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Challenging Assumptions in Economics – A Pathway to Deeper Understanding

Geoff Riley

18th December 2024

In the world of economics, theories often serve as a lens through which we attempt to understand complex human behaviour and market dynamics. These theories, however, rely on simplified assumptions that may not always hold true in the real world. While these assumptions make models manageable and easier to analyse, they can sometimes paint an incomplete or misleading picture of reality.

Challenging Assumptions in Economics – A Pathway to Deeper Understanding

Join us as we explore eight key assumptions that shape economic theory, question their validity, and discuss their implications for real-world phenomena. After all, challenging assumptions is not just an academic exercise—it’s a step toward crafting more inclusive and effective economic policies.

Here’s a summary of the main points:

  1. Rational Behaviour: Assumes consumers always maximize utility, but behavioral economics shows decisions are often influenced by biases like anchoring or loss aversion.
  2. Ceteris Paribus (All Else Being Equal): Assumes isolation of variables, whereas real-world factors interact dynamically, potentially negating theoretical predictions.
  3. Law of Diminishing Marginal Returns: Suggests diminishing returns with increased input, but industries with technological advances, like software development, may see increasing returns.
  4. Financial Market Efficiency: Assumes markets are efficient and reflect all information, but real-world anomalies like bubbles and crashes indicate inefficiencies driven by emotional and speculative behavior.
  5. Global Trade Benefits All Parties: Assumes free trade is mutually beneficial, yet developing nations may face structural disadvantages, and trade can exacerbate inequality.
  6. Minimum Wage and Unemployment: Predicts higher minimum wages cause unemployment; however, empirical evidence suggests minimal effects due to improved productivity and increased consumer spending.
  7. Foreign Direct Investment (FDI) in Developing Economies: Assumes FDI always promotes growth, but it can result in profit repatriation, local firm displacement, and dependency on foreign entities.
  8. Immigration and Native Wages: Suggests immigration reduces native wages, but evidence often shows complementary effects, boosting productivity and overall economic growth.

The overarching message emphasizes questioning and critically analyzing the assumptions underlying economic theories, particularly in exam contexts, to develop nuanced and high-scoring responses.

Geoff Riley

Geoff Riley FRSA has been teaching Economics for over thirty years. He has over twenty years experience as Head of Economics at leading schools. He writes extensively and is a contributor and presenter on CPD conferences in the UK and overseas.

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