Relationship between Sensitivity Tendency and Psychological Stress Reactivity in Healthy Students

This study examined the relationship between sensory processing sensitivity and psychological stress reactivity in 69 healthy Japanese university students. The Japanese version of the Highly Sensitive Person Scale and the Japanese version of the Adolescent/Adult Sensory Profile were used for subjective assessment. The Galvanic skin response was measured as an objective measure of stress responses while the participants were completing the Stroop task. The Wilcoxon signed-rank test, the Spearman rank correlation coefficient, and the Mann–Whitney U test were conducted for data analysis. The results demonstrated that there was no significant correlation between the Japanese version of the Highly Sensitive Person Scale and Galvanic skin response. However, there was a marginal trend toward significance between low registration in the Japanese version of the Adolescent/Adult Sensory Profile and Galvanic skin response (rs = 0.231, p < 0.10;rs = 0.219, p < 0.10), suggesting that self-rated sensitivity was not necessarily associated with objective measures. These results indicate that sensory processing sensitivity analyses require the consideration of the traits and characteristics of the participants and multifaceted evaluations using a sensitivity assessment scale other than the Japanese version of the Highly Sensitive Person Scale.

Cognitive underpinnings of COVID-19 vaccine hesitancy.

RATIONALE: Vaccines save lives. Despite the undisputed value of vaccination, vaccine hesitancy continues to be a major global challenge, particularly throughout the COVID-19 global pandemic. Since vaccination decisions are counter-intuitive and cognitively demanding, we propose that vaccine hesitancy is associated with executive function-a group of high-level cognitive skills including attentional control, working memory, inhibition, self-regulation, cognitive flexibility, and strategic planning. OBJECTIVE: We set out to test (i) whether vaccine hesitancy is driven by individual differences in executive function beyond established socio-demographic factors (e.g., education, political orientation, gender, ethnicity, age, religiosity) and depressed mood, and (ii) whether this relationship is exacerbated by situational stress. METHODS: Two studies were conducted with U.S. residents. Using a cross-sectional design, Study 1 examined the associations between executive function, socio-demographic factors, COVID-19 conspiracy beliefs, trust in health authorities, and COVID-19 vaccine hesitancy. Using an experimental design, Study 2 focused solely on unvaccinated individuals and tested the interactive effect of executive function and stress on willingness to receive a COVID-19 vaccine. We used ordinal logistic regressions to analyze the data. RESULTS: Individual differences in executive function predicted participants' COVID-19 conspiracy beliefs, trust in health authorities, and their willingness to vaccinate against COVID-19. Importantly, the unique contribution of executive function to vaccine hesitancy could not be explained by socio-demographic factors or depressed mood. Furthermore, Study 2 revealed that weaker executive function had detrimental effects on COVID-19 vaccine acceptance and trust in health authorities mainly under heightened stress. CONCLUSIONS: Individual differences in executive function and situational stress jointly impact COVID-19 vaccination decisions and need to be considered together when designing health communications aimed at reducing COVID-19 vaccine hesitancy. Interventions that lower stress and promote trust have the potential to increase vaccine acceptance, especially for individuals with weaker executive function.

Feelings of fear, sadness, and loneliness during the COVID-19 pandemic: Findings from two studies in the UK.

During the COVID-19 pandemic, exposure to COVID-related stimuli, has been enormous. Exposure to threat-related stimuli, can have a significant impact on people's wellbeing particularly in relation to COVID-related anxiety. The present research comprises two empirical studies. In Study 1, a newly developed Emotional Stroop Task (EST) and an Image Rating Task (IRT) were used to assess, automatic and non-automatic affective responses to COVID-related words and images during the first wave of the pandemic in the UK general population. In Study 2, the same tasks were used to evaluate the affective responses of University students during the second wave of the pandemic. Additionally, loneliness and pro-social behaviours were explored in relation COVID-related anxiety in the same population. Overall, the results showed that automatic affective responses as measured by interference effects on the EST, remained unaffected during the pandemic. However, non-automatic affective responses to COVID-related images measured by the IRT, indicated that participants rated these images as more fearful sadder and higher in anger, compared to non-COVID negative images matched for arousal and negativity and this was more evident in people with high COVID-anxiety. Trait anxiety was related to higher levels of loneliness, more prosocial behaviour and higher intentions to help others, while COVID-related anxiety mediated these effects, suggesting that for high levels of trait anxiety, participants were more likely to have helped someone in need during the pandemic when their COVID-anxiety levels were low.