Nudges for COVID-19 voluntary vaccination : How to explain peer information?

Sasaki, Shusaku; Saito, Tomoya; Ohtake, Fumio

Nudges for COVID-19 voluntary vaccination : How to explain peer information?

Sasaki, Shusaku; Saito, Tomoya; Ohtake, Fumio

Discussion Papers In Economics And Business, 2021, 21-07, 1-26

アクセス数:518件（2025-10-08 10:30 集計）

固定URL: https://hdl.handle.net/11094/81851

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タイトル	Nudges for COVID-19 voluntary vaccination : How to explain peer information?
著者	NRID 1000020814586 1000020814586 researchmap permalink ssasaki_econ ssasaki_econ 著者名 Sasaki, Shusaku
	NRID 1000080327501 1000080327501 著者名 Saito, Tomoya
	NRID 1000050176913 1000050176913 ORCID 0000-0002-8825-7446 0000-0002-8825-7446 researchmap permalink ohtake ohtake Scopus Author ID 6701666319 6701666319 著者名 Ohtake, Fumio
キーワード等	Herd immunity
	Behavioral public policy
	Nudge
	Framing effect
	Autonomy
抄録	Promoting vaccination is a crucial strategy to end the COVID-19 pandemic; however, individual autonomy should be respected at the same time. This study aimed to discover behavioral economics nudges that can reinforce people’s intention to receive the COVID-19 vaccine without impeding their autonomous decision-making. In March 2021, we conducted a pre-registered, online experiment with 1,595 Japanese nationwide sample, and randomly assigned them to one of a control group and three treatment groups that provided the following other-regarding messages: Message A (“X out of 10 people in your age group answered they would receive this vaccine”), Message B (“Your vaccination behavior can encourage the vaccination behavior of the people around you”), or Message C (“If you do not receive the vaccine, the people around you also may not do so”). By comparing the messages’ effects on vaccination intention, autonomous decisionmaking, and emotional burden, we found that Message B was effective in increasing the number of older adults who newly decided to receive the vaccine. Messages A and C further reinforced the intention of older adults who had already planned to receive it. However, Message C, which conveys similar information to Message B with loss-framing, increased viewers’ emotional burden. These three messages had no promoting effect for young adults with lower vaccination intentions at baseline. Based on the above findings, we propose that governments should use different messages depending on their purposes and targets, such as Message A instead of Message C, to encourage voluntary vaccination behavior.
出版者	Graduate School of Economics, Osaka University
収録物名	Discussion Papers In Economics And Business
巻(号)	21-07
ページ	1-26
刊行年月	2021-06
言語	英語
ハンドルURL	https://hdl.handle.net/11094/81851
NCID	AA1160366X
関連情報 (references)	URI http://www2.econ.osaka-u.ac.jp/econ_society/dp/2107.pdf
アクセス権	metadata only access
カテゴリ	ディスカッション／ワーキング・ペーパー DP/WP
カテゴリ	Discussion Papers In Economics And Business

資源タイプ	テクニカルレポート
ローカル資源タイプ	ディスカッション／ワーキング・ペーパー
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Discussion Papers In Economics And Business. 2021, 21-07, p. 1-26
DC.title	Nudges for COVID-19 voluntary vaccination : How to explain peer information?
DC.creator	Sasaki, Shusaku
	Saito, Tomoya
	Ohtake, Fumio
DC.publisher	Graduate School of Economics, Osaka University
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2021-06
DC.relation' scheme='DCTERMS.URI	http://www2.econ.osaka-u.ac.jp/econ_society/dp/2107.pdf
DC.subject	Herd immunity
	Behavioral public policy
	Nudge
	Framing effect
	Autonomy
DCTERMS.abstract	Promoting vaccination is a crucial strategy to end the COVID-19 pandemic; however, individual autonomy should be respected at the same time. This study aimed to discover behavioral economics nudges that can reinforce people’s intention to receive the COVID-19 vaccine without impeding their autonomous decision-making. In March 2021, we conducted a pre-registered, online experiment with 1,595 Japanese nationwide sample, and randomly assigned them to one of a control group and three treatment groups that provided the following other-regarding messages: Message A (“X out of 10 people in your age group answered they would receive this vaccine”), Message B (“Your vaccination behavior can encourage the vaccination behavior of the people around you”), or Message C (“If you do not receive the vaccine, the people around you also may not do so”). By comparing the messages’ effects on vaccination intention, autonomous decisionmaking, and emotional burden, we found that Message B was effective in increasing the number of older adults who newly decided to receive the vaccine. Messages A and C further reinforced the intention of older adults who had already planned to receive it. However, Message C, which conveys similar information to Message B with loss-framing, increased viewers’ emotional burden. These three messages had no promoting effect for young adults with lower vaccination intentions at baseline. Based on the above findings, we propose that governments should use different messages depending on their purposes and targets, such as Message A instead of Message C, to encourage voluntary vaccination behavior.
DC.format	81851
citation_title	Nudges for COVID-19 voluntary vaccination : How to explain peer information?
citation_author	Sasaki, Shusaku
	Saito, Tomoya
	Ohtake, Fumio
citation_publisher	Graduate School of Economics, Osaka University
citation_language	英語
citation_date	2021-06
citation_journal_title	Discussion Papers In Economics And Business
citation_volume	21-07
citation_firstpage	1
citation_lastpage	26
citation_public_url	https://hdl.handle.net/11094/81851
citation_abstract_html_url	http://www2.econ.osaka-u.ac.jp/econ_society/dp/2107.pdf

Nudges for COVID-19 voluntary vaccination : How to explain peer information?

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