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Psychiatry Investig > Volume 17(7); 2020 > Article
Khosravi: Neuroticism as a Marker of Vulnerability to COVID-19 Infection
Serious health threats might be imposed on the members of societies affected by Large-scale public health emergencies, particularly the COVID-19 pandemic. Generally, humans show negative responses to such threats, which may result in less psychological well-being and psychopathology [1]. Journalists and policy-makers usually put an emphasis on the role of sociodemographic factors for the identification and support of at-risk people (e.g., living alone, elderly). However, previous research has indicated that personality differences would lead to the overprediction of psychological well-being beyond these facets [2]. Accordingly, it is vitally needed to incorporate personality for the identification of at-risk people.
Individual differences in personality during the COVID-19 pandemic play a key role in adopting the protective behaviors and modulating the relationship between the immune system and stressors. In other word, the subjects’ risk perception of a pandemic, immunity, and progression of health problems are highly affected by stable individual differences, including personality traits [3,4]. However, few studies have been devoted to examine the role of personality traits in predicting virus-mitigating behaviors [5]. In this letter, i have researched scarce investigative resources in this context to complete measures of association between neuroticism personality trait and the vulnerability to COVID-19 infection.
Neuroticism, known as one of the Big Five personality traits, represents the tendency of individuals towards experiencing negative emotions, including depression, anxiety, and anger. Individuals with high neuroticism scores perceive the world to be threatening, they are quickly distressed, and it is difficult for them to cope with stressful situations [3]. This argument has been supported by studies on neuroticism mechanisms, which have highlighted the critical role of affective reactivity and preoccupation processes. In this respect, individuals with high neuroticism might 1) further concern themselves in the COVID19-related information and pandemic consequences (e.g., their health, crisis preoccupation), and 2) experience more adverse impacts during this preoccupation (i.e., affective reactivity) [6]. Consistent with these results, Zajenkowski et al. [7] and Abdelrahman [8] demonstrated that the neuroticism personality trait is positively associated with adopting social distancing to avoid COVID-19 infection. Nevertheless, Cowling et al. [9] showed that high anxiety levels are attributed to less personal protection practices (e.g., handwashing and using face masks) and stricter social distancing for infection avoidance. This behavior contradiction in prone-to-neuroticism people in the face of a pandemic is probably due to their neuroticism levels. For instance, individuals with higher levels of anxiety and fear are more likely to adopt denial as a psychological defense mechanism for the mitigation of their fears. In other words, they practice risky behaviors, such as substance/medication use disorders or risky sexual practices, for feeling secure psychologically [10].
Moreover, it has been proved that neuroticism can be associated with the immune system in three manners: 1) a “main effects model” wherein personality yields tonic discrepancies in the immune system; 2) a “predisposition model” wherein effects of stressors on the immune system are dependent on personality; 3) a “common cause model” wherein immune function and personality are related attributable to a common determinant (e.g., gene linkage). Furthermore, the impact of neuroticism on psychosocial mediators may have adverse effects on the immune system [11]. These psychological mediators comprise the followings:

Mood

Neuroticism is strongly related to negative mood. Also, the negative mood has been found to influence the immune system; generally. Although it is associated with less functional, enumerative, and in vivo immune parameters [12], depression might be correlated with the elevated secretion of proinflammatory cytokines [13]. Moreover, induction of acute negative mood may lead to more lymphocyte numbers and activity, lasting for a short while, especially for NK cells [12].

Stressors and life events

As reported by some of the recent studies, neuroticism can play a crucial role in moderating the effects of stressors on the immune system. However, the neuroticism impacts on the immune system may be mediated by stressors. In other words, neuroticism might affect the immune system by changing the quality and quantity of stressors. Therefore, personality not only does lead to the presence of stressors (i.e., exposure) but also influences the response to stressors (i.e., reactivity) [11]. Bolger and Schilling [14] investigated the dependence of the relationship between neuroticism and negative mood on the exposure and reactivity separately. Based on their results, exposure and reactivity accounted for roughly 14 and 29% of the relationship between neuroticism and negative mood, respectively.

Health behavior

The immune system can be negatively influenced by health behaviors, including using alcohol or other drugs, insufficient sleep, smoking, or lack of physical activity. Such unhealthy behaviors are observed at higher levels of neuroticism [15,16].
In sum, these results developed a superior understanding of how individuals respond to the COVID-19 pandemic according to the relation of neuroticism with personal hygiene practices, immune system, and risk perception. Thus, the clinicians should highlight the significance of neuroticism in the prediction of individuals’ protective behaviors during the COVID-19 pandemic. In this respect, the neuroticism evaluation via short self-report scales or new technologies such as digital footprints (e.g., likes on social media platforms) could contribute to screening many individuals with minimal attempt and launching personality-tailored prevention campaigns (e.g., bombarding individuals of high neuroticism with information about how to pass through the cruel cycle) [17].

ACKNOWLEDGEMENTS

None.

The authors have no potential conflicts of interest to disclose.

REFERENCES

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