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A theory of human decision making that assumes that people behave rationally, but only within the limits of the information available to them. Because their information may be inadequate (bounded) they make take decisions that appear to be irrational according to traditional theories about homo economicus (economic man). (See also behavioral economics. )
Industry:Economy
How firms keep out competition--an important source of incumbent advantage. There are four main sorts of barriers. * A firm may own a crucial resource, such as an oil well, or it may have an exclusive operating license, for instance, to broadcast on a particular radio wavelength. * A big firm with economies of scale may have a significant competitive advantage because it can produce a large output at lower costs than can a smaller potential rival. * An incumbent firm may make it hard for a would-be entrant by incurring huge sunk costs, spending lots of money on things such as advertising, which any rival must match to compete effectively but which have no value if the attempt to compete should fail. * Powerful firms can discourage entry by raising exit costs, for example, by making it an industry norm to hire workers on long-term contracts, which make firing an expensive process.
Industry:Economy
The Big Mac index was devised by Pam Woodall of The Economist in 1986, as a light-hearted guide to whether currencies are at their "correct" level. It is based on one of the oldest concepts in international economics, purchasing power parity (PPP), the notion that a dollar, say, should buy the same amount in all countries. In the long run, argue PPP fans, currencies should move towards the exchange rate, which equalizes the prices of an identical basket of goods and services in each country. In this case, the basket is a McDonalds' Big Mac, which is produced in more than 100 countries. The Big Mac PPP is the exchange rate that would leave hamburgers costing the same in the United States as elsewhere. Comparing actual exchange rates with PPP signals whether a currency is undervalued or overvalued. Some studies have found that the Big Mac index is often a better predictor of currency movements than more theoretically rigorous models.
Industry:Economy
Part of an economic theory for valuing financial securities and calculating the cost of capital, known as the capital asset pricing model, beta measures the sensitivity of the price of a particular asset to changes in the market as a whole. If a company's shares have a beta of 0. 8 it implies that on average the share price will change by 0. 8% if there is a 1% change in the market. There is a long-running debate about whether a beta calculated from a security's past relationship with the market actually predicts how that relationship will behave in future, leading some doubting economists to claim that beta is "dead".
Industry:Economy
A branch of economics that concentrates on explaining the economic decisions people make in practice, especially when these conflict with what conventional economic theory predicts they will do. Behaviorists try to augment or replace traditional ideas of economic rationality (homo economicus) with decision-making models borrowed from psychology. According to psychologists, people are disproportionately influenced by a fear of feeling regret and will often forgo benefits even to avoid only a small risk of feeling they have failed. They are also prone to cognitive dissonance, often holding on to a belief plainly at odds with new evidence, usually because the belief has been held and cherished for a long time. Then there is anchoring: people are often overly influenced by outside suggestion. People apparently also suffer from status quo bias: they are willing to take bigger gambles to maintain the status quo than they would be to acquire it in the first place. Traditional utility theory assumes that people make individual decisions in the context of the big picture. But psychologists have found that they generally compartmentalize, often on superficial grounds. They then make choices about things in one particular mental compartment without taking account of the implications for things in other compartments. There is lots of evidence that people are persistently and irrationally overconfident. They are also vulnerable to hindsight bias: once something happens they overestimate the extent to which they could have predicted it. Many of these traits are captured in prospect theory, which is at the heart of much of behavioral economics.
Industry:Economy
An investor who thinks that the price of a particular security or class of securities (shares, say) is going to fall; the opposite of a bull.
Industry:Economy
When total public-sector spending equals total government income during the same period from taxes and charges for public services. Politicians in some countries, such as the United States, have argued that government should be required to run a balanced budget in order to have sound public finances. However, there is no economic reason why public borrowing need necessarily be bad. For instance, if the debt is used to invest in things that will increase the growth rate of the economy--infrastructure, say, or education--it may be justified. It may also make more economic sense to try to balance the budget on average over an entire economic cycle, with public-sector deficits boosting the economy during recession and surpluses stopping it overheating during booms, than to balance it every year.
Industry:Economy
A brand of neo-classical economics established in Vienna during the late 19th century and the first half of the 20th century. It was strongly opposed to Marxism and, more broadly, to the use of economic theories to justify government intervention in the economy. Prominent members included Friedrich Hayek, Joseph Schumpeter and Ludwig von Mises. It gave birth to the definition of economics as the science of studying human behavior as a relationship between ends and scarce means that have alternative uses. Austrian economic thinking was characterized by attributing all economic activity, including the behavior of apparently impersonal institutions, to the wishes and actions of individuals. It did this by examining choices in terms of their opportunity cost (that is, what is the next best use of resources to that which is being considered?) and by analyzing the impact of timing on decision making. Hayek correctly predicted the failure of Soviet-style central planning. His ideas are said to have inspired many of the free-market reforms carried out during the 1980s in the United States under Ronald Reagan and in the UK under Margaret Thatcher. Schumpeter developed a theory of innovation and economic change characterized by the phrase creative destruction.
Industry:Economy
One one-hundredth of a percentage point. Small movements in the interest rate, the exchange rate and bond yields are often described in terms of basis points. If a bond yield moves from 5. 25% to 5. 45%, it has risen by 20 basis points.
Industry:Economy
An attempt to reduce the number of bank failures by tying a bank's capital adequacy ratio to the riskiness of the loans it makes. For instance, there is less chance of a loan to a government going bad than a loan to, say, an internet business, so the bank should not have to hold as much capital in reserve against the first loan as against the second. The first attempt to do this worldwide was by the Basel committee for international banking supervision in 1988. However, its system of judging the relative riskiness of different loans was crude. For instance, it penalized banks no more for making loans to a fly-by-night software company in Thailand than to Microsoft; no more for loans to South Korea, bailed out by the IMF in 1998, than to Switzerland. In 1998, "Basel 2" was proposed, using much more sophisticated risk classifications. However, controversy over these new classifications, and the cost to banks of administering the new approach, led to the introduction of Basel 2 being delayed until (at least) 2005.
Industry:Economy
