Adam Smith is widely recognized as the father of modern economics due to his groundbreaking work, 'The Wealth of Nations', published in 1776.

Classical Economics, associated with economists like Adam Smith and David Ricardo, places central importance on the forces of supply and demand in shaping economic outcomes.

William Stanley Jevons is credited with developing the theory of marginal utility, which emphasizes the importance of the additional satisfaction derived from consuming each additional unit of a good or service.

Monetarism, associated with economists like Milton Friedman, emphasizes the role of money supply in influencing economic activity and inflation.

Joseph Schumpeter's theory of business cycles emphasizes the role of innovation and technological change in driving economic fluctuations.

Keynesian Economics, developed by John Maynard Keynes, argues that government spending and monetary policy can be used to influence economic activity and combat recessions.

Adam Smith's concept of the invisible hand suggests that the pursuit of individual self-interest can lead to beneficial outcomes for society as a whole.

Marxian Economics, developed by Karl Marx, analyzes the relationship between labor, capital, and class dynamics in shaping economic systems.

John Muth's theory of rational expectations assumes that economic agents form their expectations about future economic conditions based on all available information.

Institutional Economics, associated with economists like Thorstein Veblen and John R. Commons, focuses on the role of institutions, customs, and social norms in shaping economic behavior and outcomes.

Leon Walras developed the theory of general equilibrium, which analyzes the interdependence of prices and quantities in a market system.

Austrian Economics, associated with economists like Ludwig von Mises and Friedrich Hayek, emphasizes the role of entrepreneurship, innovation, and market processes in shaping economic outcomes.

A.W. Phillips' Phillips curve illustrates the relationship between inflation and unemployment in the economy.

Behavioral Economics, associated with economists like Daniel Kahneman and Richard Thaler, incorporates insights from psychology to understand how individuals make economic decisions.

Eugene Fama's efficient market hypothesis suggests that stock prices reflect all available information and are therefore unpredictable.