COVID-19 has had a profound negative effect on many aspects of human life. While pharmacological solutions are being developed and implemented, the onus of mitigating the impact of the virus falls, in part, on individual citizens and their adherence to public health guidelines. However, promoting adherence to these guidelines has proven challenging. There is a pressing need to understand the factors that influence people's adherence to these guidelines in order to improve public compliance. To this end, the current study investigated whether people's perceptions of others' adherence predict their own adherence. We also investigated whether any influence of perceived social norms was mediated by perceptions of the moral wrongness of non-adherence, anticipated shame for non-adherence, or perceptions of disease severity. One hundred fifty-two Australians participated in our study between June 6, 2020 and August 21, 2020. Findings from this preliminary investigation suggest that (1) people match their behavior to perceived social norms, and (2) this is driven, at least in part, by people using others' behavior as a cue to the severity of disease threat. Such findings provide insight into the proximate and ultimate bases of norm-following behavior, and shed preliminary light on public health-related behavior in the context of a pandemic. Although further research is needed, the results of this study-which suggest that people use others' behavior as a cue to how serious the pandemic is and as a guide for their own behavior-could have important implications for public health organizations, social movements, and political leaders and the role they play in the fight against epidemics and pandemics.

Centre for Healthy Ageing Health Futures Institute Murdoch University Perth WA Australia

College of Science Health Engineering and Education Murdoch University Perth WA Australia

Department of Psychology University of Colorado Colorado Springs Colorado Springs CO United States

Faculty of Science Charles University Prague Czechia

Lyda Hill Institute for Human Resilience University of Colorado Colorado Springs Colorado Springs CO United States

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Ackerman J. M., Hill S. E., Murray D. R. (2018). The behavioral immune system: current concerns and future directions. Soc. Personal. Psychol. Compass 12:e12371. 10.1111/spc3.12371 DOI

Al-Shawaf L., Lewis D. M. G. (2013). Exposed intestines and contaminated cooks: sex, stress, & satiation predict disgust sensitivity. Pers. Individ. Diff. 54 698–702. 10.1016/j.paid.2012.11.016 DOI

Al-Shawaf L., Lewis D. M. G., Buss D. M. (2018). Sex differences in disgust: why are women more easily disgusted than men? Emot. Rev. 10 149–160. 10.1177/1754073917709940 DOI

Al-Shawaf L., Lewis D. M. G., Wehbe Y. S., Buss D. M. (2019). “Context, environment, and learning in evolutionary psychology,” in Encyclopedia of Evolutionary Psychological Science, eds Shackelford T. K., Weekes-Shackelford V. A. (New York: Springer International Publishing; ), 1–12. 10.1007/978-3-319-16999-6_227-1 DOI

Anderson R. M., Heesterbeek H., Klinkenberg D., Hollingsworth T. D. (2020). How will country-based mitigation measures influence the course of the COVID-19 epidemic? Lancet 395 931–934. 10.1016/S0140-6736(20)30567-5 PubMed DOI PMC

Australian Bureau of Statistics. (2020). Measuring the impacts of COVID-19, Mar-May 2020. URL: https://www.abs.gov.au/articles/measuring-impacts-covid-19-mar-may-2020

Bavel J. J. V., Baicker K., Boggio P. S., Capraro V., Cichocka A., Cikara M., et al. (2020). Using social and behavioural science to support COVID-19 pandemic response. Nat. Hum. Behav. 4 460–471. 10.1038/s41562-020-0884-z PubMed DOI

Block R., Berg A., Lennon R. P., Miller E. L., Nunez-Smith M. (2020). African American adherence to COVID-19 public health recommendations. Health Lit. Res. Pract. 4 e166–e170. 10.3928/24748307-20200707-01 PubMed DOI PMC

Bocian K., Wojciszke B. (2014). Self-interest bias in moral judgments of others’ actions. Personal. Soc. Psychol. Bull. 40 898–909. 10.1177/0146167214529800 PubMed DOI

Böhm R., Betsch C., Korn L. (2016). Selfish-rational non-vaccination: experimental evidence from an interactive vaccination game. J. Econ. Behav. Organ. 131 183–195. 10.1016/j.jebo.2015.11.008 DOI

Cheng H. Y., Jian S. W., Liu D. P., Ng T. C., Huang W. T., Lin H. H. (2020). Contact tracing assessment of COVID-19 transmission dynamics in Taiwan and risk at different exposure periods before and after symptom onset. JAMA Intern. Med. 180 1156–1163. 10.1001/jamainternmed.2020.2020 PubMed DOI PMC

Christakis N. A., Fowler J. H. (2013). Social contagion theory: examining dynamic social networks and human behavior. Stat. Med. 32 556–577. 10.1002/sim.5408 PubMed DOI PMC

Cialdini R. (2009). Influence. The Psychology of Persuasion (Rev.ed). New York: HarperCollins.

Cohen T., Wolf S., Panter A., Insko C. (2011). Introducing the GASP scale: a new measure of guilt and shame proneness. J. Personal. Soc. Psychol. 100 947–966. 10.1037/a0022641 PubMed DOI

Corpuz R., D’Alessandro S., Adeyemo J., Jankowski N., Kandalaft K. (2020). Life history orientation predicts COVID-19 precautions and projected behaviors. Front. Psychol 11:1857. 10.3389/fpsyg.2020.01857 PubMed DOI PMC

Csibra G., Gergely G. (2007). Social learning and social cognition: the role of pedagogy. Magyar Pszichologiai Szemle 62 5–30.

Del Giudice M., Belsky J. (2011). “The development of life history strategies: toward a multi-stage theory,” in The evolution of personality and individual differences, eds Buss D. M., Hawley P. H. (Oxford: Oxford University Press; ), 154–176. 10.1093/acprof:oso/9780195372090.003.0006 DOI

DeScioli P., Kurzban R. (2013). A solution to the mysteries of morality. Psychol. Bull. 139 477–496. 10.1037/a0029065 PubMed DOI

DeScioli P., Christner J., Kurzban R. (2011). The omission strategy. Psychol. Sci. 22 442–446. 10.1177/0956797611400616 PubMed DOI

Dickie R., Rasmussen S., Cain R., Williams L., Mackay W. (2018). The effects of perceived social norms on handwashing behaviour in students. Psychol. Health Med. 23 154–159. 10.1080/13548506.2017.1338736 PubMed DOI

Dinić B. M., Bodroža B. (2021). COVID-19 protective behaviors are forms of prosocial and unselfish behaviors. Front. Psychol. 12:647710. 10.3389/fpsyg.2021.647710 PubMed DOI PMC

Fritz M. S., Mackinnon D. P. (2007). Required sample size to detect the mediated effect. Psychol. Sci. 18 233–239. 10.1111/j.1467-9280.2007.01882.x PubMed DOI PMC

Gardner D. G., Cummings L. L., Dunham R. B., Pierce J. L. (1998). Single-item versus multiple-item measurement scales: an empirical comparison. Educ. Psychol. Meas. 58 898–915. 10.1177/0013164498058006003 DOI

Gelfand M. J., Jackson J. C., Pan X., Nau D., Pieper D., Denison E., et al. (2021). The relationship between cultural tightness-looseness and COVID-19 cases and deaths: a global analysis. Lancet Planet. Health 5 e135–e144. 10.1016/S2542-5196(20)30301-6 PubMed DOI PMC

Gilles I., Bangerter A., Clémence A., Green E. G. T., Krings F., Staerklé C., et al. (2011). Trust in medical organizations predicts pandemic (H1N1) 2009 vaccination behavior and perceived efficacy of protection measures in the Swiss public. Eur. J. Epidemiol. 26 203–210. 10.1007/s10654-011-9577-2 PubMed DOI

Greene J. D. (2001). An fMRI investigation of emotional engagement in moral judgment. Science 293 2105–2108. 10.1126/science.1062872 PubMed DOI

Guglielmo S. (2015). Moral judgment as information processing: an integrative review. Front. Psychol. 6:1637. 10.3389/fpsyg.2015.01637 PubMed DOI PMC

Habib H. (2020). Has Sweden’s controversial covid-19 strategy been successful? BMJ 369:m2376. 10.1136/bmj.m2376 PubMed DOI

Haslam S. A., Steffens N. K., Reicher S. D., Bentley S. V. (2021). Identity Leadership in a Crisis: a 5R Framework for Learning from Responses to COVID-19. Soc. Issues Policy Rev. 15 35–83. 10.1111/sipr.12075 PubMed DOI PMC

Hayes A. (2017). Introduction To Mediation, Moderation, And Conditional Process Analysis: A Regression Based Approach (2nd ed.). New York: Guilford Press.

Hayes A. F. (2009). Beyond Baron and Kenny: statistical mediation analysis in the new millennium. Commun. Monogr. 76 408–420. 10.1080/03637750903310360 DOI

Huff H. V., Singh A. (2020). Asymptomatic transmission during the coronavirus disease 2019 pandemic and implications for public health strategies. Clin. Infect. Dis. 71 2752–2756. 10.1093/cid/ciaa654 PubMed DOI PMC

Kang H. (2013). The prevention and handling of the missing data. Korean J. Anesthesiol. 64 402–406. 10.4097/kjae.2013.64.5.402 PubMed DOI PMC

Konstabel K., Lönnqvist J.-E., Leikas S., Velázquez R. G., Qin H., Verkasalo M., et al. (2017). Measuring single constructs by single items: constructing an even shorter version of the “Short Five” personality inventory. PLoS One 12:e0182714. 10.1371/journal.pone.0182714 PubMed DOI PMC

Krasnow M. M. (2017). An evolutionarily informed study of moral psychology. In Moral Psychology: A Multidisciplinary Guide, eds Voyer B., Tarantola T. (USA: Springer; ).

Larson R. B. (2019). Controlling social desirability bias. Int. J. Mark. Res. 61 534–547. 10.1177/1470785318805305 DOI

Lennon R. P., Sakya S. M., Miller E. L., Snyder B., Yaman T., Zgierska A. E., et al. (2020). Public intent to comply with COVID-19 public health recommendations. Health Lit. Res. Pract. 4 e161–e165. 10.3928/24748307-20200708-01 PubMed DOI PMC

Lewis D. M. G. (2015). Evolved individual differences: advancing a condition-dependent model of personality. Pers. Individ. Diff. 84 63–72. 10.1016/j.paid.2014.10.013 DOI

Lewis D. M. G., Al-Shawaf L., Buss D. M. (2020a). “Evolutionary personality psychology,” in The Cambridge Handbook of Personality Psychology, 2nd Edn, eds Corr P., Matthews G. (Cambridge: Cambridge University Press; ), 223–234. 10.1017/9781108264822.022 DOI

Lewis D. M. G., Al-Shawaf L., Conroy-Beam D., Asao K., Buss D. M. (2017). Evolutionary psychology: a how-to guide. Am. Psychol. 72 353–373. 10.1037/a0040409 PubMed DOI

Lewis D. M. G., Al-Shawaf L., Janiak M., Akunebu S. (2018). Integrating molecular genetics and evolutionary psychology: sexual jealousy and the androgen receptor (AR) gene. Pers. Individ. Diff. 120 276–282. 10.1016/j.paid.2016.11.021 DOI

Lewis D. M. G., Al-Shawaf L., Thompson M. B., Buss D. M. (2020b). “Evolved psychological mechanisms,” in SAGE Handbook of Evolutionary Psychology, ed. Shackelford T. K. (California: Sage; ), 96–119. 10.4135/9781529739442.n6 DOI

Loo R. (2002). A caveat on using single-item versus multiple-item scales. J. Manag. Psychol. 17 68–75. 10.1108/02683940210415933 DOI

Lu G., Razum O., Jahn A., Zhang Y., Sutton B., Sridhar D., et al. (2021). COVID-19 in Germany and China: mitigation versus elimination strategy. Glob. Health Action 14:1875601. 10.1080/16549716.2021.1875601 PubMed DOI PMC

Lukaszewski A. W., Lewis D. M. G., Durkee P. K., Sell A. N., Sznycer D., Buss D. M. (2020). An adaptationist framework for personality science. Eur. J. Personal. 34 1151–1174. 10.1002/per.2292 DOI

Luoto S., Varella A. C. (2021). Pandemic leadership: sex differences and their evolutionary-developmental origins. Front. Psychol. 12:633862. 10.3389/fpsyg.2021.633862 PubMed DOI PMC

Markowitz E. M., Shariff A. F. (2012). Climate change and moral judgement. Nat. Clim. Chang. 2 243–247. 10.1038/nclimate1378 DOI

Miller D. T., Prentice D. A. (1996). “The construction of social norms and standards,” in Social Psychology: Handbook Of Basic Principles, eds Higgins E. T., Kruglanski A. W. (New York: Guilford Press; ), 799–829.

Mitchell T., Dee D. L., Phares C. R., Lipman H. B., Gould L. H., Kutty P., et al. (2011). Non-pharmaceutical interventions during an outbreak of 2009 pandemic influenza a (H1N1) virus infection at a large public university, April-May 2009. Clin. Infect. Dis. 52 S138–S145. 10.1093/cid/ciq056 PubMed DOI

Navarrete C. D., Fessler D. M. T. (2006). Disease avoidance and ethnocentrism: the effects of disease vulnerability and disgust sensitivity on intergroup attitudes. Evol. Hum. Behav. 27 270–282. 10.1016/j.evolhumbehav.2005.12.001 DOI

Nezlek J. B., Wesselmann E. D., Wheeler L., Williams K. D. (2012). Ostracism in everyday life. Group Dyn. 16 91–104. 10.1037/a0028029 PubMed DOI

Ölcer S., Yilmaz-Aslan Y., Brzoska P. (2020). Lay perspectives on social distancing and other official recommendations and regulations in the time of COVID-19: a qualitative study of social media posts. BMC Public Health 20:963. 10.1186/s12889-020-09079-5 PubMed DOI PMC

Perreau De Pinninck A., Sierra C., Schorlemmer M. (2007). “Distributed norm enforcement via ostracism,” in Coordination, Organizations, Institutions, and Norms in Agent Systems III, eds Sichman J. S., Padget J., Ossowski S., Noriega P. (Berlin: Springer; ), 301–315. 10.1007/978-3-540-79003-7_22 DOI

Petersen E., Koopmans M., Go U., Hamer D. H., Petrosillo N., Castelli F., et al. (2020). Comparing SARS-CoV-2 with SARS-CoV and influenza pandemics. Lancet Infect. Dis. 20 e238–e244. 10.1016/S1473-3099(20)30484-9 PubMed DOI PMC

Pfattheicher S., Strauch C., Diefenbacher S., Schnuerch R. (2018). A field study on watching eyes and hand hygiene compliance in a public restroom. J. Appl. Soc. Psychol. 48 188–194. 10.1111/jasp.12501 DOI

Priesemann V., Brinkmann M. M., Ciesek S., Cuschieri S., Czypionka T., Giordano G., et al. (2021). Calling for pan-European commitment for rapid and sustained reduction in SARS-CoV-2 infections. Lancet 397 92–93. 10.1016/S0140-6736(20)32625-8 PubMed DOI PMC

Raza A., Raza I., Drake T. M., Sadar A. B., Adil M., Baluch F., et al. (2017). The efficiency, accuracy and acceptability of smartphone-delivered data collection in a low-resource setting – A prospective study. Int. J. Surg. 44 252–254. 10.1016/j.ijsu.2017.06.081 PubMed DOI

Robertson T. E., Delton A. W., Klein S. B., Cosmides L., Tooby J. (2014). Keeping the benefits of group cooperation: domain-specific responses to distinct causes of social exclusion. Evol. Hum. Behav. 35 472–480. 10.1016/j.evolhumbehav.2014.06.006 DOI

Robertson T. E., Sznycer D., Delton A. W., Tooby J., Cosmides L. (2018). The true trigger of shame: social devaluation is sufficient, wrongdoing is unnecessary. Evol. Hum. Behav. 39 566–573. 10.1016/j.evolhumbehav.2018.05.010 DOI

Rudert S. C., Ruf S., Greifeneder R. (2019). Whom to punish? How observers sanction norm-violating behavior in ostracism situations. Eur. J. Soc. Psychol. 50 376–391. 10.1002/ejsp.2606 DOI

Scott-Phillips T. C., Dickins T. E., West S. A. (2011). Evolutionary theory and the ultimate–proximate distinction in the human behavioral sciences. Perspect. Psychol. Sci. 6 38–47. 10.1177/1745691610393528 PubMed DOI

Seitz B. M., Aktipis A., Buss D. M., Alcock J., Bloom P., Gelfand M., et al. (2020). The pandemic exposes human nature: 10 evolutionary insights. Proc. Natl. Acad. Sci. U. S. A. 117 27767–27776. 10.1073/pnas.2009787117 PubMed DOI PMC

Shultz J. M., Baingana F., Neria Y. (2015). The 2014 ebola outbreak and mental health. J. Am. Med. Assoc. 313:567. 10.1001/jama.2014.17934 PubMed DOI

Spoor J., Williams K. (2007). “The evolution of an ostracism detection system,” in Evolution and the Social Mind, eds Forgas J. P., Haselton M. G., von Hippel W. (United Kingdom: Psychology Press; ), 279–292.

Steelfisher G. K., Blendon R. J., Ward J. R., Rapoport R., Kahn E. B., Kohl K. S. (2012). Public response to the 2009 influenza A H1N1 pandemic: a polling study in five countries. Lancet Infect. Dis. 12 845–850. 10.1016/s1473-3099(12)70206-2 PubMed DOI

Sznycer D. (2019). Forms and functions of the self-conscious emotions. Trends Cogn. Sci. 23 143–157. 10.1016/j.tics.2018.11.007 PubMed DOI

Sznycer D., Tooby J., Cosmides L., Porat R., Shalvi S., Halperin E. (2016). Shame closely tracks the threat of devaluation by others, even across cultures. Proc. Natl. Acad. Sci. U. S. A. 113 2625–2630. 10.1073/pnas.1514699113 PubMed DOI PMC

Sznycer D., Xygalatas D., Agey E., Alami S., An X.-F., Ananyeva K. I., et al. (2018). Cross-cultural invariances in the architecture of shame. Proc. Natl. Acad. Sci. U. S. A. 115 9702–9707. 10.1073/pnas.1805016115 PubMed DOI PMC

Taylor S. (2019). The Psychology Of Pandemics: Preparing For The Next Global Outbreak Of Infectious Disease. Cambridge: Cambridge Scholars Publishing.

Thornhill R., Fincher C. L. (2014). The parasite-stress theory of sociality, the behavioral immune system, and human social and cognitive uniqueness. Evol. Behav. Sci. 8 257–264. 10.1037/ebs0000020 DOI

Tindale L. C., Stockdale J. E., Coombe M., Garlock E. S., Lau W. Y. V., Saraswat M., et al. (2020). Evidence for transmission of COVID-19 prior to symptom onset. Elife 9:e57149. 10.7554/eLife.57149 PubMed DOI PMC

Tybur J. M., Inbar Y., Aarøe L., Barclay P., Barlow F. K., De Barra M., et al. (2016). Parasite stress and pathogen avoidance relate to distinct dimensions of political ideology across 30 nations. Proc. Natl. Acad. Sci. U. S. A. 113 12408–12413. 10.1073/pnas.1607398113 PubMed DOI PMC

van Leeuwen F., Petersen M. (2021). Pathogen avoidance and conformity: salient infectious disease does not increase conformity. PsyArXiv [preprint].

Varella M. A. C., Luoto S., Soares R. B. S., Valentova J. V. (2021). COVID-19 pandemic on fire: evolved propensities for nocturnal activities as a liability against epidemiological control. Front. Psychol. 12:646711. 10.3389/fpsyg.2021.646711 PubMed DOI PMC

Vygotsky L. S. (1978). Mind In Society: The Development Of Higher Psychological Processes. Cambridge: Harvard University Press.

Wang W., Wu Q., Yang J., Dong K., Chen X., Bai X., et al. (2020). Global, regional, and national estimates of target population sizes for COVID-19 vaccination: descriptive study. BMJ 371:m4704. 10.1136/bmj.m4704 PubMed DOI PMC

Wesselmann E. D., Nairne J. S., Williams K. D. (2012). An evolutionary social psychological approach to studying the effects of ostracism. J. Soc. Evol. Cult. Psychol. 6 309–328. 10.1037/h0099249 DOI

Williams K. D. (2007). Ostracism: the kiss of social death. Soc. Personal. Psychol. Compass 1 236–247. 10.1111/j.1751-9004.2007.00004.x DOI

Williams K. D., Shore W. J., Grahe J. E. (1998). The silent treatment: perceptions of its behaviors and associated feelings. Group Process. Intergroup Relat. 1 117–141. 10.1177/1368430298012002 DOI

Wilson S. (2020). Pandemic leadership: lessons from New Zealand’s approach to COVID-19. Leadership 16 279–293. 10.1177/1742715020929151 DOI

World Health Organization [WHO]. (2020a). WHO Director-General’s Opening Remarks at the Media Briefing on COVID-19 - 11 March 2020. URL: https://www.who.int/dg/speeches/detail/who-director-general-s-opening-remarks-at-the-media-briefing-on-covid-19—11-march-2020

World Health Organization [WHO]. (2020b). WHO Coronavirus Disease (COVID-19) dashboard. URL: https://covid19.who.int/

World Health Organization [WHO]. (2020c). Q&A on Coronavirus (COVID-19). URL: https://www.who.int/emergencies/diseases/novel-coronavirus-2019/question-and-answers-hub/q-a-detail/q-a-coronaviruses

World Health Organization [WHO]. (2020d). Coronavirus Disease (Covid-19) Advice For The Public. URL: https://www.who.int/emergencies/diseases/novel-coronavirus-2019/advice-for-public#:∼:text=If COVID-19 is spreading, a bent elbow or tissue

World Health Organization Writing Group. (2012). Nonpharmaceutical interventions for pandemic influenza, national and community measures. Emerg. Infect. Dis. 12 88–94. 10.3201/eid1201.051371 PubMed DOI PMC

Xu S., Li Y. (2020). Beware of the second wave of COVID-19. Lancet 395 1321–1322. 10.1016/S0140-6736(20)30845-X PubMed DOI PMC

Yarkoni T. (2010). The abbreviation of ersonality, or how to measure 200 Personality Scales with 200 items. J. Res. Personal. 44 180–198. 10.1016/j.jrp.2010.01.002 PubMed DOI PMC

Yong J. C., Choy B. K. C. (2021). Noncompliance with safety guidelines as a free-riding strategy: an evolutionary game-theoretic approach to cooperation during the COVID-19 pandemic. Front. Psychol. 12:646892. 10.3389/fpsyg.2021.646892 PubMed DOI PMC