뒤로Macroeconomics: Inflation
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Inflation is the general increase in prices of goods and services over time, leading to a decrease in the purchasing power of money.
Inflation is commonly measured using price indices such as the Consumer Price Index (CPI) or the Producer Price Index (PPI).
Demand-pull inflation occurs when aggregate demand exceeds aggregate supply, pushing prices up.
Cost-push inflation happens when rising production costs, like wages or raw materials, increase overall prices.
Inflation reduces the purchasing power of money, meaning consumers can buy less with the same amount of money.
Hyperinflation is an extremely high and typically accelerating inflation rate, often exceeding 50% per month.
Inflation hurts savers by eroding the value of saved money but helps borrowers by reducing the real value of debt.
The inflation rate is calculated as \(\frac{P_t - P_{t-1}}{P_{t-1}} \times 100\), where P is the price level.
Headline inflation includes all items, while core inflation excludes volatile items like food and energy prices.
The Phillips Curve shows an inverse relationship between inflation and unemployment in the short run.
Central banks control inflation by adjusting interest rates and using monetary policy tools to influence aggregate demand.
Deflation is the general decrease in prices, the opposite of inflation, which can lead to reduced economic activity.
Stagflation is a situation with high inflation, high unemployment, and stagnant economic growth.
Inflation can redistribute income by hurting those on fixed incomes and benefiting those with assets that appreciate.
Nominal values are measured in current prices, while real values are adjusted for inflation.
The quantity theory of money links money supply to price level, expressed as \(MV=PY\).
Core inflation is used to assess underlying inflation trends by excluding volatile prices.
Inflation typically leads to higher nominal interest rates to maintain real returns for lenders.
The real interest rate is approximately \(i - \pi\), where i is nominal rate and \(\pi\) is inflation rate.