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Theory of Consumer Choice

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Consumer choice theory is a microeconomics branch that tries to relate preferences to both consumer demand curves and consumer expenditures. The theory analyses the way consumers maximize their need to consume which is measured by their preferences against the limited ways on their expenditure. Consumers do this by utility maximization subject to a constraint on their budget. Other times it gets referred to as the theory of consumer behavior. Through the study of this theory, researchers can explain why the consumers would buy more of the product when its price is less as compared to when its price is high. Another elaboration of the theory is that it shows the reason why the households spend their income as they always do (Haugtvedt, Herr, & Kardes, 2008). The greater assumption is that every consumer is rational and aims at maximizing their satisfaction.
Some major theories explain the consumer behavior. First is the Cardinalist approach or the marginal utility theory and the second is the ordinalist approach or the analysis of the indifference curves. The former describes extra satisfaction a consumer derives after consuming an extra unit of a commodity while consumption of all other products remains unchanged. The law of diminishing marginal utility gives a thorough elaboration on why the demand curves always have a downward sloping nature. The latter shows the line of combinations (indifference curves) of the quantity of two products say A and B such that the individual is indifferent between all combinations on the curve.
Theory of consumer choice and demand curves
The law of demand states that as the price of a product rises, the rate of consumption of the product declines despite the monetary compensation of the individual for the impact of the high price of the commodity. It is known

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