Macroeconomics is a sub-field of economics that examines the behavior of the economy as a whole, once all of the individual economic decisions of companies and industries have been summed. Economy-wide phenomena considered by macroeconomics include Gross Domestic Product (GDP) and how it is affected by changes in unemployment, national income, rate of growth, and price levels.
In contrast, microeconomics is the study of the economic behaviour and decision-making of individual consumers, firms, and industries.
Macroeconomics can be used to analyze how to influence government policy goals such as economic growth, price stability, full employment and the attainment of a sustainable balance of payments.
Macroeconomics is sometimes used to refer to a general approach to economic reasoning, which includes long term strategies and rational expectations in aggregate behavior.
Until the 1930s most economic analysis did not separate out individual economics behavior from aggregate behavior. With the Great Depression of the 1930s, suffered throughout the developed world at the time, and the development of the concept of national income and product statistics, the field of macroeconomics began to expand. Particularly influential were the ideas of John Maynard Keynes, who formulated theories to try to explain the Great Depression. Before that time, comprehensive national accounts, as we know them today, did not exist .
One of the challenges of economics has been a struggle to reconcile macroeconomic and microeconomic models.
China is a developing country with the biggest population in the world about 21% of the world population.But a weak economic foundation with relatively inadequate resources per capitaThese are its basic national conditions.These are its basic national conditions.Many contradictions and problems in China's economic and social development are closely associated with the issue of population,which has become the key factor and primary problem restricting China's economic and social development.Whether the population problem can be properly solved has the direct bearing on the improvement of the population quality and the living standards of the Chinese people,as well as the prosperity of the Chinese nation.It also concerns the world peace and development.
J系列3Jnrx党 2014-10-05
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