Aggregate Demand
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AP Macroeconomics › Aggregate Demand
Based on the aggregate demand curve shown, households become more pessimistic about future income, reducing current consumption spending. In the short run, which option correctly identifies the determinant causing the shift and the direction shown in the graph?
AD shifts left from AD1 to AD2 due to lower consumer spending from worse expectations.
There is a movement down along AD1 due to lower consumer spending from worse expectations.
AD shifts right from AD1 to AD2 due to lower consumer spending from worse expectations.
AD shifts left from AD1 to AD2 due to higher resource prices that reduce output.
There is a movement up along AD1 due to a higher price level lowering real spending.
Explanation
Aggregate demand (AD) measures the total demand for goods and services across the economy, composed of consumption (C), investment (I), government spending (G), and net exports (NX). In the graph, pessimism about future income reduces current C, shifting AD left from AD1 to AD2 as households spend less. This leftward shift correctly identifies the determinant (consumer expectations affecting C) and direction. Unlike a movement along AD, which stems from price level changes, this is a full curve shift. A common error is conflating price level (PL), a point-in-time value, with inflation, the ongoing rise in PL. To transfer this knowledge, always list AD elements: C (influenced by confidence), I (business outlook), G (policy), NX (global factors) for systematic analysis.