Assessing the perceived effect of non-pharmaceutical interventions on SARS-Cov-2 transmission risk: an experimental study in Europe.

We conduct a large (N = 6567) online experiment to measure the features of non-pharmaceutical interventions (NPIs) that citizens of six European countries perceive to lower the risk of transmission of SARS-Cov-2 the most. We collected data in Bulgaria (n = 1069), France (n = 1108), Poland (n = 1104), Italy (n = 1087), Spain (n = 1102) and Sweden (n = 1097). Based on the features of the most widely adopted public health guidelines to reduce SARS-Cov-2 transmission (mask wearing vs not, outdoor vs indoor contact, short vs 90 min meetings, few vs many people present, and physical distancing of 1 or 2 m), we conducted a discrete choice experiment (DCE) to estimate the public's perceived risk of SARS-CoV-2 transmission in scenarios that presented mutually exclusive constellations of these features. Our findings indicate that participants' perception of transmission risk was most influenced by the NPI attributes of mask-wearing and outdoor meetings and the least by NPI attributes that focus on physical distancing, meeting duration, and meeting size. Differentiating by country, gender, age, cognitive style (reflective or intuitive), and perceived freight of COVID-19 moreover allowed us to identify important differences between subgroups. Our findings highlight the importance of improving health policy communication and citizens' health literacy about the design of NPIs and the transmission risk of SARS-Cov-2 and potentially future viruses.

Social influence in the darknet market: The impact of product descriptions on cocaine sales.

BACKGROUND: The rise of the darknet market, supported by technologies such as the Tor Browser and cryptocurrencies, has created a secure environment in which illicit transactions can occur. However, due to the lack of government oversight in this hidden online domain, darknet markets face significant challenges in upholding social order. Hence, this study explores the social dynamics that promote social order in a darknet market, focusing on the impact of item descriptions on sales. In particular, the study examines how text contained in product listings can influence sales and contribute to social order. METHOD: To conduct this analysis, we examined 4160 cocaine listings on AlphaBay, which was active from December 2014 to July 2017 and is one of the largest darknet markets in history. Using generalised additive models (GAMs), we assessed the impact of various listing description features, including content and semantic structure, on cocaine sales. RESULTS: The results showed that sales increased by 61.6 % when listings included delivery information in their description, compared to offers that did not. In addition, the standardised sentiment score (ranging 0,1) of the product description increased positively, and estimated sales increased by 260.5 %. We also found that international shipping reduced sales by 28.3 %. Finally, we found that listings stating the product origin increased sales for all continents except Asia. CONCLUSION: The study sheds light on the characteristics of product advertising that facilitate social order within a darknet market. Listings that include delivery details in the description reduce uncertainty about a critical stage of the transaction process while using positive language increases trust. This study makes both an empirical and a theoretical contribution by demonstrating the influence of ad descriptions on sales and the intricate role of social influences in shaping market order.

Shared understandings of vaccine hesitancy: How perceived risk and trust in vaccination frame individuals' vaccine acceptance.

Extensive research has framed vaccine hesitancy as a property of a heterogeneous group of individuals, ranging from total acceptance to complete refusal. Nevertheless, not much research has explored this heterogeneity, mainly focusing on central tendencies of single belief-related items. Using data from an original survey on a sample of Italian citizens, this paper examines this heterogeneity, exploiting individuals' cognitive variation to map clusters of individuals who share similar cognitive schemas on vaccine uptake. The results showed the existence three groups, characterized by a different articulation of predictors of vaccine hesitancy, revealing different understandings of vaccine uptake. We then analyzed within-cluster characteristics and showed that cognitive segmentation was connected to different levels of perceived risk, confidence, and support for vaccination. We further showed that cognitive clustering also entailed a mean of social stratification that was correlated with individuals' educational levels, and that the predictors of vaccine hesitancy were articulated differently in each group. This study, adopting a recent perspective in the analysis of systems of beliefs, moves one step further in disentangling the complexity of vaccine acceptance. Results suggested the usefulness of including individuals' cognitive characteristics in vaccine hesitancy research and in the development of interventions addressed at increasing vaccine acceptance.

Do cognitive styles affect vaccine hesitancy? A dual-process cognitive framework for vaccine hesitancy and the role of risk perceptions.

RATIONALE: In this study, we consider cognitive differences in vaccine hesitancy and how perceived risks intervene in this relationship. Recent research agrees on the existence of two cognitive processes, intuitive and analytic cognition. Different individuals lean toward one of these processes with varying degrees of strength, influencing day-to-day behavior, perceptions, and decisions. Thinking dispositions might influence, at the same time, vaccine acceptance and perceived risks of vaccine-preventable disease, but the implications of individuals' cognitive differences for vaccination uptake have seldom been addressed from a sociological standpoint. OBJECTIVE: We bridge this gap by adopting a dual-process framework of cognition and investigate how thinking styles have a direct association with vaccine hesitancy and an indirect one through perceptions of risk. METHODS: We use data from original surveys carried out between September and November 2019 on a sample of the Italian population, participating in an online panel run by a major Italian survey company. We use Karlson, Holm, and Breen (KHB) decomposition to compare coefficients of nested-nonlinear models, separate the direct and indirect association of cognitive processes with vaccine hesitancy, and disentangle the contribution of each measure of risk perception. RESULTS: Net of individual socio-demographic characteristics, intuitive thinking is positively associated with the likelihood of being vaccine hesitant, and this direct association is as important as the indirect one through risk perceptions. Affective risk perceptions account for over half of the indirect association, underlining the centrality of affective versus probabilistic approaches to risk perception. CONCLUSION: This study contributes to the existing literature by highlighting the importance of including cognitive characteristics in vaccine hesitancy research, and empirically showing individuals' qualitatively complex perceptions of risks. Taking into account individuals' preferred cognitive style and affective concerns might be important in developing better tailored communication strategies to contain vaccine hesitancy.

Correction: Symbolic universes between present and future of Europe. First results of the map of European societies' cultural milieu.

[This corrects the article DOI: 10.1371/journal.pone.0189885.].

Symbolic universes between present and future of Europe. First results of the map of European societies' cultural milieu.

This paper reports the framework, method and main findings of an analysis of cultural milieus in 4 European countries (Estonia, Greece, Italy, and UK). The analysis is based on a questionnaire applied to a sample built through a two-step procedure of post-hoc random selection from a broader dataset based on an online survey. Responses to the questionnaire were subjected to multidimensional analysis-a combination of Multiple Correspondence Analysis and Cluster Analysis. We identified 5 symbolic universes, that correspond to basic, embodied, affect-laden, generalized worldviews. People in this study see the world as either a) an ordered universe; b) a matter of interpersonal bond; c) a caring society; d) consisting of a niche of belongingness; e) a hostile place (others' world). These symbolic universes were also interpreted as semiotic capital: they reflect the capacity of a place to foster social and civic development. Moreover, the distribution of the symbolic universes, and therefore social and civic engagement, is demonstrated to be variable across the 4 countries in the analysis. Finally, we develop a retrospective reconstruction of the distribution of symbolic universes as well as the interplay between their current state and past, present and future socio-institutional scenarios.

Pathos & Ethos: Emotions and Willingness to Pay for Tobacco Products.

JEL CLASSIFICATION: C26, C99, D03, I18. PSYCINFO CLASSIFICATION: 2360; 3920.

Microblogging and nanotweets: Nanotechnology on Twitter.

The social web represents a new arena for local, national and global conversations and will play an increasing role in the public understanding of science. This paper presents an analysis of the representations of nanotechnology on Twitter, analysing over 24,000 tweets in terms of web metrics, latent semantic and sentiment analysis. Results indicate that most active users on nanotechnology are distributed according to a power law distribution and that web metric indicators suggest little conversation on the topic. In terms of content, there is a remarkable similarity with previous studies of nanotechnology's representations in other media outlets. Related to content is the sentiment analysis that indicates predominantly positively loaded words in the corpus. Negative sentiments mainly took the form of uncertainty and fear of the unknown rather than open hostility.