All other things being equal, an outward shift in the aggregate demand curve from AD1 AD_1\,AD1 to AD2 AD_2\,AD2 could have been caused by a fall in:
the budget deficit.
the rate of interest.
labor productivity.
world commodity prices.
222 exam-style questions on AQA A Level Economics 2.2 How the macroeconomy works: the circular flow of income, aggregate demand/aggregate supply analysis and related concepts, covering 2.2.1 The circular flow of income, 2.2.2 Aggregate demand and aggregate supply analysis, 2.2.3 The determinants of aggregate demand, 2.2.4 Aggregate demand and the level of economic activity, 2.2.5 Determinants of short-run aggregate supply, and 2.2.6 Determinants of long-run aggregate supply. Each one has a worked solution and a mark scheme showing where the marks go.