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Intro to the Solow Model of Economic Growth
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Intro to the Solow Model of Economic Growth

Economic Growth: Puzzles and Insights

Post-War Economic Growth in Germany and Japan

  • Following World War II, both Germany and Japan experienced rapid economic growth despite suffering heavy losses during the war. This phenomenon raises questions about the factors driving their recovery.
  • The growth rates of Germany and Japan post-war were significantly higher than that of the United States, leading to curiosity about why the "losers" of the war outpaced the "winners."

China's Economic Growth Compared to Advanced Economies

  • In recent decades, China has achieved astonishing growth rates of 7 to 10% per year, resulting in a doubling of its standard of living every 7 to 10 years. In contrast, advanced economies like the U.S., Canada, and France grow at around 2%, doubling only once every 35 years.
  • Despite having better institutions (property rights, honest government) and more capital than China, advanced economies are growing slower. This contradiction prompts further investigation into economic models that explain these dynamics.

Introduction to the Solow Model of Economic Growth

  • To understand these puzzles, we will utilize the Solow Model of Economic Growth developed by Robert Solow, which distinguishes between two types of growth: catching up growth and cutting edge growth. Catching up can occur much faster than cutting-edge innovation.
  • An economic model simplifies complex realities; here we will use a basic version of the Solow Model focusing on key variables affecting economic growth.

Key Inputs in Production Function

  • The production function is central to understanding how resources are transformed into output:
  • Labor (L): Represents people; educated labor is more effective.
  • Human Capital: Combined with education (e), it enhances productivity.
  • Physical Capital (K): Includes factories and tools necessary for production.
  • Ideas (A): Knowledge on combining labor and capital effectively leads to increased output from existing inputs. Better ideas yield greater efficiency in production processes.

Future Exploration

Playlists: Economics [Intermediate] Pt.1 Principles of Economics: Macroeconomics Unit 3: Growth, Capital Accumulation, and the Economics of Ideas
Video description

Here's a quick growth conundrum, to get you thinking. Consider two countries at the close of World War II—Germany and Japan. At that point, they've both suffered heavy population losses. Both countries have had their infrastructure devastated. So logically, the losing countries should’ve been in a post-war economic quagmire. So why wasn't that the case at all? Following WWII, Germany and Japan were growing twice, sometimes three times, the rate of the winning countries, such as the United States. Similarly, think of this quandary: in past videos, we explained to you that one of the keys to economic growth is a country's institutions. With that in mind, think of China's growth rate. China’s been growing at a breakneck pace—reported at 7 to 10% per year. On the other hand, countries like the United States, Canada, and France have been growing at about 2% per year. Aside from their advantages in physical and human capital, there's no question that the institutions in these countries are better than those in China. So, just as we said about Germany and Japan—why the growth? To answer that, we turn to today's video on the Solow model of economic growth. The Solow model was named after Robert Solow, the 1987 winner of the Nobel Prize in Economics. Among other things, the Solow model helps us understand the nuances and dynamics of growth. The model also lets us distinguish between two types of growth: catching up growth and cutting edge growth. As you'll soon see, a country can grow much faster when it's catching up, as opposed to when it's already growing at the cutting edge. That said, this video will allow you to see a simplified version of the model. It'll describe growth as a function of a few specific variables: labor, education, physical capital, and ideas. So watch this new installment, get your feet wet with the Solow model, and next time, we'll drill down into one of its variables: physical capital. Helpful links: Puzzle of Growth: http://bit.ly/1T5yq18 Importance of Institutions: http://bit.ly/25kbzne Rise and Fall of the Chinese Economy: http://bit.ly/1SfRpDL Subscribe for new videos: http://bit.ly/1Rib5V8 Macroeconomics Course: http://bit.ly/1R1PL5x Next video: http://bit.ly/1RxdSzo Help us caption & translate this video! http://amara.org/v/IHQj/ 00:00 Growth Puzzles 01:54 Solow Model of Economic Growth 02:27 What is an Economic Model? 02:56 Production Function – Labor, Education, Capital, & Ideas