a change in aggregate demand that leads to an inflationary gap is shift.

An inflationary gap occurs when the actual output of an economy is above its potential output. This can lead to inflation as there is excess demand for goods and services, pushing prices higher.

A change in aggregate demand that leads to an inflationary gap is a shift in the aggregate demand curve to the right. This shift can be caused by various factors such as an increase in government spending, a decrease in taxes, or an increase in consumption or investment. When aggregate demand increases, it puts pressure on firms to produce more goods and services to meet the higher demand. If the firms cannot meet the demand, prices will rise, leading to inflation.

To address an inflationary gap, the government can use monetary or fiscal policy to decrease aggregate demand, such as increasing interest rates or reducing government spending. This will reduce demand and stabilize prices.

A change in aggregate demand that leads to an inflationary gap is referred to as a shift. To better understand this concept, let's break it down step by step:

Step 1: Understanding Aggregate Demand
Aggregate demand represents the total demand for goods and services in an economy at a given price level during a specific time period. It consists of four components: consumption (C), investment (I), government spending (G), and net exports (NX).

Step 2: Identifying an Inflationary Gap
An inflationary gap occurs when the actual level of real GDP exceeds the potential GDP of an economy, leading to rising inflationary pressures. This situation indicates that the economy is producing beyond its sustainable capacity.

Step 3: Examining the Impact of a Change in Aggregate Demand
When the level of aggregate demand increases, it can lead to a shift in the aggregate demand curve. This shift can occur due to various factors, such as an increase in consumer confidence, expansionary fiscal or monetary policies, or higher levels of export demand.

Step 4: Analyzing the Effects of the Shift
If the change in aggregate demand leads to an increase in overall spending in the economy, it can cause real GDP to exceed potential GDP, resulting in an inflationary gap. This occurs because the increased demand leads to upward pressure on prices as producers struggle to meet the higher level of spending.

Step 5: Managing an Inflationary Gap
To address an inflationary gap, policymakers can implement contractionary fiscal or monetary policies. These measures aim to reduce aggregate demand and bring it back in line with potential GDP. Examples include reducing government spending, increasing taxes, or raising interest rates.

In conclusion, a change in aggregate demand that leads to an inflationary gap is called a shift. This shift occurs when an increase in aggregate demand surpasses an economy's potential GDP, causing inflationary pressures.