The Business Cycle and the Psychological Drivers of Economic Growth

Measurement of Economic Productivity

  • Real GDP as a Function of Time:

    • Axis Definition: In a standard economic plot, the vertical axis represents Real GDP and the horizontal axis represents time.

    • Real vs. Nominal GDP: Real GDP is an actual measure of the goods and services produced by an economy or its true productivity. It is distinguished from nominal GDP, which does not account for price changes (inflation).

    • Productivity: This is defined essentially as how much each individual person in an economy can produce.

Drivers of the Long-Term Economic Trend

  • The Long-Term Trend Line: Most properly functioning economies exhibit a steady upward trend in Real GDP over long periods of time. This trend is driven by two primary factors:

    1. Population Growth: Most countries experience a population that grows over time, providing more labor input.

    2. Improving Productivity: On a per-person basis, individuals become more capable of producing more over time.

  • Factors Leading to Productivity Increases:

    • Technology: This is considered the main driver of productivity gains.

    • Discovery of Resources: Identifying new raw materials or energy sources.

    • New Business Processes: Implementing more efficient ways of organizing labor and capital (sometimes categorized under technology, but distinct as a method of organization).

The Nature of the Business Cycle

  • Definition: The Business Cycle refers to the fluctuations of Real GDP around the long-term trend line. It is the reality of economic growth versus the idealized smooth trend line.

  • Measuring a Cycle: A single cycle can be measured from peak to peak or from trough to trough.

  • Key Characteristics:

    • Inconsistency: The economy does not follow a nice, steady growth path; it has periods of fast growth followed by periods of recession.

    • Unpredictability: Despite the term "cycle," the pattern is not a well-defined, predictable, or sinusoid pattern. Economists frequently struggle to predict when a cycle will shift.

    • Varying Duration: In general, the period of time between every peak and every trough is inconsistent. Historical observations suggest cycles often occur in intervals of approximately 77, 88, or 1010 years, but there is no fixed regularity.

Phases of the Business Cycle

  • Expansion:

    • The phase where the economy is literally expanding.

    • Characterized by an increase in the production of goods and services.

    • Often involves Real GDP moving above the long-term trend line.

  • Recession:

    • The phase where the economy begins to shrink or "recede."

    • Characterized by a reduction in total output.

  • Depression:

    • A categorization for an exceptionally severe recession.

    • The Anecdotal Distinction: A common joke in economics states: "When your neighbor loses his job, it's a recession. When you lose your job, it is a depression."

Limitations of Classical Economic Models

  • Aggregate Supply and Demand: While models like Aggregate Demand and Aggregate Supply attempt to explain these cycles, the speaker notes they should be viewed with a "huge grain of salt."

  • Oversimplification: Classical models are arguably overly simplified and often omit the most important factor in market and economic cycles: Human Emotions.

  • Behavioral Economics: New fields like behavioral economics and behavioral finance attempt to incorporate human psychology, but these factors are traditionally excluded from freshman-level classical models because they do not fit "neatly."

The Psychological and Emotional Arc of the Business Cycle

  • The Power of Memory and Extrapolation:

    • Early Expansion (Skepticism): At the start of an expansion, people remain skeptical. They remember previous layoffs, bankruptcies, and the pain of being unable to pay bills. Consequently, they are hesitant to spend or invest.

    • Mid-Expansion (Confidence): As the expansion continues and the memory of previous pain fades, people become more confident. They see fewer layoffs and higher hiring rates, leading to increased optimism.

    • Late Expansion (Over-Optimism/Bulishness): People begin to extrapolate the recent past to the future. Because it has been a long time since a major layoff or bankruptcy, they underestimate risk and assume growth will continue indefinitely.

    • Misallocation of Investment: During peak euphoria, people become "too bullish," spending and investing money as if growth is guaranteed, leading to the misallocation of capital.

  • Specific Emotional Stages (The Transition from Growth to Decline):

    1. Optimism: Positive outlook on growth.

    2. Excitement: Increased enthusiasm for the market.

    3. Thrill: Intense excitement fueled by recent financial gains; leads to aggressive investing (e.g., buying Pets.com or flipping houses).

    4. Euphoria: Maximum over-confidence; belief that money is "easy" and labor is no longer necessary for income.

    5. Anxiety: First signs of bad investments or missed expectations emerge.

    6. Denial: Ignoring signs of a recession; rationalizing that "things are different this time" or that "the internet changes everything."

    7. Fear: Realization that the downturn is substantial.

    8. Desperation/Panic: Intense emotional reaction as the recession deepens; in stock markets, this results in mass selling; in general economies, it results in underspending and hoarding.

    9. Capitulation: The belief that things will never improve.

    10. Despondency and Depression: The emotional low point mirroring the economic trough.

    11. Hope and Relief: As growth resumes, people feel a sense of relief that conditions are no longer worsening, eventually leading back to optimism.

  • The Paradox of Investment:

    • Emotionally, the "Euphoria" phase feels like the best time to invest, but it is actually the worst.

    • The "Depressed/Despondent" phase feels like the worst time to invest, but it is actually the best time, as growth is poised to return.