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Framing and signalling effects of taxes on sugary drinks: a discrete choice experiment among households in Great Britain

Cornelsen, Laura, Quaife, Matthew, Lagarde, Mylene and Smith, Richard D. (2020) Framing and signalling effects of taxes on sugary drinks: a discrete choice experiment among households in Great Britain. Health Economics (United Kingdom), 29 (10). pp. 1132-1147. ISSN 1057-9230

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Identification Number: 10.1002/hec.4123

Abstract

Taxes on sugar-sweetened beverages (SSBs) are in place in many countries to combat obesity with emerging evidence that these are effective in reducing purchases of SSBs. In this study, we tested whether signalling and framing the price increase from an SSB tax explicitly as a health-related, earmarked measure reduces the demand for SSBs more than an equivalent price increase. We measured the demand for non-alcoholic beverages with a discrete choice experiment (DCE) administered online to a randomly selected group of n = 603 households with children in Great Britain (GB) who regularly purchase SSBs. We find a suggestive evidence that a price increase leads to a larger reduction in the probability of choosing SSBs when it is signalled as a tax and framed as a health-related and earmarked policy. Respondents who did not support a tax on SSBs, who were also more likely to choose SSBs in the first place, were on average more responsive to a price increase framed as an earmarked tax than those who supported the tax. The predictive validity of the DCE, to capture preferences for beverages, was confirmed using actual purchase data. The findings imply that a well-signalled and earmarked tax on SSBs could improve its effectiveness at reducing the demand.

Item Type: Article
Official URL: https://onlinelibrary.wiley.com/journal/10991050
Additional Information: © 2020 The Authors
Divisions: Health Policy
Subjects: R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine
H Social Sciences > HJ Public Finance
Date Deposited: 23 Jul 2020 12:30
Last Modified: 20 Oct 2020 06:06
URI: http://eprints.lse.ac.uk/id/eprint/105777

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