- 産業: Economy; Printing & publishing
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Opposition to free trade. Although intended to protect a country’s economy from foreign competitors, it usually makes the protected country worse off than if it allowed international trade to proceed without hindrance from trade barriers such as quotas and tariffs.
Industry:Economy
A theory of “irrational” economic behavior. Prospect theory holds that there are recurring biases driven by psychological factors that influence people’s choices under uncertainty. In particular, it assumes that people are more motivated by losses than by gains and as a result will devote more energy to avoiding loss than to achieving gain. The theory is based on the experimental work of two psychologists, Daniel Kahneman (who won a Nobel Prize for economics for it) and Amos Tversky (1937–96). It is an important component of behavioral economics.
Industry:Economy
Essential to any market economy. To trade, it is essential to know that the person selling a good or service owns it and that ownership will pass to the buyer. The stronger and clearer property rights are, the more likely it is that trade will take place and that prices will be efficient. If there are no property rights over something there can be severe consequences. A solution to the costly externality of clean air being polluted may be to establish property rights over the air, so that the owner can charge the polluter to pump smoke into the atmosphere. Private property rights are often more economically efficient than common ownership. When people do not own something directly, they may have little incentive to look after it. (See the tragedy of the commons. ) Strikingly, in Russia after communism, the establishment of a well-functioning market economy proved difficult, partly because it was unclear who owned many of the country’s resources, and those property rights that did exist often counted for little. Businesses would often have their products stolen by criminal gangs or be forced to hand over most of their profits in protection money. It is no coincidence that an effective judicial system, as well as property rights for it to enforce, is a feature of all advanced market economies. That said, nowhere are property rights absolute. For instance, taxation is a clear example of the state infringing taxpayers’ ownership of their money. The economic cost of infringing property rights underlines how important it is that governments think carefully about the consequences for economic growth of their tax policies.
Industry:Economy
Taxation that takes a larger proportion of a taxpayer’s income the higher the income is. (See vertical equity. )
Industry:Economy
The main reason firms exist. In economic theory, profit is the reward for risk taken by enterprise, the fourth of the factors of production – what is left after all other costs, including rent, wages and interest. Put simply, profit is a firm’s total revenue minus total cost. Economists distinguish between normal profit and excess profit. Normal profit is the opportunity cost of the entrepreneur, the amount of profit just sufficient to keep the firm in business. If profit is any lower than that, then enterprise would be better off engaged in some alternative economic activity. Excess profit, also known as super-normal profit, is profit above normal profit and is usually evidence that the firm enjoys some market power that allows it to be more profitable than it would be in a market with perfect competition.
Industry:Economy
The relationship between inputs and output, which can be applied to individual factors of production or collectively. Labor productivity is the most widely used measure and is usually calculated by dividing total output by the number of workers or the number of hours worked. Total factor productivity attempts to measure the overall productivity of the inputs used by a firm or a country. Alas, the usefulness of productivity statistics is questionable. The quality of different inputs can change significantly over time. There can also be significant differences in the mix of inputs. Furthermore, firms and countries may use different definitions of their inputs, especially capital. That said, much of the difference in countries’ living standards reflects differences in their productivity. Usually, the higher productivity is the better, but this is not always so. In the UK during the 1980s, labor productivity rose sharply, leading some economists to talk of a “productivity miracle”. Others disagreed, saying that productivity had risen because unemployment had risen – in other words, the least productive workers had been removed from the figures on which the average was calculated. There was a similar debate in the United States starting in the late 1990s. Initially, economists doubted that a productivity miracle was taking place. But by 2003, they conceded that during the previous five years the United States enjoyed the fastest productivity growth in any such period since the Second World War. Over the whole period from 1995, labor productivity growth averaged almost 3% a year, twice the average rate over the previous two decades. That did not stop economists debating why the miracle had occurred.
Industry:Economy
A mathematical way to describe the relationship between the quantity of inputs used by a firm and the quantity of output it produces with them. If the amount of inputs needed to produce one more unit of output is less than was needed to produce the last unit of output, then the firm is enjoying increasing returns to scale (or increasing marginal product). If each extra unit of output requires a growing amount of inputs to produce it, the firm faces diminishing returns to scale (diminishing marginal product).
Industry:Economy
In 1958, an economist from New Zealand, A. W. H. Phillips (1914–75), proposed that there was a trade-off between inflation and unemployment: the lower the unemployment rate, the higher was the rate of inflation. Governments simply had to choose the right balance between the two evils. He drew this conclusion by studying nominal wage rates and jobless rates in the UK between 1861 and 1957, which seemed to show the relationship of unemployment and inflation as a smooth curve. Economies did seem to work like this in the 1950s and 1960s, but then the relationship broke down. Now economists prefer to talk about the NAIRU, the lowest rate of unemployment at which inflation does not accelerate.
Industry:Economy
A description of what happens to unemployment when the rate of growth of GDP changes, based on empirical research by Arthur Okun (1928–80). It predicts that if GDP grows at around 3% a year, the jobless rate will be unchanged. If it grows faster, the unemployment rate will fall by half of what the growth rate exceeds 3% by; that is, if GDP grows by 5%, unemployment will fall by 1 percentage point. Likewise, a lesser, say 2%, increase in GDP would be associated with a half a percentage point increase in the jobless rate. This relationship is not carved in stone, as it merely reflects the American economy during the period studied by Okun. Even so, in most economies Okun’s Law is a reasonable rule of thumb for estimating the likely impact on jobs of changes in output.
Industry:Economy
