Marginal utility theory

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Marginal utility theory examines the increase in satisfaction consumers gain from consuming an extra unit of a good. Utility is an idea that people get a certain level of satisfaction/happiness/utility from consuming goods and service. Marginal utility is the benefit of consuming an extra unit This utility is not constant. Often we get diminishing marginal …

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Diminishing marginal utility of income and wealth

Diminishing marginal utility of income and wealth suggests that as income increases, individuals gain a correspondingly smaller increase in satisfaction and happiness. In layman’s terms – “more money may not make you happy” Alfred Marshall popularised concepts of diminishing marginal utility in his Principles of Economics (1890) “The additional benefit a person derives from a …

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The Law of Diminishing Marginal Returns

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Definition: Law of diminishing marginal returns At a certain point, employing an additional factor of production causes a relatively smaller increase in output. Diminishing returns occur in the short run when one factor is fixed (e.g. capital) If the variable factor of production is increased (e.g. labour), there comes a point where it will become …

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Utility maximisation

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Utility maximisation refers to the concept that individuals and firms seek to get the highest satisfaction from their economic decisions. For example, when deciding how to spend a fixed some, individuals will purchase the combination of goods/services that give the most satisfaction. Utility maximisation can also refer to other decisions – for example, the optimal …

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Cardinal and Ordinal Utility

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Summary: Cardinal utility gives a value of utility to different options. Ordinal utility just ranks in terms of preference. Cardinal Utility is the idea that economic welfare can be directly observable and be given a value. For example, people may be able to express the utility that consumption gives for certain goods. For example, if …

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Equimarginal principle

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The equimarginal principle states that consumers will choose a combination of goods to maximise their total utility. This will occur where The consumer will consider both the marginal utility MU of goods and the price. In effect, the consumer is evaluating the MU/price. This is known as the marginal utility of expenditure on each item …

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Marginal propensity to save (MPS)

Marginal propensity to save (MPS) refers to the proportion of any extra income that is saved by consumers. For an individual, the marginal propensity to save will reflect how much they want to put extra income into different forms of saving. For example, if a worker receives a pay rise of £1,000 and they add …

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Marginal Analysis in Economics

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In economics, marginal analysis means we look at the last unit of consumption/cost. It gives a different picture to the total cost. For example, the total cost of flying a plane from London to New York will be several thousand Pounds. However, with a plane 50% full, the cost of carrying one extra passenger is …

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