Which of the following factors may lead to demand-pull inflation?

Question

BlackTom AI · Accepted Answer

Demand-pull inflation occurs when aggregate demand (AD) in an economy rises faster than aggregate supply (AS), pushing up the general price level.

1) Relevant concepts:
- Aggregate demand components: consumption (C), investment (I), government spending (G), and net exports (X − M).  
- Demand-pull inflation: a rightward shift in AD leads to higher output and higher prices, especially when the economy is near full capacity.  
- Cost-side effects: changes in production costs shift aggregate supply (AS) and affect prices differently (cost-push when costs rise; lower costs tend to reduce price pressure).

2) Step-by-step reasoning:
- An increase in disposable income means households have more after-tax income available to spend.  
- Higher disposable income typically raises consumption (C), one component of AD.  
- Higher consumption shifts the AD curve to the right (AD → AD').  
- With greater demand chasing the same short-run productive capacity, firms raise prices; thus the general price level increases (demand-pull inflation). This effect is strongest when spare capacity is limited.

3) (No numerical calculation is required here.) The logical chain is: disposable income ↑ → consumption ↑ → AD shifts right → price level ↑ (demand-pull inflation).

4) Why the correct answer is correct:
- Choice c directly increases an AD component (consumption), producing the classic mechanism for demand-pull inflation.

5) Why the other options are incorrect:
- a. A decrease in net export demand reduces AD (exports − imports falls), putting downward pressure on prices, not causing demand-pull inflation.  
- b. A decline in business confidence lowers investment (I) and can reduce AD, reducing inflationary pressure.  
- d. Lower costs of production shift short-run AS to the right (or reduce cost-push pressures), tending to lower prices or slow inflation rather than cause demand-pull inflation.

Conclusion: An increase in disposable incomes (option c) is the factor most likely to lead to demand-pull inflation. This matches the provided correct answer (c).

Which of the following factors may lead to demand-pull inflation?单项选择题

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