Department of Social, Economic and Environmental Psychology, University of Koblenz-Landau, Landau, Germany.
PLoS One. 2022 Sep 7;17(9):e0273441. doi: 10.1371/journal.pone.0273441. eCollection 2022.
Vaccine shortage is still a major problem in many countries. But how does the vaccine shortage affect people's willingness to be vaccinated? To test whether perceived scarcity of SARS-CoV-2 vaccines has an impact on vaccination willingness, a preregistered online experiment with N = 175 non-vaccinated German participants was conducted during a period of national vaccine shortage. Perceived vaccine scarcity was manipulated by either telling participants that SARS-CoV-2 vaccines in their district would be particularly scarce in the upcoming weeks or that above-average quantities would be available. The results show that individuals in the scarcity-condition were significantly more willing to get vaccinated than those in the surplus-condition. In addition, individuals in the scarcity-condition were found to express more anger towards the debate on relaxations for vaccinated versus non-vaccinated individuals. The results indicate that even superficial processes such as a perception of scarcity can influence people's willingness to get vaccinated.
疫苗短缺仍然是许多国家的一个主要问题。但是，疫苗短缺如何影响人们接种疫苗的意愿呢？为了测试人们对 SARS-CoV-2 疫苗的短缺是否会影响接种意愿，在全国疫苗短缺期间，对 175 名未接种疫苗的德国参与者进行了一项预先注册的在线实验。通过告诉参与者他们所在地区即将到来的几周内 SARS-CoV-2 疫苗将特别短缺，或者说供应数量将高于平均水平，来操纵对疫苗短缺的感知。结果表明，在短缺条件下的个体比在过剩条件下的个体更愿意接种疫苗。此外，还发现短缺条件下的个体对疫苗接种者和未接种者放松限制的辩论表现出更多的愤怒。研究结果表明，即使是表面上的过程，如对短缺的感知，也会影响人们接种疫苗的意愿。
