Definition
Alfred Marshall (1842–1924) was a British economist who is widely regarded as one of the founders of neoclassical economics. He is best known for his seminal work Principles of Economics (1890), which introduced concepts such as price elasticity of demand, consumer surplus, and the distinction between the short‑run and long‑run equilibrium.
Overview
Born on July 26, 1842, in Clapham, London, Marshall studied at St. John’s College, Cambridge, where he later became a fellow and lecturer. He served as Professor of Political Economy at the University of Cambridge from 1885 until his retirement in 1908. Marshall’s contributions shaped the teaching of economics in the United Kingdom and beyond, influencing generations of economists, including John Maynard Keynes. His work blended mathematical analysis with a strong emphasis on empirical observation and the welfare implications of economic activity.
Etymology/Origin
The name “Alfred” derives from the Old English Ælfræd, meaning “elf counsel” (ælf “elf” + rǣd “counsel”). “Marshall” originates from the Old French maréchal (later Middle English marshal), originally denoting a horse servant or a high‑ranking officer. The combination is a personal name common in English‑speaking cultures and does not carry specific meaning related to his profession.
Characteristics
- Microeconomic Foundations: Marshall formalized the analysis of individual markets, introducing the supply‑and‑demand framework that remains central to microeconomics.
- Partial Equilibrium Analysis: He pioneered the method of examining a single market in isolation while holding other factors constant, a technique known as partial equilibrium.
- Consumer and Producer Surplus: Marshall quantified welfare effects by defining consumer surplus (the difference between what consumers are willing to pay and what they actually pay) and producer surplus.
- Elasticity of Demand: He introduced the concept of price elasticity, measuring how quantity demanded responds to price changes.
- Time Horizons: Marshall distinguished between the “short run,” where at least one factor of production is fixed, and the “long run,” where all inputs can be varied.
- Integration of Theory and Policy: He advocated for the use of economic theory to inform public policy, particularly in areas such as education, labor, and social welfare.
Related Topics
- Neoclassical economics
- Supply and demand
- Price elasticity of demand
- Consumer surplus
- Partial equilibrium analysis
- John Maynard Keynes (student of Marshall)
- Principles of Economics (1890)
- Cambridge School of Economics
- Welfare economics
All information presented is based on established historical and economic sources.