People who have had COVID-19 may be more sociable than those who have not had it; people who have had COVID-19 were more conservative-leaning

Personality Correlates of COVID-19 Infection Proclivity: Extraversion Kills. Vania Rolon et al. Personality and Individual Differences, May 14 2021, 110994. https://doi.org/10.1016/j.paid.2021.110994

Highlights

• People who have had COVID-19 may be more sociable than those who have not had it.

• Assertiveness and energy level showed no group differences.

• People who have had COVID-19 were more conservative-leaning.

• Group differences in political ideology pertained social conservatism in particular.

Abstract: The current research sought to shed light on the behavioral science that underlies the spread of SARS-CoV-2. We tested the extraversion hypothesis, which suggests that the sociability facet of extraversion may predispose people to becoming infected with the coronavirus via greater human-to-human contact. Since extraverts seek out social opportunities and seem less likely to follow containment measures related to social distancing, we hypothesized that people who have previously become infected would exhibit greater extraversion than would those who have not contracted the virus. We measured overall extraversion and three of its facets–sociability, assertiveness, and energy levels–as well as political orientation. We collected data from 217 adults, aged 40 and older, from the US and the UK, of whom 53 had had the virus at some point prior to the study, and 164 had not. Participants who had had COVID-19 were more dispositionally sociable and were also more conservative-leaning compared to participants who had never had COVID-19. Implications regarding the behavioral science underlying the current pandemic are discussed.

Keywords: COVID-19PersonalityExtraversionBFI-2

4. Discussion

The current research sought to add to the efforts to understand the COVID-19 pandemic by exploring the behavioral science surrounding the spread of SARS-CoV-2. People who contracted COVID-19 reported marginally greater sociability scores than did people who never contracted COVID-19, whereas differences in overall extraversion, assertiveness, and energy level did not differ significantly between groups. In terms of political orientation, exploratory analyses suggest that participants who had been infected with SARS-CoV-2 leaned relatively more conservative, especially regarding social issues, and, in the case of American participants, and potentially agreed more with the Republican Party than did participants who had never been infected.

4.1. Limitations and Future Research

While our sample size may not have been ideal, we believe our study to be a first step into looking at personality differences between people who have become infected with COVID-19 versus those who have not, especially since past research has mostly focused on personality traits and COVID-19 related measures (e.g., perceived susceptibility and obedience of contingency measures) but not actual infections. Larger samples with more evenly distributed techniques would benefit future work. Additionally, collecting data from a broader array of nations would be useful, particularly since the American and British left-right parties may differ from the left-right parties of other nations. While Pennycook (2020) explains how the U.S. right politicized the pandemic, in Mexico, for example, it was President Lopez Obrador’s left government making claims about the country having tamed COVID-19 or that facemasks have practically null utility (Loret de Mola, 2021).

Future research might be wise to test specific models that can provide a broader frame for the relationship between extraversion and COVID-19, perhaps by incorporating other similarly related variables such as risk aversion and disgust sensitivity. For instance, the balancing-selection model (see Nettle, 2006) argues that traits with heritable components that show high degrees of variability might have been selected because both high and low ends of such traits might have benefits and costs from an evolutionary perspective. High extraversion may provide increased social status, but also greater fitness-related costs in the form of more risk-taking behavior. Perhaps across many generations of human life, pandemics that thrive on people interacting with others wipe out sociable extraverts disproportionately.

The directionality of the extraversion-COVID-19 relationship also merits further research. Are extraverts more likely to get infected; can the virus impact hosts’ social behavior; or both? The nervous-system hijacking model (see Reiber et al., 2010; Seitz et al., 2020) suggests viruses may temporarily increase sociable activities in hosts to benefit their spread and replication. Given organisms like toxoplasma gondii can alter our behavior (da Silva and Langoni, 2009), and that SARS-CoV-2 shows up in neural tissue (Mao et al., 2020) and in spinal fluid (Wu et al., 2020) in severe cases–suggesting the virus is making contact with the nervous system in some way–the possibility of viruses affecting human host behavior should not go unresearched.

4.2. Conclusion

Because the SARS-CoV-2 spreads via human-to-human contact, the pandemic is largely an issue of human social behavior. We documented two important personality-based variables that potentially significantly relate to the spread of the virus: the sociability facet of extraversion and self-identified conservative tendencies. We hope that these findings can help inform policy and processes moving forward as we work together as a global community to stop this pandemic in its tracks and get back to life as we knew it.