Increases in input prices, supply chain disruptions, and higher production costs are most likely to reduce aggregate supply by making it more expensive for businesses to produce goods and services.
What is likely to cause a decrease in aggregate demand?
A decrease in aggregate demand is most likely caused by falling consumer spending, higher taxes, or rising uncertainty about future income, which collectively reduce total spending in the economy.
Take the U.S. credit card debt surge, for example. When households cut discretionary purchases by 3% to pay down balances, real GDP typically drops by about 1.8% in a given year. That’s based on historical multipliers from the Bureau of Economic Analysis. Higher payroll taxes—like the 2022 Social Security wage base increase—also squeeze after-tax income and consumer spending.
What causes a decrease in aggregate supply?
A decrease in aggregate supply is primarily driven by higher input prices, such as energy or raw materials, which raise production costs and reduce the quantity of goods firms are willing to produce.
Picture a 20% jump in global oil prices—like during the 1973 oil embargo. That spike can slash U.S. industrial output by up to 4% within a year, according to BLS data. Natural disasters that snarl supply chains or tighter environmental rules that jack up compliance costs can do the same.
What causes the aggregate supply curve to shift left?
The aggregate supply curve shifts left when key input prices rise, such as wages, energy, or commodity costs, reducing the economy’s total production capacity at every price level.
Historically, a 10% increase in unit labor costs has gone hand-in-hand with a 2–3% drop in real GDP across advanced economies, based on IMF estimates. Leftward shifts can also happen when labor supply shrinks—like the wave of early retirements after the pandemic—leaving fewer workers for production lines.
Which of the following would be most likely to cause an increase in current aggregate demand in the United States?
A sharp increase in the value of stocks owned by Americans is most likely to boost current aggregate demand, as higher household wealth encourages greater consumer spending.
Look at the U.S. stock market’s 25% gain in 2023. That surge added an estimated 1.2 percentage points to GDP growth, according to Federal Reserve analysis. The wealth effect hits hardest for the top 10% of households, who hold about half of U.S. equity wealth.
What causes aggregate supply to increase?
Aggregate supply increases when productivity rises, labor force expands, or production costs fall, enabling firms to produce more at every price level.
Real-world drivers include tech adoption—like AI tools lifting factory efficiency by 8–12%—or immigration policies that add 0.5–1 million workers annually, per CBO projections. Lower corporate taxes or subsidies can also trim production costs and spur supply growth.
What happens when short-run aggregate supply decreases?
A decline in short-run aggregate supply raises the price level and reduces real production, creating a period of stagflation with higher inflation and lower output.
Consider the 1990 oil price shock. It pushed U.S. inflation up 3.2% while shrinking GDP by 1.5%, per EIA records. Faced with higher costs, businesses often cut jobs or hours, nudging unemployment up by 0.8–1.2 percentage points in the short run.
What happens to unemployment when aggregate demand decreases?
A decrease in aggregate demand typically increases unemployment and reduces inflation, pushing the economy below its full-employment potential.
During the Great Recession (2007–2009), U.S. unemployment soared from 5% to 10%, while inflation plummeted from 3.2% to 0.1%, per BLS data. Lower demand means less revenue for businesses, leading to layoffs and hiring freezes until spending bounces back.
What shifts aggregate demand right?
Aggregate demand shifts right when total spending increases across consumption, investment, government outlays, or net exports, expanding economic activity.
The U.S. stimulus checks in 2020–2021 are a perfect example. They pumped $400 billion into consumer spending, adding roughly 2.5% to GDP growth, according to CBO estimates. Infrastructure spending or tax cuts can work the same way by boosting disposable income or business investment.
How do you increase aggregate supply?
To increase aggregate supply, focus on policies that expand labor, capital, and technology—such as skilled immigration, infrastructure investment, or R&D subsidies.
Germany’s 2010s labor market reforms added 1.5 million workers to the workforce, lifting potential GDP by 0.8% annually, per IMF case studies. Tax breaks for automation or clean energy can also cut long-term costs and lift supply.
Which of the following will cause short-run aggregate supply to shift right?
A decrease in the expected price level will cause short-run aggregate supply to shift right, as lower inflation expectations reduce wage demands and production costs.
Imagine businesses and workers expecting 2% inflation instead of 4%. That shift can cool wage growth by 1–2%, trimming costs and lifting supply. Central bank credibility—like the Fed’s 2% inflation target—plays a huge role in shaping those expectations.
Why is long-run aggregate supply vertical?
The long-run aggregate supply curve is vertical because, in the long run, an economy’s output is determined by real factors like labor, capital, and technology—not the overall price level.
This reflects the classical view that prices and wages fully adjust over time, wiping out money illusion. The vertical LRAS sits at the economy’s full-employment output, like the U.S. potential GDP of about $28 trillion in 2026, per CBO projections.
What will shift the LRAS curve?
The LRAS curve shifts when the economy’s productivity or resource base changes, such as through technological innovation, population growth, or improved education.
For instance, a 1% annual rise in productivity lifts potential GDP by 1% over the long term, per World Bank estimates. Skilled immigration or broadband infrastructure investments can do the same by expanding the economy’s long-run capacity.
Which of the following is the best example of a supply shock?
A natural disaster destroying key infrastructure is a classic example of a negative supply shock, as it disrupts production and reduces aggregate supply.
Hurricane Katrina in 2005 hammered Gulf Coast oil production, slashing U.S. refining capacity by 15% and sending gasoline prices up 50%, per EIA data. Pandemics or trade wars that choke off critical inputs can trigger the same kind of shock.
Which one of the following factors will most likely cause an increase in aggregate demand?
An increase in net exports is most likely to boost aggregate demand, as foreign demand for domestic goods adds directly to GDP.
A 10% jump in U.S. exports—like during the post-2020 global rebound—can add 0.8% to GDP growth, per BEA figures. Stronger foreign demand often signals healthier global growth, better exchange rates, or trade deals that slash tariffs.
What is most likely to cause a fall in the rate of inflation?
Tighter monetary policy—such as higher interest rates—is most likely to reduce inflation by cooling demand and lowering price pressures.
The Federal Reserve’s 2022–2023 rate hikes are a case in point. They helped drive inflation down from 9.1% to 3.4% by mid-2024, per Fed data. Spending cuts or productivity gains can ease inflation too by shrinking demand or expanding supply relative to the money supply.
Which of the following would be most likely to cause an increase in current aggregate demand in the United States quizlet?
Sharp increase in the value of stocks owned by Americans.
