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If output increases by more than the proportional change in all inputs, there are increasing returns to scale (IRS). For example, when inputs (labor and capital) increase by 100%, the increase in output is greater than 100%. The main reason for the increasing returns to scale is the increase in production efficiency due to the expansion of the ...
For example, if there are increasing returns to scale in some range of output levels, but the firm is so big in one or more input markets that increasing its purchases of an input drives up the input's per-unit cost, then the firm could have diseconomies of scale in that range of output levels.
With increasing returns to scale, countries that are identical still have an incentive to trade with each other. Industries in specific countries concentrate on specific niche products, gaining economies of scale in those niches. Countries then trade these niche products to each other – each specializing in a particular industry or niche product.
Returns to scale can be Increasing returns to scale: doubling all input usages more than doubles output. Decreasing returns to scale: doubling all input usages less than doubles output. Constant returns to scale: doubling all input usages exactly doubles output.
The presence of increasing returns means that a one percent increase in the usage levels of all inputs would result in a greater than one percent increase in output; the presence of decreasing returns means that it would result in a less than one percent increase in output. Constant returns to scale is the in-between case.
There is no entirely satisfactory way to define increasing or decreasing returns to scale for general production sets. If the production set Y can be represented by a production function F whose argument is the input subvector of a production vector, then increasing returns to scale are available if F (λ y ) > λ F ( y ) for all λ > 1 and F ...
If the coefficient is 1, then production is experiencing constant returns to scale. Note that returns to scale may change as the level of production changes. [2] A different usage of the term "output elasticity" is defined as the percentage change in output per one percent change in all the inputs. [3] The coefficient of output elasticity can ...
Where = 1 (Constant return to scale), < 1 (Decreasing return to scale), > 1 (Increasing return to scale). As its name suggests, the CES production function exhibits constant elasticity of substitution between capital and labor.