A social science that
studies how individuals, governments, firms and nations make choices on
allocating scarce resources to satisfy their unlimited wants. Economics can
generally be broken down into: macroeconomics, which concentrates on the
behavior of the aggregate economy; and microeconomics, which focuses on
individual consumers.
It is study of the
production and consumption of goods and the transfer of wealth to produce and
obtain those goods. Economics explains how people interact within markets to
get what they want or accomplish certain goals. Since economics is a driving
force of human interaction, studying it often reveals why people and governments
behave in particular ways.
Macro
and Microeconomics
Micro and
macroeconomics are intertwined; as economists gain understanding of certain
phenomena, they can help nations and individuals make more informed decisions
when allocating resources. The systems by which nations allocate their
resources can be placed on a spectrum where the command economy is on the one
end and the market economy is on the other. The market economy advocates forces within a competitive market,
which constitute the "invisible hand", to determine how resources
should be allocated. The command economic system relies on the government to
decide how the country's resources would best be allocated. In both systems,
however, scarcity and unlimited wants force governments and individuals to
decide how best to manage resources and allocate them in the most efficient way
possible.
Microeconomics
The branch of economics that analyzes the market behavior of
individual consumers and firms in an attempt to understand the decision-making
process of firms and households. It is concerned with the interaction between
individual buyers and sellers and the factors that influence the choices made
by buyers and sellers. In particular, microeconomics focuses on patterns of
supply and demand and the determination of price and output in individual.
Microeconomics is the
study of decisions that people and businesses make regarding the allocation of
resources and prices of goods and services. This means also taking into account
taxes and regulations created by governments. Microeconomics focuses on supply
and demand and other forces that determine the price levels seen in the
economy. For example, microeconomics would look at how a specific company could
maximize it's production and capacity so it could lower prices and better
compete in its industry.
Markets
Microeconomics examines
how entities, forming a market structure, interact within a market to create a
market system. These entities include private and public players with various
classifications, typically operating under scarcity of tradeable units and
government regulation. The item traded may be a tangible product such as apples
or a service such as repair services, legal counsel, or entertainment.
Production,
cost, and efficiency
In microeconomics,
production is the conversion of inputs into outputs. It is an economic process
that uses inputs to create a commodity for exchange or direct use. Production
is a flow and thus a rate of output per period of time. Distinctions include
such production alternatives as for consumption.
Opportunity cost refers
to the economic cost of production: the value of the next best opportunity
foregone. Choices must be made between desirable yet mutually exclusive
actions. It has been described as expressing "the basic relationship
between scarcity and choice.
Supply
and demand
The supply and demand
model describes how prices vary as a result of a balance between product
availability and demand. Prices and quantities have been described as the most
directly observable attributes of goods produced and exchanged in a market
economy. The theory of supply and demand is an organizing principle for
explaining how prices coordinate the amounts produced and consumed. In
microeconomics, it applies to price and output determination for a market with
perfect competition, which includes the condition of no buyers or sellers large
enough to have price-setting power.
Firms
People frequently do
not trade directly on markets. Instead, on the supply side, they may work in
and produce through firms. The most obvious kinds of firms are corporations,
partnerships and trusts. According to Ronald Cease people begin to organize
their production in firms when the costs of doing business becomes lower than doing it on
the market. Firms combine labor and capital, and can achieve far greater economies
of than individual market trading.
Uncertainty
and game theory
Uncertainty in
economics is an unknown prospect of gain or loss, whether quantifiable as risk
or not. Without it, household behavior would be unaffected by uncertain
employment and income prospects, financial and capital markets would reduce to
exchange of a single instrument in each market period, and there would be no
communications industry. Given its different forms, there are various ways of
representing uncertainty and modeling economic agents' responses to it.
Market
failure
Pollution can be a
simple example of market failure. If costs of production are not borne by
producers but are by the environment, accident victims or others, then prices
are distorted.
The term "market
failure" encompasses several problems which may undermine standard
economic assumptions. Although economists categorise market failures
differently, the following categories emerge in the main texts.
Information asymmetries
and incomplete markets may result in economic inefficiency but also a
possibility of improving efficiency through market, legal, and regulatory
remedies, as discussed above.
Macroeconomics
Macroeconomics, on the other hand, is the
field of economics that studies the behavior of the economy as a whole and not
just on specific companies, but entire industries and economies. This looks at
economy-wide phenomena, such as Gross National
Product and how it is affected by
changes in unemployment, national income, rate of growth, and price levels. For
example, macroeconomics would look at how an increase/decrease in net exports
would affect a nation's capital account or how GDP would be affected by
unemployment rate.
Growth
Growth economics
studies factors that explain economic growth – the increase in output per
capita of a country over a long period of time. The same factors are used to
explain differences in the level of output per capita between countries, in
particular why some countries grow faster than others, and whether countries
converge at the same rates of growth.
Business
cycle
The economics of a
depression were the spur for the creation of "macroeconomics" as a
separate discipline field of study. During the Great Depression of the 1930s,
John Maynard Keynes authored a book entitled The General Theory of Employment,
Interest and Money outlining the key theories of Keynesian economics. Keynes
contended that aggregate demand for goods might be insufficient during economic
downturns, leading to unnecessarily high unemployment and losses of potential
output.
Unemployment
The amount of
unemployment in an economy is measured by the unemployment rate, the percentage
of workers without jobs in the labor force. The labor force only includes
workers actively looking for jobs. People who are retired, pursuing education,
or discouraged from seeking work by a lack of job prospects are excluded from
the labor force. Unemployment can be generally broken down into several types
that are related to different causes.
Inflation
and monetary policy
Money is a means of
final payment for goods in most price system economies and the unit of account
in which prices are typically stated. A very apt statement by Professor Walker,
a well-known economist is that, " Money is what money does." Money
has a general acceptability, a relative consistency in value, divisibility,
durability, portability, elastic in supply and survives with mass public
confidence. It includes currency held by the nonbank public and checkable
deposits.
Fiscal
policy
Governments implement
fiscal policy by adjusting spending and taxation policies to alter aggregate
demand. When aggregate demand falls below the potential output of the economy,
there is an output gap where some productive capacity is left unemployed.
Governments increase spending and cut taxes to boost aggregate demand.
Resources that have been idled can be used by the government.
International
economics
International trade
studies determinants of goods-and-services flows across international
boundaries. It also concerns the size and distribution of gains from trade.
Policy applications include estimating the effects of changing tariff rates and
trade quotas. International finance is a macroeconomic field which examines the
flow of capital across international borders, and the effects of these
movements on exchange rates. Increased trade in goods, services and capital
between countries is a major effect of contemporary globalization.
The distinct field of
development economics examines economic aspects of the economic development
process in relatively low-income countries focusing on structural change,
poverty, and economic growth. Approaches in development economics frequently
incorporate social and political factors.
Economic systems is the branch of economics that
studies the methods and institutions by which societies determine the
ownership, direction, and allocation of economic resources. An economic system
of a society is the unit of analysis.
Among contemporary
systems at different ends of the organizational spectruspectrum are socialist
systems and capitalist systems, in which most production occurs in respectively
state-run and private enterprises. In between are mixed economies. A common
element is the interaction of economic and political influences, broadly
described as political economy. Comparative economic systems studies the relative
performance and behavior of different economies or systems.
Empirical
investigation
Economic theories are
frequently tested empirically, largely through the use of econometrics using
economic data. The controlled experiments common to the physical sciences are
difficult and uncommon in economics, and instead broad data is observationally
studied; this type of testing is typically regarded as less rigorous than
controlled experimentation, and the conclusions typically more tentative.
However, the field of experimental economics is growing, and increasing use is
being made of natural experiments.
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