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Most economists identify as either macro- or micro-economists. Macroeconomics is traditionally divided into topics along different time frames: the analysis of short-term fluctuations over the business cycle , the determination of structural levels of variables like inflation and unemployment in the medium (i.e. unaffected by short-term ...
Public economics examines the design of government tax and expenditure policies and economic effects of these policies (e.g., social insurance programs). Urban economics, which examines the challenges faced by cities, such as sprawl, air and water pollution, traffic congestion, and poverty, draws on the fields of urban geography and sociology.
This approach is considered to be the trigger for exploring microfoundations, [1] however, the notion of a gap in the "micro-macro" link has been and continues to be explored in various theories and models. Critics of the Keynesian theory of macroeconomics argued that some of Keynes' assumptions were inconsistent with standard microeconomics.
The earlier term for the discipline was "political economy", but since the late 19th century, it has commonly been called "economics". [22] The term is ultimately derived from Ancient Greek οἰκονομία (oikonomia) which is a term for the "way (nomos) to run a household (oikos)", or in other words the know-how of an οἰκονομικός (oikonomikos), or "household or homestead manager".
A macroeconomic model is an analytical tool designed to describe the operation of the problems of economy of a country or a region. These models are usually designed to examine the comparative statics and dynamics of aggregate quantities such as the total amount of goods and services produced, total income earned, the level of employment of productive resources, and the level of prices.
New classical macroeconomics, sometimes simply called new classical economics, is a school of thought in macroeconomics that builds its analysis entirely on a neoclassical framework. Specifically, it emphasizes the importance of rigorous foundations based on microeconomics , especially rational expectations .
Marshall's original introduction of long-run and short-run economics reflected the 'long-period method' that was a common analysis used by classical political economists. However, early in the 1930s, dissatisfaction with a variety of the conclusions of Marshall's original theory led to methods of analysis and introduction of equilibrium notions.
Examples of aggregates in micro- and macroeconomics relative to less aggregated counterparts are: Food vs. apples; Price level and real GDP vs. the price and quantity of apples; Capital stock vs. the value of computers of a certain type and the value of steam shovels; Money supply vs. paper currency