The contribution of hicks and slutsky to comprehend consumer behaviour

Consumer behavior is studying what consumers buy and for what reason do they buy a certain good or service. Additionally it is the mental progression that comes after. Consumer behaviour is vital in economics because demand and price of something depend on the consumer and what they plan to purchase as well as for what price. In economics, theories on consumer behaviour concentrate on the buyer determined to increase enjoyment (utility) off their purchased good/service. For example if the price tag on good A increases, then consumers will buy less of an since it is more costly for them and for that reason less utility. Alternatively if the price tag on good A decreases then consumers will buy more, meaning more power. Consumer behavior is the connection between price change and consumer demand and what inspired the consumers to acquire the merchandise, taking other factors into consideration such as budget constraints.

John Hicks and Eugene Slutsky have greatly added to american economics all together and even more specifically the understanding of consumer behaviour/consumer choice in microeconomics. John Hicks created the Hicksian Demand Function and Slutsky created the Slutsky equation, which linked both Hicksian demand with Marshallian demand.

The two main the different parts of consumer theory are specific preferences and energy, and the budget constraint. Both of these factors are needed to derive a demand curve, more specifically the Marshallian demand curve (uncompensated demand curve or constant money income curve). What Hicks wanted to achieve is a demand curve with limited constraint and maximum electricity/satisfaction. On the traditional Marshallian demand curve, when price drops demand increases therefore real income increases. The climb in amount demanded is because of the full total price effect which include the income result and substitution impact. The substitution result is the change in variety purchased credited to a big change in price of any good e. g. if the price of good X is cheaper the average person will buy more of good X. The income effect is the climb or street to redemption of real income and purchasing power of the individual due to a price change of the nice. What Hicks and Slutsky sought was to make a demand curve with no income effect and also to be remaining with the substitution impact. This is the paid out demand curve or continuous real income demand curve. In order to achieve this, the demand curve would need to be developed from indifference theory.

An indifference curve is a curve/s demonstrating the intake of two different goods and how much utility it provides and which combinations are possible between your two goods keeping income constant. Both Hicks and Slutsky use the indifference curve/s to produce their own ideas on consumer behaviour. In the indifference curve the buyer is indifferent, i. e. they don't have a preference of 1 good above the other. It is presumed that the axioms of rational choice are in place. These axioms are Completeness, Transitivity and Continuity. These are central to all or any the ideas because if these change then your validity of the ideas using indifference curves will be infected. There are different power functions. For normal goods, this is a downward sloping curve with a declining gradient. But also for perfect substitute goods, they are downward sloping with a frequent gradient. For perfectly complimentary goods, the curve is an 'L' shape. In the graph there are an infinite amount of indifference curves on the graph. The marginal rate of substitution will determine the gradient of the curve. The marginal rate of substitution is the rate at which an individual is prepared to swap good A for B or vice versa.

On the same graph we can also place a budget line showing the consumers budget constraint. This is usually a downward sloping series with a constant gradient. The formula to work out the budget line is M = PxX + PyY where M is money income, Px and Py is price of Good X and Good Y respectively, X and Y is the quantity of X and Y respectively.

The slope or gradient can be influenced by factors such as price change of good A and/or good B. For instance a semester in the price tag on X would mean that the individual is able to purchase more of X, therefore level of X purchased increase. With the price tag on Y left over the same, this might mean that the budget collection would change, altering the gradient of the line, thus creating a new budget line compared to the original lines (one to two 2 on diagram below).

Where the budget lines and indifference curve intersect, that's where the utility is at its highest for the individual at the current income level. This is called the consumer equilibrium.

With a fresh budget line, we'd desire a new indifference curve (IC2) and for that reason a fresh consumer equilibrium. From here the purchase price intake curve can be derived by subscribing to all the buyer equilibrium points collectively. This method is also used to derive the income use curve, but this may only be produced if the new budget series is parallel to the initial budget lines i. e. they'll not intersect.

With this graph, the Marshallian demand curve can be acquired by using the level of good X where each consumer equilibrium point lays. This might be complimented by different price of good X to pinpoint the positions and therefore by linking the tips, a Marshallian demand curve is established.

What Hicks wished to achieve was a demand curve with no income effect because utility cannot be measured as such, which Alfred Marshall assumes The Marshallian demand curve shows the demand with income and substitution effects. By excluding the income result, it'll show how the individual will react to a price change with just the substitution result. Thus this will show how demand ranges with an alteration in cost. This assumes that as the price of the product changes, the individual is paid out enough to keep them on the initial indifference curve and for that reason there is no change in real income, nullifying the income impact. To be able to obtain this, Hicks relocated the new budget constraint collection so it will be a tangent to the original indifference curve. This is actually the Hicks compensating variation. The Hicks equal variation is first (original) budget line is relocated to the new indifference curve, which is the contrary set alongside the compensating variation where in fact the new budget brand and original indifference curve was moved

Both these variants would build a numerous demand curve set alongside the Marshallian curve. For normal goods, the Hicksian demand curve is steeper i. e. larger gradient than the Marshallian demand curve.

Hicks' demand function was further developed on by Eugene Slutsky. Even though Hicks' method was theoretically appropriate, it possessed a flaw which could not connect it to the real world. For Hicks' paid out demand curve to work in real life, you would need the precise indifference curve to find out the demand curve and therefore affect consumer income. To counter this predicament, Slutsky acquired a different solution to derive the compensated demand curve.

Hicks' method helps to keep utility level constant (before change in cost). This would also imply that the budget series would be the same as well. This method to separate the indifference curves into the substitution and income results is way better for welfare economic comparisons. As opposed to this, Slutsky's method held the consumption bundle identical as before. He targets a fresh indifference curve which compensates for the switch of the budget brand to be at the original level of ingestion and consumption pack. Slutsky's method places the consumer on a higher indifference curve.

For Slutsky's compensated variation, rather than moving the new budget range so it is a tangent to the indifference curve, he shifted the new budget series so that it would intersect the original consumer equilibrium. This might mean for a normal good the budget brand, in Slutsky's method, would be greater than Hicks' methodology. For Slutsky's equal variation, he shifted the original budget range where it could intersect with the new consumer equilibrium, rather than shifting the initial budget line to become tangent to the new indifference curve that was Hicks' solution to reduce the income result.

With Slutsky's method of eradicating the income effect on the indifference curves, a compensated demand curve can be created.

This new demand curve is steeper than the Marshallian demand curve (uncompensated) but doesn't have an increased gradient than Hicks' paid out curve (see graph below).

This graph shows the uncompensated (Marshallian) demand curve, labelled Dm. In addition, it shows the two types of compensated demand curve that happen to be Hicks' demand curve (Dh) and Slutsky's demand curve (Ds).

Because Slutsky's derivation of the demand curve uses the consumer equilibrium tips on the indifference curves, the paid out demand curve for Slutsky has less gradient (but nonetheless negative). This is because Slutsky uses higher points in the indifference curve to derive his version of the demand curve.

The demand curve shows us the development Hicks and Slutsky made out of demand functions. The uncompensated demand curve presents the demand for a specific good or service but with the income result and substitution result included. Within the graph, point X1 to X2 signifies the income impact and substitution effect. Alternatively, Hicks' (Dh) and Slutsky's (Ds) compensated demand curves show the demand in addition to the substitution impact only. The reason behind the difference between your two compensated demand curves is that in the Hicksian paid out demand curve, the income result is assumed to be bigger compared to Slutsky's income effect. Therefore in cases like this (the product being a normal good), Slutsky's approach to deriving the demand curve underestimates how big is the income result, so in turn he overestimates the substitution impact because if you move along the demand curve for Slutsky, the quantity of goods will increase or reduce more than Hicks' demand curve. As a result the Slutsky paid out demand curve has a lower gradient than Hicks.

Because of the different gradient of the compensated demand curves, this will deliver different results for consumer surplus computations. Consumer surplus can help evaluate how much tool or satisfaction a consumer obtains from a specific product or service

Consumer surplus is the difference between what the consumer is willing to pay for the nice or service (indicated by a spot on the demand curve) and what they actually pay for the good or service (market price). Additionally it is an economic way of measuring consumer satisfaction within the marketplace. It's the extra benefit the person receives when coming up with transactions at the marketplace price. Economists cannot measure utility so therefore they use company/consumer surplus as a money way of measuring utility change. Over a demand curve, consumer surplus is the area below the actual demand curve and above the purchase price range (triangular area).

The Marshallian demand curve only gives an estimate of consumer surplus because it includes consumer surplus gain or damage due to the income result whereas the Hicks paid out demand curve does not suffer from this issue, since real income remains fixed thus the focus is on the effect of price on number demanded. Which means that Hicks' compensated demand curve is theoretically exact, and it also gives us a far more accurate dimension of consumer surplus.

The only problem with Hicks' compensated demand curve is that you would need that exact indifference curve to work out the demand curve which is implausible though it is theoretically correct. That's where Slutsky's method would come because you certainly do not need this in order to work through the demand curve, and for that reason consumer surplus. The drawback of this method that it'll overestimate consumer surplus compared to Hicks but underestimate in comparison to Marshallian curve. Both Hicks and Slutsky methods are more accurate procedures of consumer surplus because they may have reduced the consequences of the income result.

In realization, John Hicks and Eugen Slutsky contributed greatly to the understanding of consumer behaviour. By using indifference curves, they developed the paid out demand curve, which nullified the income impact in order to find out consumer behaviour without taking purchasing electricity into account. This would find out the real demand habits for a good or service.

The demand function created by Alfred Marshall was very important for economics, who developed the Marshallian demand curve. However Hicks seen flaws in the model and therefore created his own theory. Hicks developed the differentiation between your income result and substitution result (both end up being the price impact). This therefore allowed the invention of the demand curve with only the substitution effect, therefore the change in comparative price could be viewed.

Hicks' method is theoretically appropriate but difficult to apply to the real world due to the inclusion of the precise indifference curve between two goods. This is unlikely to build because it is difficult. This is where Slutsky's method would help because in this technique you do not need the precise indifference curve to create the demand curve. The disadvantage is that Slutsky's method overestimates the substitution result, however the difference between Hicks and Slutsky is minimal and therefore Slutsky can be used.

These methods are essential to find consumer surplus. The Hicksian Demand Curve is the right one to utilize for consumer surplus computations, but we generally use the Marshallian curve because again the differences are minimal for simple calculations, and for more accurate measure than Marshallian, we'd use Slutsky. Consumer surplus is used by economists to evaluate power gained or lost in a price change. This method produced by Hicks was revolutionary because before his theory, it was near impossible to measure utility properly. Theoretically right, but again difficult to find the correct data. For that reason, Slutsky extended on Hicks theory giving a more reasonable approach, but burning off its accuracy. This is still more exact than working out the buyer surplus on the Marshallian demand curve.

Overall, Hicks and Slutsky revolutionized just how we understand consumer action from demand habits, with the way of measuring of consumer surplus by using power form the nice or service. The Marshallian demand curve overestimated consumer surplus as a result of income and substitution results. By isolating the substitution effect, we're able to see what consumers would do in a change of price of the good or service without purchasing power affecting results. This might show the genuine demand habits of something and also what consumers would give up in order to obtain that one good without wealth factors. Hicks effectively assessed this while Slutsky had taken a more natural approach to consumer patterns.

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