Which is a possible time-lag problem with supply side policy?
Interest rates change too quickly
Imports are counted immediately
Taxes can never be changed
Training may take years to raise workers' productivity
121 exam-style questions on OCR GCSE Economics 3.7 Supply side policies, covering 3.7.1 What are supply side policies and 3.7.2 Costs and benefits of supply side policies. Each one has a worked solution and a mark scheme showing where the marks go.