What the investigation does
The essay models a hypothetical 10% tax through a sequence of economic links: tax pass-through, price elasticity, consumption, obesity-related costs and the NHS budget. When contemporaneous Danish and Hungarian results were unavailable, it used published models, researcher interviews and a twenty-person questionnaire. This makes the work an explicitly conditional policy model rather than an evaluation of an observed British tax.
Its central calculation combines an elasticity estimate of -0.56 with 81% tax pass-through to estimate a 4.5% consumption reduction. Conflicting research then produces a range of possible healthcare savings rather than a single answer. The evaluation identifies substitution, product reformulation, income differences, sample limitations and longer-term costs as reasons that the estimates may not hold.
Why this example is worth reading
Breaks a broad policy question into intermediate mechanisms so the reader can inspect each inferential step.
Distinguishes a tax rate from the price increase consumers actually face through an explicit pass-through assumption.
Uses disagreement between research sources to develop a conditional range and evaluates the policy's distributional effects.
What to examine critically
The numerical outcome depends on transferring several estimates across contexts and on simplified links between consumption, health outcomes and costs.
A twenty-person questionnaire cannot represent Britain; the model's percentages and monetary values should be read as the student's historical estimates, not established policy effects.
Apply it to your own work
Make an assumption chain visible and explain how uncertainty can grow between its stages.
Separate the evidence for a behavioural response from the evidence for its ultimate policy outcome.
Test the effect on different groups and consider alternative policies before reaching a recommendation.
Essay & assessment material
Read the original material alongside the breakdown, or download it to keep.
The examiner mark sheet on PDF p. 3 records 33/36 under the historical rubric. No separate narrative examiner commentary is supplied. The policy estimates belong to this 2013 essay and are not current healthcare forecasts.
Source & assessment context
Economics English exemplars, May 2013. The source PDFs retain their original attribution. The analysis on this page is AsterDraft’s independent teaching commentary.
Examiner mark: 33/36 (legacy criteria). The examiner mark sheet on PDF p. 3 records 33/36 under the historical rubric. No separate narrative examiner commentary is supplied. The policy estimates belong to this 2013 essay and are not current healthcare forecasts.