CAIE A-Level Economics 4.3.10 AD/AS shifts vs movements
Practise separating movements along AD or AS from curve shifts, using labelled diagrams and changes in price level or conditions.
- Syllabus
- 2026–2028
- Course
- Economics 9708
- Level
- AS
Exam points
- distinguish a movement along AS from a shift using price level versus cost conditions
- explain with a labelled AD/AS diagram what causes a movement and what shifts the curve
4.3.10—AD/AS shifts vs movements question 1
[Maximum number: 8]
Explain, with the help of a diagram, the difference between what causes (i) a movement along an aggregate supply curve and (ii) a shift in an aggregate supply curve.
For correct diagram:
- axes correctly labelled: price level, GDP/real output (1 mark)
- AS/AD correctly labelled (1 mark) (KU: up to 2 marks)
- explanation of a movement along an AS curve (up to 3 marks)
- explanation of a shift in an AS curve (up to 3 marks) (APP up to 6 marks)
8
Movement along an AS curve:
- this is caused by a change in the price level; it could also be caused by a change in the AD curve and there is then a movement along an AS curve to restore the equilibrium position
Shift in an AS curve:
- this is caused by any reason other than a change in the price level, e.g. a change in the costs of factors of production, a change in the taxes on firms, a change in the productivity/quality of inputs or a change in the quantity of resources
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