IBonomicsBusiness Cycle – Real GDP Over TimeSL
MacroeconomicsA diagram illustrating the fluctuations in real GDP over time, including periods of boom, recession, peak, and trough, relative to the long-term trend of economic growth.
Curves and elements
- trend
- Trend: The long-term growth path of the economy's potential output.
- gdp
- Real GDP: The actual level of output fluctuating above and below the trend line.
- peak
- Peak: The highest point in a cycle before a downturn begins.
- trough
- Trough: The lowest point in a cycle, signaling the end of a recession.
- boom
- Boom: A phase of above-trend growth with falling unemployment and rising inflation.
- recession
- Recession: A phase of below-trend growth, often with rising unemployment and declining inflation.
Key explanations
- 1
The business cycle shows the periodic fluctuations in real GDP around the long-term trend line.
- 2
A boom is a period of rapid economic growth above the long-term trend, often leading to inflationary pressure.
- 3
A peak marks the highest point of GDP before economic activity begins to slow down.
- 4
A recession is characterized by a decline in real GDP, typically for two consecutive quarters, leading to higher unemployment and lower inflation.
- 5
The trough is the lowest point of the cycle, from which the economy begins to recover.
- 6
The trend line represents the potential output of the economy if all resources were used efficiently over time.
Example exam question
Using a diagram, explain the phases of the business cycle and how they affect unemployment and inflation.
Show example answer
The business cycle includes four main phases: boom, peak, recession, and trough. During a boom, GDP grows faster than trend, unemployment falls, and inflation rises. At the peak, the economy reaches its maximum output. A recession follows, where GDP falls, unemployment rises, and inflation drops. Finally, at the trough, the economy bottoms out and begins to recover. Policymakers often use fiscal and monetary policy to smooth out these fluctuations.
