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Estimated number by which the amount of a capital investment (or a change in some other component of aggregate demand) is multiplied to give the total amount by which the national income is increased. This multiplier takes all direct and indirect benefits from that investment (or from the change in demand) into account. Expressed as the reciprocal of the marginal propensity to save.Read more: http://www.businessdictionary.com/definition/economic-multiplier.html#ixzz35ucsYJzO
These are terms used in associations with a probable (yet uncertain) boost in ecomony due to a an economic boom coming as a result of some development, discovery, invention, ... etc
Ratio of Increase in National income over demand.
Multiplier economy economic multiplier is a quantitative measure of the economic impact, which is an explicit recognition that the local economies, or national, or even global is an interconnected network for a range of economic activities, and when it gets a change in place or some part of the network, the effects will multiply or proliferate in the same place In every place of that system. These effects are produced in holistic effect is greater than the effects that can be caused by the change in the original if it happened in isolation from the rest of the economic activities.