Marshalliansk

Marshallianism is an economic theory developed by Alfred Marshall, a British economist, in the late 19th and early 20th centuries. It is a form of marginalism, which focuses on the analysis of individual decisions and their impact on the economy as a whole. Marshallianism emphasizes the role of individual consumers and firms in determining prices and quantities in a market economy.

The theory is based on the concept of marginal utility, which posits that consumers derive utility from consuming goods and services. According to Marshall, consumers will continue to consume a good until the marginal utility they derive from the last unit consumed equals the price of that unit. This principle is known as the law of marginal utility.

Marshall also introduced the concept of marginal cost, which refers to the additional cost incurred by producing one more unit of a good. Firms, according to Marshallianism, will continue to produce until the marginal cost of producing the next unit equals the price at which the good is sold. This principle is known as the law of marginal cost.

Marshallianism also emphasizes the role of competition in determining prices and quantities. In a competitive market, firms are price takers, meaning they cannot influence the price of their goods. Instead, prices are determined by the interaction of supply and demand. Marshall argued that competition leads to efficient allocation of resources, as firms and consumers make rational decisions based on their marginal utilities and costs.

Marshallianism has had a significant influence on modern economics, particularly in the areas of consumer theory, production theory, and industrial organization. It provides a foundation for understanding how prices and quantities are determined in a market economy and how firms and consumers make decisions based on their marginal utilities and costs.