If consumers the amount of spending, the aggregate demand curve shifts to the left.

If consumers decrease the amount of spending, the aggregate demand curve shifts to the left. Here's why:

1. Aggregate demand is the total demand for all goods and services in an economy. It's represented by the aggregate demand curve, which shows the relationship between the price level and the quantity of output that firms are willing and able to supply.

2. The aggregate demand curve is downward sloping, meaning that as the price level falls, the quantity of output demanded rises. Conversely, as the price level rises, the quantity of output demanded falls.

3. When consumers decrease their spending, they are effectively reducing the quantity of goods and services they are willing and able to buy at a given price level. This means that at every price level, the quantity of output demanded is lower than before.

4. This decrease in demand is represented by a leftward shift of the aggregate demand curve. This means that at every price level, the quantity of output demanded is now lower than before.

5. Therefore, when consumers decrease their spending, the aggregate demand curve shifts to the left.