical finance is related in that it will derive and extend the mathematical or numerical models suggested by financial economics.
Note though that the emphasis there is mathematical consistency, as opposed to compatibility with economic theory. Financial economics has a microeconomic focus, whereas monetary economics is macroeconomic in nature. Financial economics is taught at the postgraduate level. Specialist undergraduate degrees are offered in the discipline; this article provides an overview and survey of the field: for derivations and more technical discussion, see the specific articles linked. As above, the discipline explores how rational investors would apply decision theory to the problem of investment; the subject is thus built on the foundations of microeconomics and decision theory, derives several key results for the application of decision making under uncertainty to the financial markets. Underlying all of financial economics are the concepts of present value and expectation. Calculating their present value allows the decision maker to aggregate the cashflows to be produced by the asset in the future, to a single value at the date in question, to thus more compare two opportunities.
An immediate extension is to combine probabilities with present value, leading to the expected value criterion which sets asset value as a function of the sizes of the expected payouts and the probabilities of their occurrence. This decision method, fails to consider risk aversion. In other words, since individuals receive greater utility from an extra dollar when they are poor and less utility when comparatively rich, the approach is to therefore "adjust" the weight assigned to the various outcomes correspondingly.. Choice under uncertainty here may be characterized as the maximization of expected utility. More formally, the resulting expected utility hypothesis states that, if certain axioms are satisfied, the subjective value associated with a gamble by an individual is that individual's statistical expectation of the valuations of the outcomes of that gamble; the impetus for these ideas arise from various inconsistencies observed under the expected value framework, such as the St. Petersburg paradox.
The concepts of arbitrage-free, "rational", pricing and equilibrium are coupled with the above to derive "classical" financial economics. Rational pricing is the assumption that asset prices will reflect the arbitrage-free price of the asset, as any deviation from this price will be "arbitraged away"; this assumption is useful in pricing fixed income securities bonds, is fundamental to the pricing of derivative instruments. Economic equilibrium is, in general, a state in which economic forces such as supply and demand are balanced, and, in the absence of external influences these equilibrium values of economic variables will not change. General equilibrium deals with the behavior of supply and prices in a whole economy with several or many interacting markets, by seeking to prove that a set of prices exists that will result in an overall equilibrium; the two concepts are linked as follows: where market prices do not allow for profitable arbitrage, i.e. they comprise an arbitrage-free market these prices are said to constitute an "arbitrage equilibrium".
Intuitively, this may be seen by considering that where an arbitrage opportunity does exist prices can be expected to change, are therefore not in equilibrium. An arbitrage equilibrium is thus a precondition for a general economic equilibrium; the immediate, formal, extension of this idea, the fundamental theorem of asset pricing, shows that where markets are as described —and are additionally complete—one may make financial decisions by constructing a risk neutral probability measure corresponding to the market. "Complete" here means that there
Development economics is a branch of economics which deals with economic aspects of the development process in low income countries. Its focus is not only on methods of promoting economic development, economic growth and structural change but on improving the potential for the mass of the population, for example, through health and workplace conditions, whether through public or private channels. Development economics involves the creation of theories and methods that aid in the determination of policies and practices and can be implemented at either the domestic or international level; this may involve restructuring market incentives or using mathematical methods such as intertemporal optimization for project analysis, or it may involve a mixture of quantitative and qualitative methods. Unlike in many other fields of economics, approaches in development economics may incorporate social and political factors to devise particular plans. Unlike many other fields of economics, there is no consensus on what students should know.
Different approaches may consider the factors that contribute to economic convergence or non-convergence across households and countries. The earliest Western theory of development economics was mercantilism, which developed in the 17th century, paralleling the rise of the nation state. Earlier theories had given little attention to development. For example, the dominant school of thought during medieval feudalism, emphasized reconciliation with Christian theology and ethics, rather than development; the 16th- and 17th-century School of Salamanca, credited as the earliest modern school of economics did not address development specifically. Major European nations in the 17th and 18th century all adopted mercantilist ideals to varying degrees, the influence only ebbing with the 18th-century development of physiocrats in France and classical economics in Britain. Mercantilism held that a nation's prosperity depended on its supply of capital, represented by bullion held by the state, it emphasised the maintenance of a high positive trade balance as a means of accumulating this bullion.
To achieve a positive trade balance, protectionist measures such as tariffs and subsidies to home industries were advocated. Mercantilist development theory advocated colonialism. Theorists most associated with mercantilism include Philipp von Hörnigk, who in his Austria Over All, If She Only Will of 1684 gave the only comprehensive statement of mercantilist theory, emphasizing production and an export-led economy. In France, mercantilist policy is most associated with 17th-century finance minister Jean-Baptiste Colbert, whose policies proved influential in American development. Mercantilist ideas continue in the theories of economic neomercantilism. Following mercantilism was the related theory of economic nationalism, promulgated in the 19th century related to the development and industrialization of the United States and Germany, notably in the policies of the American System in America and the Zollverein in Germany. A significant difference from mercantilism was the de-emphasis on colonies, in favor of a focus on domestic production.
The names most associated with 19th-century economic nationalism are the American Alexander Hamilton, the German-American Friedrich List, the American Henry Clay. Hamilton's 1791 Report on Manufactures, his magnum opus, is the founding text of the American System, drew from the mercantilist economies of Britain under Elizabeth I and France under Colbert. List's 1841 Das Nationale System der Politischen Ökonomie, which emphasized stages of growth, proved influential in the US and Germany, nationalist policies were pursued by politician Henry Clay, by Abraham Lincoln, under the influence of economist Henry Charles Carey. Forms of economic nationalism and neomercantilism have been key in Japan's development in the 19th and 20th centuries, the more recent development of the Four Asian Tigers, most China. Following Brexit and the United States presidential election, 2016, some experts have argued a new kind of "self-seeking capitalism" popularly known as Trumponomics could have a considerable impact on cross-border investment flows and long-term capital allocation The origins of modern development economics are traced to the need for, problems with the industrialization of eastern Europe in the aftermath of World War II.
The key authors are Paul Rosenstein-Rodan, Kurt Mandelbaum, Ragnar Nurkse, Sir Hans Wolfgang Singer. Only after the war did economists turn their concerns towards Asia and Latin America. At the heart of these studies, by authors such as Simon Kuznets and W. Arthur Lewis was an analysis of not only economic growth but structural transformation. An early theory of development economics, the linear-stages-of-growth model was first formulated in the 1950s by W. W. Rostow in The Stages of Growth: A Non-Communist Manifesto, following work of Marx and List; this theory modifies Marx's stages theory of development and focuses on the accelerated accumulation of capital, through the utilization of both domestic and international savings as a means of spurring investment, as the primary means of promoting economic growth and, development. The linear-stages-of-growth model posits that there are a series of five consecutive stages of development which all countries must go through during the process of development.
These stages are "the traditional society, the pre-conditions for take-off, the take-off, the drive to maturity, the age of high mass-consumption" Simple versi