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Macroeconomics is a branch of economics that deals with the performance, structure, behavior, and decision-making of an economy as a whole. [1] This includes regional, national, and global economies .
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.
In neoclassical economics, on the other hand, the preoccupation with society's long term growth and development inherent in classical economics was abandoned altogether; instead, economic analysis came to focus on the study of the relationship between given ends and given scarce means, forming the concept of general equilibrium theory within an ...
An economic model is a theoretical construct representing economic processes by a set of variables and a set of logical and/or quantitative relationships between them. The economic model is a simplified, often mathematical, framework designed to illustrate complex processes.
The General Theory is a sustained attack on the classical economics orthodoxy of its time. It introduced the concepts of the consumption function, the principle of effective demand and liquidity preference, and gave new prominence to the multiplier and the marginal efficiency of capital.
In microeconomics, the law of demand is a fundamental principle which states that there is an inverse relationship between price and quantity demanded. In other words, "conditional on all else being equal , as the price of a good increases (↑) , quantity demanded will decrease (↓) ; conversely, as the price of a good decreases (↓ ...
Supply chain as connected supply and demand curves. In microeconomics, supply and demand is an economic model of price determination in a market.It postulates that, holding all else equal, the unit price for a particular good or other traded item in a perfectly competitive market, will vary until it settles at the market-clearing price, where the quantity demanded equals the quantity supplied ...
During the worldwide Great Depression of the 1930s, the theories of Keynesian economics disputed Say's conclusions. Scholars disagree on the question of whether it was Say who first stated the principle, [7] [8] but by convention, Say's law has been another name for the law of markets ever since John Maynard Keynes used the term in the 1930s.