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Business & EconomicsHard

Famous Economic Theories and Economists

From the invisible hand to Schumpeter's creative destruction: 20 questions on the theorists who shaped economic thought. Which Keynesian concept links an initial spending to a larger rise in income? Which curve relates inflation and unemployment in the short run? Comparative advantage, monetarism, rational expectations, the 80/20 principle, two recent Nobel laureates (2014 and 2019), and the population/resources thesis. For real readers of economics.

20

Questions

4

Minutes

Tip: Use keys 1-4 to answer quickly

The 20 quiz questions

Question 1 : Which Scottish economist is considered the father of modern economics with his work "The Wealth of Nations"?

Possible answers:

  • Adam Smith
  • John Stuart Mill
  • Thomas Malthus
  • David Ricardo

Explanation: Adam Smith (1723-1790) published "The Wealth of Nations" in 1776, laying the foundations of market economy and the "invisible hand" concept.

Question 2 : Which German thinker developed the theory of class struggle and criticized capitalism in "Das Kapital"?

Possible answers:

  • Georg Hegel
  • Friedrich Engels
  • Max Weber
  • Karl Marx

Explanation: Karl Marx (1818-1883) analyzed capitalism and predicted its replacement by socialism then communism in his major work "Das Kapital".

Question 3 : Which American economist is the leader of monetarism and a critic of Keynesianism?

Possible answers:

  • Paul Samuelson
  • Alan Greenspan
  • Milton Friedman
  • John Kenneth Galbraith

Explanation: Milton Friedman (1912-2006), Nobel laureate 1976, advocated for money supply control and free markets, influencing Reagan and Thatcher.

Question 4 : What economic concept describes the process of "creative destruction" theorized by Joseph Schumpeter?

Possible answers:

  • The nationalization of companies
  • Monetary devaluation
  • Innovation replacing obsolete industries
  • Company merger

Explanation: Schumpeter's creative destruction describes how innovation destroys old economic structures to create new ones, driving capitalism forward.

Question 5 : Which economist formulated the law of comparative advantage in international trade?

Possible answers:

  • Adam Smith
  • Jean-Baptiste Say
  • David Ricardo
  • John Stuart Mill

Explanation: David Ricardo (1772-1823) demonstrated that even a less efficient country in all areas benefits from specializing in what it does relatively best.

Question 6 : Which economic theory states that "supply creates its own demand"?

Possible answers:

  • Say's law
  • The Pareto law
  • Gresham's law
  • Walras's law

Explanation: Say's Law, formulated by Jean-Baptiste Say (1767-1832), states that production generates income that allows purchasing that production.

Question 7 : Which Austrian economist, Keynes's rival, defended liberalism in "The Road to Serfdom"?

Possible answers:

  • Murray Rothbard
  • Friedrich Hayek
  • Carl Menger
  • Ludwig von Mises

Explanation: Friedrich Hayek (1899-1992), Nobel laureate 1974, criticized state intervention and defended free markets as guarantors of freedom.

Question 8 : What concept describes the situation where 20% of causes produce 80% of effects?

Possible answers:

  • The Phillips curve
  • The Veblen effect
  • The Pareto principle
  • Goodhart's law

Explanation: The Pareto Principle (or 80/20 rule), observed by Vilfredo Pareto, shows that wealth and effort distribution often follows this ratio.

Question 9 : Which curve illustrates the inverse relationship between inflation and unemployment in the short term?

Possible answers:

  • The Phillips curve
  • The IS-LM curve
  • The Lorenz curve
  • The Laffer curve

Explanation: The Phillips Curve, proposed by A.W. Phillips in 1958, shows that low inflation often accompanies high unemployment and vice versa.

Question 10 : Which economist theorized state intervention to stimulate the economy during crises?

Possible answers:

  • Friedrich Hayek
  • Milton Friedman
  • John Maynard Keynes
  • Adam Smith

Explanation: John Maynard Keynes (1883-1946) revolutionized economic thought with his "General Theory" (1936), advocating state intervention and stimulus through public spending during recessions.

Question 11 : Which theory suggests that beyond a certain threshold, raising taxes reduces tax revenue?

Possible answers:

  • The Lorenz curve
  • The Gini coefficient
  • The multiplier effect
  • The Laffer curve

Explanation: The Laffer Curve, popularized by Arthur Laffer, shows that an excessively high tax rate discourages economic activity and reduces revenue.

Question 12 : Which French economist received the 2014 Nobel Prize for his work on market regulation?

Possible answers:

  • Jean Tirole
  • Esther Duflo
  • Maurice Allais
  • Thomas Piketty

Explanation: Jean Tirole was awarded for his analysis of market power and regulation, particularly in network industries and oligopolies.

Question 13 : Which Keynesian concept describes the increase in income generated by an initial expenditure?

Possible answers:

  • The crowding-out effect
  • The multiplier effect
  • The wealth effect
  • The liquidity trap

Explanation: The multiplier effect shows that a €100 expenditure can generate more than €100 in total income as money circulates and is re-spent multiple times.

Question 14 : Which economist developed the theory of rational expectations, challenging Keynesianism?

Possible answers:

  • James Tobin
  • Robert Lucas
  • Franco Modigliani
  • Gary Becker

Explanation: Robert Lucas, Nobel laureate 1995, showed that economic agents anticipate government policies, limiting their effectiveness.

Question 15 : Which economist theorized that population growth exceeds that of food resources?

Possible answers:

  • Thomas Malthus
  • Jeremy Bentham
  • Nassau Senior
  • David Ricardo

Explanation: Thomas Malthus (1766-1834) predicted in his "Essay on the Principle of Population" that overpopulation would lead to famines and wars.

Question 16 : Which French-American economist received the 2019 Nobel Prize for her work on poverty?

Possible answers:

  • Elinor Ostrom
  • Esther Duflo
  • Claudia Goldin
  • Janet Yellen

Explanation: Esther Duflo, along with Abhijit Banerjee and Michael Kremer, was awarded for her experimental approach to fighting global poverty.

Question 17 : What concept describes the situation where "bad" money drives "good" money out of circulation?

Possible answers:

  • Gibson's paradox
  • Say's law
  • Gresham's law
  • The Cantillon effect

Explanation: Gresham's Law, attributed to Thomas Gresham in the 16th century, explains that people hoard valuable coins and spend the less valuable ones.

Question 18 : Which economist analyzed wealth inequality in "Capital in the Twenty-First Century"?

Possible answers:

  • Amartya Sen
  • Paul Krugman
  • Joseph Stiglitz
  • Thomas Piketty

Explanation: Thomas Piketty, French economist, showed that the return on capital exceeds economic growth, mechanically widening inequalities.

Question 19 : Which economist introduced the concept of "opportunity cost" in economic analysis?

Possible answers:

  • Eugen von Böhm-Bawerk
  • Léon Walras
  • Carl Menger
  • Friedrich von Wieser

Explanation: Friedrich von Wieser, Austrian economist, formalized opportunity cost: the cost of what is given up when making an economic choice.

Question 20 : Which economic theory states that markets naturally tend toward general equilibrium?

Possible answers:

  • The IS-LM model
  • Game theory
  • The quantity theory of money
  • Walras's general equilibrium

Explanation: Léon Walras (1834-1910) developed general equilibrium theory, showing how all markets balance simultaneously through prices.

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