1.2.4.3 Limitations of cardinal approach

The cardinal approach to the theory of consumer behavior, which assumes that utility can be measured and quantified numerically, has several significant limitations and challenges. Some of the main limitations of the cardinal approach are as follows:

1. Subjectivity of Utility Measurement: The cardinal approach assumes that consumers can assign precise numerical values to their utility levels for different goods and services. However, utility is a subjective concept, and individuals’ preferences and satisfaction levels cannot be objectively measured or quantified. Different people may have different preferences and interpretations of utility, making cardinal utility numbers inherently subjective and challenging to compare across individuals.
2. Lack of Interpersonal Utility Comparison: In the cardinal approach, utility is treated as a personal and individualistic concept. It does not allow for meaningful interpersonal comparisons of utility. As a result, it becomes challenging to make welfare or social judgments based on cardinal utility numbers, making it difficult to analyze overall societal welfare or utility.
3. Utility Maximization Assumption: The cardinal approach assumes that consumers are utility maximizers and make choices to maximize their overall satisfaction. However, in reality, consumers may not always act as perfect utility maximizers due to cognitive limitations, bounded rationality, or other behavioral factors.
4. No Objective Measurement of Utility: Despite the assumption of numerical measurement, there is no objective or empirical way to measure utility in real-world terms. The cardinal approach cannot be verified or tested through empirical observation or experimentation, making it less scientifically robust.
5. Indeterminacy of Utility Units: In the cardinal approach, the unit of measurement for utility is not defined or standardized. There is no universal unit to measure utility, leading to ambiguity in the magnitude of utility numbers assigned by consumers.
6. Focus on Marginal Utility: While cardinal utility is used to explain consumer choices, the primary focus is often on marginal utility (the additional utility gained from consuming an additional unit). However, the measurement and significance of cardinal utility at specific levels of consumption remain uncertain.