Interpersonal distancing preferences, touch behaviors to strangers, and country-level early dynamics of SARS-CoV-2 spread.

The recent Coronavirus Disease 2019 (COVID-19) pandemic has led to "social distancing" recommendations from public health organizations, as physical closeness bears the risk of person-to-person Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) transmission. Here, it was explored if interpersonal distance preferences and touch behaviors in 41 countries were valid measures of physical distancing in contacts between strangers and whether they related to country-level variation in early dynamics of SARS-CoV-2 spread. The analysis, based on aggregated data from more than 9,000 participants, showed that variation in early dynamics of SARS-CoV-2 spread (i.e., total number of SARS-CoV-2 cases 20 days after the 100th case) was significantly and positively related to nonaffective touch behaviors between strangers, and significantly and negatively related to the preferred interpersonal distance between strangers. These findings suggest that the two measures are suitable for monitoring the extent to which recommendations on physical distance are implemented at the country-level in the context of COVID 19 outbreak. Further, they confirm that "physical distancing" is related to the dynamics of the COVID-19 pandemic. It seems that an adaptation of social behaviors-that is, strict physical distancing from strangers-may result in a lower SARS-CoV-2 transmission rate. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

The Impact of the Covid-19 Pandemic on Disgust Sensitivity.

There have been few tests of whether exposure to naturalistic or experimental disease-threat inductions alter disgust sensitivity, although it has been hypothesized that this should occur as part of disgust's disease avoidance function. In the current study, we asked Macquarie university students to complete measures of disgust sensitivity, perceived vulnerability to disease (PVD), hand hygiene behavior and impulsivity, during Australia's Covid-19 pandemic self-quarantine (lockdown) period, in March/April 2020. These data were then compared to earlier Macquarie university, and other local, and overseas student cohorts, to determine if disgust sensitivity and the other measures, were different in the lockdown sample. The most consistent finding in the lockdown sample was of higher core disgust sensitivity (Cohen's d = 0.4), with some evidence of greater germ aversion on the PVD, and an increase in hand and food-related hygiene, but with little change in impulsivity. The consistency with which greater core disgust sensitivity was observed, suggests exposure to a highly naturalistic disease threat is a plausible cause. Greater disgust sensitivity may have several functional benefits (e.g., hand and food-related hygiene) and may arise implicitly from the threat posed by the Covid-19 pandemic.