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Intertemporal Choice
In economics, intertemporal choice is the study of the relative value people assign to two or more payoffs at different points in time. This relationship is usually simplified to today and some future date. Intertemporal choice was introduced by Canadian economist John Rae in 1834 in the "Sociological Theory of Capital". Later, Eugen von Böhm-Bawerk in 1889 and Irving Fisher in 1930 elaborated on the model. Fisher model Assumptions of the model # consumer's income is constant # maximization of the utility # anything above the line is out of explanation # investments are generators of savings # any property is indivisible and unchangeable According to this model there are three types of consumption: past, present and future. When making decisions between present and future consumption, the consumer takes his/her previous consumption into account. This decision making is based on an '' indifference map with negative slope'' because if he consumes something today it means th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Economics
Economics () is a behavioral science that studies the Production (economics), production, distribution (economics), distribution, and Consumption (economics), consumption of goods and services. Economics focuses on the behaviour and interactions of Agent (economics), economic agents and how economy, economies work. Microeconomics analyses what is viewed as basic elements within economy, economies, including individual agents and market (economics), markets, their interactions, and the outcomes of interactions. Individual agents may include, for example, households, firms, buyers, and sellers. Macroeconomics analyses economies as systems where production, distribution, consumption, savings, and Expenditure, investment expenditure interact; and the factors of production affecting them, such as: Labour (human activity), labour, Capital (economics), capital, Land (economics), land, and Entrepreneurship, enterprise, inflation, economic growth, and public policies that impact gloss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valuation (finance)
In finance, valuation is the process of determining the value of a (potential) investment, asset, or security. Generally, there are three approaches taken, namely discounted cashflow valuation, relative valuation, and contingent claim valuation. Valuations can be done for assets (for example, investments in marketable securities such as companies' shares and related rights, business enterprises, or intangible assets such as patents, data and trademarks) or for liabilities (e.g., bonds issued by a company). Valuation is a subjective exercise, and in fact, the process of valuation itself can also affect the value of the asset in question. Valuations may be needed for various reasons such as investment analysis, capital budgeting, merger and acquisition transactions, financial reporting, taxable events to determine the proper tax liability. In a business valuation context, various techniques are used to determine the (hypothetical) price that a third party would pay for a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Rae (economist)
John Rae (1 June 1796, Footdee, Aberdeen – 12 July 1872, Staten Island, NY), was a Scottish/Canadian economist. Life Rae was one of six children to merchant shipbuilder John Rae and Margaret Cuthbert. He graduating from Marischal College (University of Aberdeen) in 1815 with the degree of Master of Arts, followed by two years of medicine at the University of Edinburgh. Changes in family circumstances with his father's bankruptcy in 1820 led to Rae's move to Canada in 1822. He was located in Williamstown ( Glengarry County), and later, Hamilton in Ontario, Canada, where his wife died of cholera. He was well acquainted with the Scottish/Canadian community and was affiliated with the Presbyterian Church of Scotland. In Canada, he worked as a timber trader, schoolteacher, and a doctor. In 1834, he moved to Boston, and then New York, where he also worked as a teacher. He went on to Central America where he was a physician. He moved with gold-miners to California in 1849, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eugen Von Böhm-Bawerk
Eugen Ritter von Böhm-Bawerk (; born Eugen Böhm, 12 February 1851 – 27 August 1914) was an Austrian-school intellectual and political economist who served intermittently as the Minister of Finance of Austria between 1895 and 1904. Böhm-Bawerk is also noted for writing extensive criticisms of Marxism. Biography Eugen Böhm was born on 12 February 1851 in Brno (), Moravia, Austrian Empire. While studying to be a lawyer at the University of Vienna, Böhm-Bawerk read Carl Menger's '' Principles of Economics'' and became an adherent of his theories, although he never studied under him. Joseph Schumpeter saw Böhm-Bawerk as "so completely the enthusiastic disciple of Menger that it is hardly necessary to look for other influences." During his time at the Vienna University, he became good friends with Friedrich von Wieser, who later became his brother-in-law. After Vienna, he studied political economy and social science at the universities of Heidelberg, Leipzig and Jena, under ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irving Fisher
Irving Fisher (February 27, 1867 – April 29, 1947) was an American economist, statistician, inventor, eugenicist and progressive social campaigner. He was one of the earliest American neoclassical economists, though his later work on debt deflation has been embraced by the post-Keynesian school. Joseph Schumpeter described him as "the greatest economist the United States has ever produced", an assessment later repeated by James Tobin and Milton Friedman.Milton Friedman, ''Money Mischief: Episodes in Monetary History'', Houghton Mifflin Harcourt (1994) p. 37. Fisher made important contributions to utility theory and general equilibrium. He was also a pioneer in the rigorous study of intertemporal choice in markets, which led him to develop a theory of capital and interest rates. His research on the quantity theory of money inaugurated the school of macroeconomic thought known as "monetarism". Fisher was also a pioneer of econometrics, including the development of ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indifference Map
In economics, an indifference curve connects points on a graph representing different quantities of two goods, points between which a consumer is ''indifferent''. That is, any combinations of two products indicated by the curve will provide the consumer with equal levels of utility, and the consumer has no preference for one combination or bundle of goods over a different combination on the same curve. One can also refer to each point on the indifference curve as rendering the same level of utility (satisfaction) for the consumer. In other words, an indifference curve is the locus of various points showing different combinations of two goods providing equal utility to the consumer. Utility is then a device to represent preferences rather than something from which preferences come. The main use of indifference curves is in the representation of potentially observable demand patterns for individual consumers over commodity bundles. Indifference curve analysis is a purely technolog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Choice Modelling
Choice modelling attempts to model the decision process of an individual or segment via revealed preferences or stated preferences made in a particular context or contexts. Typically, it attempts to use discrete choices (A over B; B over A, B & C) in order to infer positions of the items (A, B and C) on some relevant latent scale (typically "utility" in economics and various related fields). Indeed many alternative models exist in econometrics, marketing, sociometrics and other fields, including utility maximization, optimization applied to consumer theory, and a plethora of other identification strategies which may be more or less accurate depending on the data, sample, hypothesis and the particular decision being modelled. In addition, choice modelling is regarded as the most suitable method for estimating consumers' willingness to pay for quality improvements in multiple dimensions. Related terms There are a number of terms which are considered to be synonyms with the term ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decision Theory
Decision theory or the theory of rational choice is a branch of probability theory, probability, economics, and analytic philosophy that uses expected utility and probabilities, probability to model how individuals would behave Rationality, rationally under uncertainty. It differs from the Cognitive science, cognitive and Behavioural sciences, behavioral sciences in that it is mainly Prescriptive economics, prescriptive and concerned with identifying optimal decision, optimal decisions for a rational agent, rather than Descriptive economics, describing how people actually make decisions. Despite this, the field is important to the study of real human behavior by Social science, social scientists, as it lays the foundations to Mathematical model, mathematically model and analyze individuals in fields such as sociology, economics, criminology, cognitive science, moral philosophy and political science. History The roots of decision theory lie in probability theory, developed by Blai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discount Function
In economics, a discount function is used in economic models to describe the weights placed on rewards received at different points in time. For example, if time is discrete and utility is time-separable, with the discount function having a negative first derivative and with (or in continuous time) defined as consumption at time , total utility from an infinite stream of consumption is given by: U\Bigl( \_^\infty \Bigr) = \sum_^\infty Total utility in the continuous-time case is given by: U \Bigl( \_^\infty \Bigr) = \int_^\infty {f(t)u(c(t)) dt} provided that this integral exists. Exponential discounting and hyperbolic discounting are the two most commonly used examples. See also *Discounted utility In economics, discounted utility is the utility (desirability) of some future event, such as consuming a certain amount of a good, as perceived at the present time as opposed to at the time of its occurrence. It is calculated as the present dis ... * Inter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discounted Utility
In economics, discounted utility is the utility (desirability) of some future event, such as consuming a certain amount of a good, as perceived at the present time as opposed to at the time of its occurrence. It is calculated as the present discounted value of future utility, and for people with time preference for sooner rather than later gratification, it is less than the future utility. The utility of an event occurring at future time under utility function , discounted back to the present (time 0) using discount factor , is \beta ^t u(x_t). Since more distant events are less liked, . Discounted utility calculations made for events at various points in the future as well as at the present take the form \sum_^T \beta ^t u(x_t), where is the utility of some choice at time and is the time of the most distant future satisfaction event. Here, since utility comparisons are being made across time when the utilities are combined in a single evaluation, the utility functi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intertemporal Budget Constraint
In economics and finance, an intertemporal budget constraint is a constraint faced by a decision maker who is making choices for both the present and the future. The term intertemporal is used to describe any relationship between past, present and future events or conditions. In its general form, the intertemporal budget constraint says that the present value of current and future cash outflows cannot exceed the present value of currently available funds and future cash inflows. Typically this is expressed as :\sum_^T \frac \le \sum_^T \frac , where x_t is expenditure at time ''t'', w_t is the cash that becomes available at time ''t'', ''T'' is the most distant relevant time period, 0 is the current time period, and \frac{1+r} is the discount factor computed from the interest rate ''r''. Complications are possible in various circumstances. For example, the interest rate for discounting cash receipts might be greater than the interest rate for discounting expenditures, because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keynes–Ramsey Rule
In macroeconomics, the Keynes–Ramsey rule is a necessary condition for the optimality of intertemporal consumption choice. Usually it is expressed as a differential equation relating the rate of change of consumption with interest rates, time preference, and (intertemporal) elasticity of substitution. If derived from a basic Ramsey–Cass–Koopmans model, the Keynes–Ramsey rule may look like :\dot(t) = \sigma \cdot (r - \rho) \cdot c(t) where c(t) is consumption and \dot(t) its change over time (in Newton notation), \rho \in (0,1) is the discount rate, r \in (0,1) is the real interest rate, and \sigma > 0 is the (intertemporal) elasticity of substitution. The Keynes–Ramsey rule is named after Frank P. Ramsey, who derived it in 1928, and his mentor John Maynard Keynes, who provided an economic interpretation. Mathematically, the Keynes–Ramsey rule is a necessary first-order condition for an optimal control problem, also known as an Euler–Lagrange equation In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
