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Elasticity of substitution is the ratio of percentage change in capital-labour ratio with the percentage change in Marginal Rate of Technical Substitution. [1] In a competitive market, it measures the percentage change in the two inputs used in response to a percentage change in their prices. [ 2 ]
The substitution effect is the change that would occur if the consumer were required to remain on the original indifference curve; this is the move from A to B. The income effect is the simultaneous move from B to C that occurs because the lower price of one good in fact allows movement to a higher indifference curve.
Thus, if many substitutions existed in the market, a consumer would have more choices and the elasticity of demand would be higher (elastic). In contrast, if there were few substitutions that existed in the market, consumers will have fewer choices and little to no available substitutes which means elasticity of demand would be lower (inelastic).
Under the standard assumption of neoclassical economics that goods and services are continuously divisible, the marginal rates of substitution will be the same regardless of the direction of exchange, and will correspond to the slope of an indifference curve (more precisely, to the slope multiplied by −1) passing through the consumption bundle in question, at that point: mathematically, it ...
Constant elasticity of substitution (CES) is a common specification of many production functions and utility functions in neoclassical economics.CES holds that the ability to substitute one input factor with another (for example labour with capital) to maintain the same level of production stays constant over different production levels.
A Cobb-Douglas utility function (see Cobb-Douglas production function) with two goods and income generates Marshallian demand for goods 1 and 2 of = / and = /. Rearrange the Slutsky equation to put the Hicksian derivative on the left-hand-side yields the substitution effect:
In economics, gross substitutes (GS) is a class of utility functions on indivisible goods.An agent is said to have a GS valuation if, whenever the prices of some items increase and the prices of other items remain constant, the agent's demand for the items whose price remain constant weakly increases.
Substitution effect: The substitution effect is the change in the quantity demanded of a good or service due to a change in the relative prices of substitute goods. When the price of a good increases, consumers may shift their consumption to relatively cheaper substitute goods, causing the demand for the original good to decrease.