Utility theories is a term used in economics to describe models that explain how individuals choose between different courses of action based on their preferences and the expected outcomes of each choice. The phonetic transcription of this word is juːˈtɪlɪti ˈθɪəriz, with the stress on the first syllable of "utility" and the second syllable of "theories." The spelling of "utility" comes from the Latin word "utilitas," meaning usefulness, while "theories" has its roots in the Greek "theoria" or contemplation.
Utility theories, in the context of economics and decision-making, refer to a set of frameworks and models that aim to understand and explain individuals' preferences and choices. Utility, in this context, refers to the satisfaction or value that individuals derive from consuming goods and services or other activities.
Utility theories postulate that individuals make rational decisions based on their preferences and the available options. According to these theories, individuals seek to maximize their overall utility or satisfaction, and their choices are guided by this objective. Utility can be seen as a subjective concept, varying from person to person, and is often difficult to measure objectively.
One of the key concepts within utility theories is the idea that individuals are able to rank or order their preferences. This allows for the comparison of different options and the assessment of their relative desirability. Utility theories also emphasize the concept of diminishing marginal utility, which suggests that the additional satisfaction derived from consuming an additional unit of a good or service tends to decrease as the individual already has more of it.
Various utility theories, such as the cardinal and ordinal utility theories, have been developed to represent and explain individual preferences mathematically. These theories have applications in consumer theory, welfare economics, and other areas of economics, as well as in decision-making models in fields like psychology and behavioral economics.
The word "utility" comes from the Latin word "utilitas" meaning "usefulness". It first appeared in English in the 18th century to describe the quality of being useful or beneficial. The term "utility theory" refers to a branch of economics that analyzes individual and societal choices based on the usefulness or satisfaction derived from various options or outcomes. The theory was developed in the late 19th century by economists such as Jeremy Bentham and John Stuart Mill, who sought to explain human decision-making in terms of maximizing utility or happiness.