Short Answer

In the cardinal approach, utility is measured in numerical terms. It assumes that satisfaction or utility can be expressed in exact numbers like 1, 2, 3, and so on. These units are called utils.

In simple words, the cardinal approach treats utility as measurable. It helps compare satisfaction from different goods by assigning numbers, showing how much satisfaction a consumer gets from each unit of a product.

Detailed Explanation:

Cardinal utility meaning

The cardinal approach is a method in economics that measures utility in numerical terms. It assumes that satisfaction from consuming goods and services can be measured exactly using numbers. These numbers are called utils, which represent units of satisfaction.

For example, if a person eats an apple and gets 10 utils of satisfaction, and then eats another apple and gets 8 utils, we can clearly measure the change in satisfaction. This makes comparison easier between different goods and levels of consumption.

The cardinal approach is mainly used in traditional economic theory to explain consumer behavior in a simple and measurable way.

Measurement in cardinal approach

In the cardinal approach, utility is measured by assigning numerical values to satisfaction. Each unit of a good provides a certain number of utils. The total satisfaction is calculated by adding all these values.

For example, if a consumer gets 5 utils from the first unit of a good, 4 utils from the second, and 3 utils from the third, then total utility is 12 utils. This shows how satisfaction is measured step by step.

Marginal utility is also measured in the same way. It shows the additional utility gained from one more unit. So, the change in utility can be expressed clearly in numbers.

This makes it easy to analyze how consumption affects satisfaction.

Assumptions of cardinal utility

The cardinal approach is based on some important assumptions. It assumes that utility can be measured accurately in numbers. It also assumes that consumers are rational and aim to maximize their total utility.

Another assumption is that utility can be compared between different goods and individuals in a meaningful way. It assumes that satisfaction behaves in a consistent and measurable manner.

Although these assumptions are useful for theory, in real life utility cannot be measured exactly, but only felt.

Total and marginal utility measurement

In the cardinal approach, both total utility and marginal utility are measured using numbers.

Total utility is the sum of satisfaction from all units consumed. It increases as more units are consumed, but at a decreasing rate due to diminishing marginal utility.

Marginal utility is the additional satisfaction from one extra unit. It is calculated by finding the difference between total utility of two consecutive units.

For example, if total utility from 2 units is 15 utils and from 3 units is 20 utils, then marginal utility of the third unit is 5 utils.

This numerical measurement helps understand consumer behavior clearly.

Utility function concept

In the cardinal approach, utility is also expressed using a utility function. A utility function shows the relationship between quantity of goods consumed and total satisfaction.

For example, U = f(x) means utility depends on the amount of good x consumed. As consumption increases, utility changes according to the function.

This mathematical representation helps economists analyze consumption patterns in a structured way.

Use in consumer theory

The cardinal approach is widely used in traditional consumer theory. It helps explain how consumers allocate their income to maximize satisfaction.

Consumers compare marginal utility per unit of money spent on different goods. They choose goods that give higher utility per cost.

For example, if one product gives more utility per rupee than another, rational consumers will choose it.

This helps explain demand and consumer equilibrium in simple terms.

Limitations of cardinal measurement

Although the cardinal approach is useful, it has some limitations. In real life, utility is subjective and cannot be measured exactly in numbers. Satisfaction differs from person to person and cannot be calculated precisely.

For example, happiness from eating food cannot be exactly measured as 10 or 15 utils in real situations. It is only an assumption used for economic analysis.

Because of this limitation, modern economics also uses other approaches like ordinal utility, which ranks preferences instead of measuring exact values.

Importance of cardinal approach

Despite limitations, the cardinal approach is important because it provides a simple way to understand consumer behavior. It helps explain concepts like total utility, marginal utility, and consumer equilibrium in an easy manner.

It also helps in building basic economic models and understanding how consumers make decisions in the market.

Conclusion

In the cardinal approach, utility is measured in numerical terms called utils. It assumes that satisfaction can be measured and compared using numbers. Although it is a theoretical concept, it helps explain consumer behavior, utility changes, and decision-making in a simple and clear way.