'They are conspiring against us': How outgroup conspiracy theories stimulate environmental neglect in intergroup resource dilemmas.

Natural resources are limited, and people often share these limited resources in groups, which creates an intergroup resource dilemma. To understand individuals' sustainable behaviours in intergroup resource dilemmas in the context of group interactions, the present research systematically investigates the effect of outgroup conspiracy theories on sustainable behaviours and preliminarily explores the internal mechanism underlying this effect. First, a survey study (Study 1) relying on real-world intergroup relations first confirmed the negative correlation between outgroup conspiracy beliefs and sustainable intentions in intergroup resource dilemmas. Then, an online experimental study that utilized the real situation of a region in China (Study 2) tested the causal relationship between exposure to an outgroup conspiracy theory and sustainable intentions, as well as showing the mediating role of intergroup threat perception underlying this relationship. Finally, a preregistered experimental laboratory study (Study 3) further verified the causal effect of exposure to an outgroup conspiracy theory on sustainable behaviours, again confirming the mediating role of intergroup threat perception. In general, our research demonstrates that exposure to an outgroup conspiracy theory stimulates individuals' environmental neglect and reduces their sustainable behaviours by increasing their perceptions of intergroup threat when faced with intergroup resource dilemmas.

The correlation between conspiracy mentality and vaccine intentions is moderated by social events: Evidence from longitudinal data during COVID-19 pandemic in the UK.

Social events may provide important cues that influence the sense of reality, including the perception that conspiracy theories are plausible. Using longitudinal panel data collected in the UK from March 2020 to December 2021, this study aims to identify whether social events influenced the strength of the association between conspiracy mentality and vaccine intentions during the COVID-19 pandemic. Consistent with previous research, the conspiracy mentality was a significant predictor of vaccine intentions across three-time points, but also that conspiracy mentality measured in March 2020 predicted that participants were more hesitant to the vaccines in December 2020. The primary finding was that different social events moderated the strength of the correlation between conspiracy mentality and vaccine intentions within similar participants. Conspiracy mentality became more vital to evaluate COVID-19 vaccines in December 2020, when the vaccination program was about to commence.

Watching for a snake in the grass: Objectification increases conspiracy beliefs.

Objectification, being treated as a tool to achieve someone's instrumental goals, is a common phenomenon. A workplace supervisor may view employees solely in terms of their output; likewise, friends may be seen only for their potential for personal and social advancement. We conducted five studies (N = 1209) to test whether objectification increases conspiracy beliefs through thwarted trust and whether postobjectification increases in conspiracy beliefs carry behavioural implications. While conspiracy beliefs may have evolved as a strategy for survival, they may be considered maladaptive in the modern world. Therefore, understanding the antecedents, underlying mechanisms, and implications of conspiracy beliefs is essential. We measured (Study 1) and manipulated objectification (Studies 2-5), consistently finding that objectification decreased trust, thereby increasing conspiracy beliefs (Studies 1-5). This effect remained after considering negative emotions (Study 2). Increased conspiracy beliefs following objectification positively predicted unethical tendencies, and the effect of objectification on unethical tendencies was serially mediated by trust and conspiracy beliefs (Study 4). Restoring objectified people's trust weakened their conspiracy beliefs and unethical tendencies (Study 5). We discussed the implications of our findings, proposing directions for researchers, practitioners, managers, and policymakers for theoretical advancement, healthier coping, and promotion of well-being.

Organized sexualized and ritual violence: Results from two representative German samples.

BACKGROUND: Organized sexualized and ritual abuse (ORA), a contentious issue since the 1980s, remains a polarizing topic. Although there is much debate about the existence of this phenomenon, a differentiated perspective is lacking, and no representative study has yet addressed the frequency. OBJECTIVE: This paper aims to investigate the frequency of ORA in Germany using two representative datasets. PARTICIPANTS AND SETTING: Data were collected from representative samples of the German population (N = 2522, N = 2515). Participants aged 16 to 96 years (50 and 53 % female) were recruited. They were selected by a random route procedure and asked to fill out a paper-pencil-questionnaire. METHODS: The four aspects of ORA (severe sexual violence, perpetrator networks, commercial exploitation, ideology) were assessed based on the definition provided by an expert group. Additionally, in the second survey, a direct yes/no question about the experience of ORA as well as details on perpetrators and offense characteristics were surveyed. RESULTS: Frequency of ORA was low. The direct question on ORA was affirmed by 0.5 % (n = 13), while according to the criteria of the definition, only 0.2 % or less of individuals experienced organized sexualized abuse, and <0.1 % experienced ritual abuse. CONCLUSION: Although ORA is discussed thoroughly, frequencies in the German population are low. This may be due to inconsistent terminology and operationalization of definitions with lack of precision. However, an intersection of conspiracy beliefs and the topic of ritual violence sheds another light on this issue that should receive more attention.

Conspiring under threats! An investigation of associations between COVID-19 health and economic threats and conspiracy beliefs in Italy and Argentina.

Theory and research suggest that threats aroused by a given crisis lead to conspiracy beliefs. Although crises involve the arise of multiple threats (e.g., economic, safety, etc.) diversely affecting various needs and outcomes (i.e., cognition, emotion and behaviour), no research has yet focused on specific relations that different threats may have with the endorsement of conspiracy beliefs. In this study, we distinguished between health and economic threats aroused by the COVID-19 pandemic, and we tested their associations with conspiracy beliefs. Findings from two correlational studies conducted in Italy and Argentina showed that while COVID-19's economic threat was positively and consistently related to conspiracy beliefs, the relationship between COVID-19's health threat and conspiracy beliefs was negative and significant in the Italian sample and non-significant in the Argentinian sample. Results are discussed within the context of the effects of multiple threats elicited by crises on conspiracy beliefs.

Unfounded beliefs, distress and powerlessness: A three-wave longitudinal study.

The aim of the study was to examine the relationships between unfounded COVID-19 beliefs and distress and powerlessness, specifically, whether distress and powerlessness are causes or consequences of unfounded COVID-19 beliefs represented by conspiracy beliefs and pseudoscientific beliefs regarding treatment and measures. Unfounded beliefs were assessed using the COVID-19 Unfounded Beliefs Scale; distress was measured with the Symptom Checklist-10, and powerlessness was measured with four items measuring the feeling of losing control. Data collection took place during three phases of the pandemic in Slovakia (October 2021, N = 1838; July 2022, N = 1,420; April 2023, N = 925). Results suggest that individuals with stronger unfounded beliefs about COVID-19 reported greater powerlessness longitudinally, and individuals with stronger COVID-19 unfounded beliefs treatment and measures reported greater distress longitudinally (notably, beliefs about COVID-19 measures in the first wave were associated with distress in the second wave, and beliefs about COVID-19 treatment in the second wave were associated with distress in the third wave). The present findings corroborate an existential threat model of conspiracy theories that says the relationship between unfounded beliefs and indicators of well-being is bidirectional, so interventions should be focused both on eliminating the unfounded beliefs and strengthening well-being.

The strength of conspiracy beliefs versus scientific information: the case of COVID 19 preventive behaviours.

Controlling the spread of COVID-19 requires individuals to adopt preventive behaviours, but conspiracy beliefs about its origin are spreading. The aim of this paper is to better comprehend the strength of conspiracy beliefs versus objective COVID-19 information to predict people's adherence to protective behaviours (getting vaccinated, being tracked through APPs, and keeping social distance from infected people). Study 1 shows that COVID-19 implicit theories detected in the Pre-study were activated as independent factors that constitute people's interpretations of the virus origin. These beliefs were related to a lesser intention to engage in preventive behaviours and a higher level of mistrust in institutional information, although some beliefs generate positive expectations about COVID-19 consequences. In Study 2, conducted with a different sample, official COVID-19 information was included as an independent variable, but this new variable did not further explain results. Lastly, Study 3 consisting of both previous samples confirmed that conspiracy beliefs had a direct effect on a lesser willingness to engage in preventive actions, a higher mistrust, and positive expectations about COVID-19 consequences. We conclude that objective COVID-19 information did not buffer the effect of conspiracy beliefs; they interfere with actions to prevent it by taking institutions as scapegoats or complicit with secret powers.

Determinants of COVID-19 vaccination intention in Central and Eastern Europe: A cross-sectional study in Poland, Romania, and Slovenia.

BACKGROUND: Identifying predictors of vaccination intention is critical to developing appropriate programs and campaigns targeting groups reluctant to be vaccinated. This study aimed to identify the determinants of vaccination intention at the beginning of the COVID-19 pandemic in three Central and Eastern European (CEE) countries: Poland, Romania, and Slovenia. METHODS: In this cross-sectional study, a sample of unvaccinated 1723 Poles, Romanians, and Slovenians completed an online survey (April 2021). Questions included measures of vaccination intention, attitudes towards vaccines, conspiracy mindset, preference for a type of vaccine, and trust in information sources. RESULTS: The results showed that mistrust of vaccine benefits and concerns about commercial profiteering negatively predicted vaccination intention. Conversely, trust in information from medical professionals and scientists, official sources, and traditional media was positively related to vaccination intention, while trust in digital media was negatively related to vaccination intention. In addition, preference for mRNA vaccine type was a positive significant predictor of vaccination intention. The differences between countries are discussed. CONCLUSIONS: The study results deliver suggestions for developing appropriate vaccine uptake programs and campaigns that should consider presenting the positive outcomes of vaccines via official sources and traditional media based on scientific evidence and medical professionals' knowledge.

[Ritual sexual abuse : Orientation to patient well-being in a polarized debate]. / Ritueller sexueller Missbrauch : Orientierung am Patientenwohl in einer polarisierten Debatte.

BACKGROUND: The background to this article is a polarized media debate about ritual violence against children in German speaking countries. Two opposing positions have formed, which are unable to engage in a reasonable exchange with each other. OBJECTIVE: The article therefore aims to contribute to bridging the differences and argues, above all in the interests of patient well-being, for positioning oneself beyond polarization and to reflect on an evidence-base in treatment as well as in scientific discourse. MATERIAL AND METHODS: The article is based on a critical examination of exemplary scientific literature, public investigation reports and diverse media coverage. RESULTS: In certain psychotraumatology circles and in the media (especially on social media, such as telegram), there is a conspiracy narrative about a large network of perpetrators who inflict the most serious sexual violence on children in a ritual context. An uncritical belief in this has already led to mistreatment of patients and also to a fundamental mistrust of their statements. This threatens these already vulnerable patients with further harm, which contradicts the basic principles of medical ethics.

Public Discourse, User Reactions, and Conspiracy Theories on the X Platform About HIV Vaccines: Data Mining and Content Analysis.

BACKGROUND: The initiation of clinical trials for messenger RNA (mRNA) HIV vaccines in early 2022 revived public discussion on HIV vaccines after 3 decades of unsuccessful research. These trials followed the success of mRNA technology in COVID-19 vaccines but unfolded amid intense vaccine debates during the COVID-19 pandemic. It is crucial to gain insights into public discourse and reactions about potential new vaccines, and social media platforms such as X (formerly known as Twitter) provide important channels. OBJECTIVE: Drawing from infodemiology and infoveillance research, this study investigated the patterns of public discourse and message-level drivers of user reactions on X regarding HIV vaccines by analyzing posts using machine learning algorithms. We examined how users used different post types to contribute to topics and valence and how these topics and valence influenced like and repost counts. In addition, the study identified salient aspects of HIV vaccines related to COVID-19 and prominent anti-HIV vaccine conspiracy theories through manual coding. METHODS: We collected 36,424 English-language original posts about HIV vaccines on the X platform from January 1, 2022, to December 31, 2022. We used topic modeling and sentiment analysis to uncover latent topics and valence, which were subsequently analyzed across post types in cross-tabulation analyses and integrated into linear regression models to predict user reactions, specifically likes and reposts. Furthermore, we manually coded the 1000 most engaged posts about HIV and COVID-19 to uncover salient aspects of HIV vaccines related to COVID-19 and the 1000 most engaged negative posts to identify prominent anti-HIV vaccine conspiracy theories. RESULTS: Topic modeling revealed 3 topics: HIV and COVID-19, mRNA HIV vaccine trials, and HIV vaccine and immunity. HIV and COVID-19 underscored the connections between HIV vaccines and COVID-19 vaccines, as evidenced by subtopics about their reciprocal impact on development and various comparisons. The overall valence of the posts was marginally positive. Compared to self-composed posts initiating new conversations, there was a higher proportion of HIV and COVID-19-related and negative posts among quote posts and replies, which contribute to existing conversations. The topic of mRNA HIV vaccine trials, most evident in self-composed posts, increased repost counts. Positive valence increased like and repost counts. Prominent anti-HIV vaccine conspiracy theories often falsely linked HIV vaccines to concurrent COVID-19 and other HIV-related events. CONCLUSIONS: The results highlight COVID-19 as a significant context for public discourse and reactions regarding HIV vaccines from both positive and negative perspectives. The success of mRNA COVID-19 vaccines shed a positive light on HIV vaccines. However, COVID-19 also situated HIV vaccines in a negative context, as observed in some anti-HIV vaccine conspiracy theories misleadingly connecting HIV vaccines with COVID-19. These findings have implications for public health communication strategies concerning HIV vaccines.

Racial discrimination in healthcare services among Black individuals in Canada as a major threat for public health: its association with COVID-19 vaccine mistrust and uptake, conspiracy beliefs, depression, anxiety, stress, and community resilience.

OBJECTIVES: To examine the prevalence of major racial discrimination (MRD) in healthcare services and its association with COVID-19 vaccine mistrust and uptake, conspiracy theories, COVID-19-related stressors, community resilience, anxiety, depression, and stress symptoms. STUDY DESIGN: The study used a population-based cross-sectional design. METHODS: Data from the BlackVax dataset on COVID-19 vaccination in Black individuals in Canada was analyzed (n = 2002, 51.66% women). Logistic regression analyses were performed to examine the association between MRD and independent variables. RESULTS: 32.55% of participants declared having experienced MRD in healthcare services. Participants with MRD were less vaccinated against COVID-19, presented higher scores of vaccine mistrust, conspiracy beliefs, COVID-19 related stressors, depression, anxiety, and stress, and had lower scores of community resilience. They were more likely to experience depression (AOR = 2.13, P < 0.001), anxiety (AOR = 2.00, P < 0.001), and stress symptoms (AOR = 2.15, P < 0.001). Participants who experienced MRD were more likely to be unvaccinated (AOR = 1.35, P = 0.009). CONCLUSIONS: Racial discrimination experienced by Black individuals in health services is a major public health concern and threat to population health in Canada. Federal, provincial, and municipal public health agencies should adapt their programs, strategies, tools, and campaigns to address the mistrust created by racial discrimination.

Alike but not the same: Psychological profiles of COVID-19 vaccine skeptics.

One of the challenges of the SARS-CoV-2 pandemic was a widespread skepticism about vaccination. To elucidate the underlying mental and emotional predispositions, we examined a sample of 1428 participants using latent profile analysis (LPA) on selected personality trait variables, mental health status, and measures of irrational beliefs. LPA revealed five distinct profiles: two classes of non-skeptics and three of skeptics. The smaller non-skeptic class reported the highest rates of mental health problems, along with high levels of neuroticism, hostility, interpersonal sensitivity, and external locus of control. The larger non-skeptic class was psychologically well-balanced. Conversely, the skeptic groups shared strong distrust of COVID-19 vaccination but differed in emotional and mental profiles, leading to graded differences in endorsing extreme conspiracy beliefs. This suggests that vaccine skepticism is not solely a result of mental illness or emotional instability; rather extreme skepticism manifests as a nuanced, graded phenomenon contingent on personality traits and conspirational beliefs.

COVID-19 vaccination communication: Effects of vaccine conspiracy beliefs and message framing among black and white participants.

BACKGROUND: The importance of vaccination in combating the COVID-19 pandemic is widely acknowledged. The aim of this study was (1) to understand how one's vaccine conspiracy beliefs would influence their public health news processing, (2) to examine how specific public health news features (i.e., news frame) would influence message processing, and (3) to examine if there were any differences between Black and White participants in their message processing. METHODS: A nationwide online experiment (N = 821) with a 3 (vaccine conspiracy beliefs: high vs. moderate vs. low) × 2 (participants' race: Black vs. White) × 2 (news frames: gain vs. loss) mixed-factorial design was conducted in the United States. RESULTS: Participants' level of vaccine conspiracy beliefs was predictive of their responses to outcome measures. Additionally, Black participants reported higher perceived message effectiveness, more favorable attitudes toward the message, and higher vaccination intentions than White participants. Furthermore, health news that emphasized vaccination benefits produced more favorable attitudes than those emphasizing losses associated with non-vaccination, especially for White participants. Lastly, participants reported more favorable attitudes toward gain-framed health news regardless of their vaccine conspiracy beliefs. CONCLUSION: It is crucial for health officials to work to find effective media message strategies to combat COVID-19 vaccine conspiracy theories and misinformation. Furthermore, this study supports the significance of health organizations' ongoing efforts to tailor public health messaging to specific racial groups, as evidenced by considerable variations in perceptions among Black and White Americans.

Investigating Beliefs in Anti-Vax Conspiracy Theories among Medical Students.

While the doctors' role in immunization is essential, their lack of knowledge or vaccine hesitancy may affect their ability to communicate effectively and educate patients about vaccination, vaccine hesitancy, and vaccine conspiracy theories. This, in turn, may hinder health policy aimed at fighting infectious diseases. Vaccine hesitancy is prevalent not only among the general population but also among healthcare workers; thus, this study is aimed at assessing future doctors' attitudes towards anti-vax conspiracy theories. A total of 441 medical students at Poznan University of Medical Sciences completed a web-based survey designed to explore their attitudes toward the six most prevalent anti-vaccine conspiracy theories. The survey showed that although over 97% of future doctors support vaccinations as an effective form of fighting infectious diseases, and 80% did not believe in any anti-vax conspiracy theory, a significant fraction of 20% of medical students either believed in at least one such theory or were unsure. It has also shown that male and younger students who had not received a flu vaccination and defined themselves as politically right-wing or conservative and religious were more likely to believe in anti-vax conspiracy theories. Our data suggest that, in order to overcome medical students' ambivalent attitudes towards anti-vax conspiracy theories, they should receive more education about the importance of vaccination in preventing disease and about effective ways to combat vaccine hesitancy and anti-vax conspiracy theories.

Exploring Factors Influencing COVID-19 Vaccine Hesitancy and Refusal: A Study in Italy during the Vaccine Rollout.

The availability of an effective vaccine against COVID-19 virus marked a crucial moment in the fight against its pandemic spread. Although distribution of the vaccine began in December 2020, high acceptance rates and repeated administrations are needed to achieve widespread immunization, but hesitation toward the vaccine persists to this day. To identify psychological variables and other factors associated with vaccine hesitancy, we conducted a study from August 2021 to October 2022. An Internet-based survey gathered data from 137 Italian adults, exploring attitudes, sociodemographic characteristics, psychological variables, and immunization behavior. The results analysis showed that gender (69.2% of vaccine-adverse people were males), education (years of education was negatively correlated with vaccine hesitancy), and religion (not declaring oneself religious or atheist was more likely to be associated with hesitancy toward the vaccine) were the variables influencing attitudes toward the vaccine. Other psychological variables differentiated people with opposite attitudes toward the vaccine: high scores on the Conspiracy Mentality Questionnaire (CMQ) and Core Belief Inventory (CBI) were positively correlated with vaccine hesitancy, indicating that individuals with more pronounced core belief violation, due to the pandemic, tend to express higher levels of vaccine hesitancy. Finally, a linear regression analysis confirmed the role of participants' conspiracy mentality as a valid predictor for vaccine hesitancy.

Conspiracy theory beliefs in the adolescent population: A systematic review.

INTRODUCTION: While the study of conspiracy theory beliefs is a relatively new research area, there has been a rise in academic interest in recent years. The literature provides evidence of relationships between conspiracy theory beliefs and a range of factors, but the vast majority of studies are limited to adult samples, and it is unclear how such beliefs present in adolescence. METHODS: The systematic review was conducted according to the PRISMA-S format. Relevant databases were searched up to February 23, 2023, for quantitative studies related to adolescent conspiracy theory beliefs. RESULTS: The six included articles show that conspiracy theory beliefs are present from the start of adolescence, and stable from age 14 upwards, with correlations reported for mistrust and paranoid thinking. Negative relationships were reported for cognitive factors such as ontological confusion, cognitive ability, and actively open-minded thinking. Health-related beliefs correlated with adverse childhood experiences, peer problems, conduct, and sociodemographic factors. Right-wing authoritarianism and anxiety positively correlated with intergroup conspiracy theory beliefs. CONCLUSION: While some factors from adult studies are replicated in the review, there are differences between age groups. The age at which conspiracy theory beliefs begin to form indicate developmental aspects of adolescence, and possibly childhood, that require further examination. Cognitive factors show promise for interventions and should be explored further. However, the lack of studies using adolescent populations is an issue that must be resolved for a greater understanding of conspiracy theory beliefs and a move toward effective interventions.

Conspiracy Mentality: How it Relates to Populism, Relative Deprivation, Mistrust of Expertise and Voting Behaviour.

Background and research aims. Considering the high prevalence of conspiracy theories and misinformation, there is an urgent need to explain the tendency to adopt a conspiracy mentality and identify behavioural (including voting) outcomes of a high conspiracy mentality. The aims of the present paper are 1) the examination of populist attitudes dimensions, relative deprivation and mistrust of expertise as predictors of conspiracy mentality and 2) proposal of comprehensive models, that combine predictors of conspiracy mentality and its voting consequences. METHODOLOGY: Studies utilised OSL regression and structural equation modelling. RESULTS: The overall regression was statistically significant. It was found that dimensions of populist attitudes (anti-elitism, sovereignty), relative deprivation and mistrust of expertise were significant predictors of conspiracy mentality. In line with the second research aim, the fitness of models was confirmed and results suggest mistrust of expertise is also a significant predictor of far-right voting. DISCUSSION: The contribution of the paper lies in connecting conspiracy mentality with not only attitudes but also with important behaviour outcome - voting behaviour. We propose future research should experimentally examine whether the reduction of some of the identified predictors could possibly lower levels of conspiracy mentality and whether this reduction translates into voting behaviour.

Corrigendum: Thinking preferences and conspiracy belief: intuitive thinking and the jumping to conclusions-bias as a basis for the belief in conspiracy theories.

[This corrects the article DOI: 10.3389/fpsyt.2020.568942.].

How perceived coercion polarizes unvaccinated people: The mediating role of conspiracy beliefs.

During the COVID-19 pandemic, different policies were implemented to increase vaccination uptake. Meanwhile, conspiracy theories spread widely, and vaccinated versus unvaccinated people increasingly polarized against each other. This study examined the associations between perceived vaccination coercion, conspiracy beliefs and polarization. We tested the relationship of vaccination status with perceived vaccination coercion, conspiracy beliefs, and polarization, with a total sample size of N = 1202 (n = 400 in China, n = 401 in the US, and n = 401 in the UK), among them n = 603 were vaccinated and n = 599 were unvaccinated. As pre-registered, unvaccinated people perceived more vaccination coercion and endorsed more conspiracy theories. Conspiracy mentality was positively related to perceived coercion. Contrary to our hypotheses, vaccinated people were more polarized toward unvaccinated people than vice versa. Finally, conspiracy beliefs mediated the link between perceived coercion and polarization among unvaccinated people.

Controversies of COVID-19 vaccine promotion: lessons of three randomised survey experiments from Hungary.

OBJECTIVES: This study aimed to investigate vaccine promotion messages, examine the heterogeneous effects of these messages and provide experimental evidence to help evaluate the efficiency of COVID-19 vaccine promotion campaigns in Hungary. STUDY DESIGN: This study presents the results of three randomised survey experiments that were embedded in cross-sectional, representative, public opinion studies of Hungarian adults based on in-person interviews. Simple randomisation and blinding were applied to assign participants into the control group (no message) or treatment groups (vaccine promotion messages). METHODS: The first experiment (March 2021) aimed to test vaccination promotion messages from politicians (N = 331) and medical experts (N = 342) by comparing experimental groups' trust in vaccines and conspiratorial beliefs with the control group (N = 327). The second experiment (September 2022) tested the impact of two communication strategies ([1] highlighting the safety and effectiveness of vaccines, N = 104; and [2] highlighting the wide variety of vaccines available, N = 110) on increasing vaccine uptake among those who were still unvaccinated (control group, N = 89). The third experiment (September 2022) tested one message aiming to increase COVID-19 booster uptake among those who received only the first round of vaccination (N = 172; control group, N = 169). The outcome variable in the second and third experiments was intent to get vaccinated. Robust regressions, logit models, Mann-Whitney U-tests and model-based recursive partitioning were run. The inference criteria (p < 0.05) was set in pre-registration of the experiments. RESULTS: All treatment effects were insignificant, but exploratory research found significant conditional treatment effects. Exposure to vaccine promotion by medical professionals was associated with a higher level of trust in Russian and Chinese COVID-19 vaccines in older age cohorts (weighted robust regressions, 50-59 years old, Russian vaccine: +0.769, interaction term [i.t.] p = 0.010; Chinese vaccine: +0.326, i.t. p = 0.044; and ≥60 years old, Russian vaccine +0.183, i.t. p = 0.040; Chinese vaccine +0.559, i.t. p = 0.010) and with a lower level of trust in these vaccines among younger adults (<30 years old, Russian vaccine: -1.236, i.t. p = 0.023; Chinese vaccine: -1.281, i.t. p = 0.022). Receiving a vaccine promotion message from politicians led to a higher level of trust in Chinese vaccines among the oldest respondents (≥60 years: +0.634, i.t. p = 0.035). CONCLUSIONS: Short-term persuasion attempts that aimed to convince respondents about COVID-19 vaccination were ineffective. Booster hesitancy, similar to primary vaccine hesitancy, was resistant to vaccine promotion messages. Significant conditional effects suggest that COVID-19 vaccine promotion by medical experts and politicians may have had adverse effects for some demographic groups in Hungary.