Supply shock in the context of "Price gouge"

In economics, inflation is an increase in the average price of goods and services in terms of money. This increase is measured using a price index, typically a consumer price index (CPI). When the general price level rises, each unit of currency buys fewer goods and services; consequently, inflation corresponds to a reduction in the purchasing power of money. The opposite of CPI inflation is deflation, a decrease in the general price level of goods and services. The common measure of inflation is the inflation rate, the annualized percentage change in a general price index.

Changes in inflation are widely attributed to fluctuations in real demand for goods and services (also known as demand shocks, including changes in fiscal or monetary policy), changes in available supplies such as during energy crises (also known as supply shocks), or changes in inflation expectations, which may be self-fulfilling. Moderate inflation affects economies in both positive and negative ways. The negative effects would include an increase in the opportunity cost of holding money; uncertainty over future inflation, which may discourage investment and savings; and, if inflation were rapid enough, shortages of goods as consumers begin hoarding out of concern that prices will increase in the future. Positive effects include reducing unemployment due to nominal wage rigidity, allowing the central bank greater freedom in carrying out monetary policy, encouraging loans and investment instead of money hoarding, and avoiding the inefficiencies associated with deflation.

In economics, a recession is a business cycle contraction that occurs when there is a period of broad decline in economic activity. Recessions generally occur when there is a widespread drop in spending (an adverse demand shock). This may be triggered by various events, such as a financial crisis, an external trade shock, an adverse supply shock, the bursting of an economic bubble, or a large-scale anthropogenic or natural disaster (e.g. a pandemic). There is no official definition of a recession, according to the International Monetary Fund.

In the United States, a recession is defined as "a significant decline in economic activity spread across the market, lasting more than a few months, normally visible in real GDP, real income, employment, industrial production, and wholesale-retail sales." The European Union has adopted a similar definition. In the United Kingdom and Canada, a recession is defined as negative economic growth for two consecutive quarters.

Stagflation is the combination of high inflation, stagnant economic growth, and elevated unemployment. The term stagflation, a portmanteau of "stagnation" and "inflation", was popularized, and probably coined, by British politician Iain Macleod in the 1960s, during a period of economic distress in the United Kingdom. It gained broader recognition in the 1970s after a series of global economic shocks, particularly the 1973 oil crisis, which disrupted supply chains and led to rising prices and slowing growth. Stagflation challenges traditional economic theories, which suggest that inflation and unemployment are inversely related, as depicted by the Phillips Curve.

Stagflation presents a policy dilemma, as measures to curb inflation—such as tightening monetary policy—can exacerbate unemployment, while policies aimed at reducing unemployment may fuel inflation. In economic theory, there are two main explanations for stagflation: supply shocks, such as a sharp increase in oil prices, and misguided government policies that hinder industrial output while expanding the money supply too rapidly. The stagflation of the 1970s led to a reevaluation of Keynesian economic policies and contributed to the rise of alternative economic theories, including monetarism and supply-side economics.