Jörg Matthes

• University of Vienna

Cognitive biases are known to influence how people react to misinformation, and the way they use various strategies to navigate the current media ecosystem. While confirmation bias and the third person effect have been subject to many studies about the effects of misinformation, little is known about the impact of illusory superiority, a self-enhan...

Computer Generated Imagery (CGI) influencers—also known as virtual influencers—are an increasingly influential phenomenon on social media. Some CGI influencers are presented as cartoon characters and are thus clearly recognizable as non-human. Other CGI influencers, however, are almost indistinguishable from real humans. Although CGIs can elicit pa...

Digital hate has become an inevitable aspect of daily life for social media users, constituting a formidable societal challenge. Despite broad consensus of related harms, researchers have struggled to predict users’ intervening activity and moderation preferences, especially given that they are subject to temporal changes. A two-wave panel survey w...

The pursuit of gender equality has permeated social media marketing, manifesting in contrasting approaches like fem-vertising (i.e. ads promoting gender equality) and fem-washing (i.e. ads pretending support for feminism). Despite their growing prevalence, these concepts remain understudied. This research operationalizes both constructs within a be...

The present study investigated observers’ perspectives of smartphone use during social interactions in serious and casual conversational contexts, suggesting gender differences. The results of the between-subjects 2 × 2 experimental study show that female observers perceive lower conversation quality when observing phubbing than male observers, ali...

The mobile app BeReal, launched in 2020, has gained popularity for its emphasis on authenticity, spontaneity, and real-time daily interactions with close ties, earning it the label of “anti-Instagram.” However, empirical evidence on its relationship with well-being is currently lacking. This study uses a quasi-experimental two-wave design to examin...

Political microtargeting practices aim at exposing social media users to political content that aligns with their preferences and interests. Hence, such exposure becomes a personal experience, dependent on individual perceptions. So far, research has rarely investigated young social media users’ personal experiences with targeted political advertis...

Digital hate is typically targeted toward individuals or groups based on distinct attributes. Despite numerous studies on targets of digital hate, there is a lack of a systematic meta-perspective on targets’ perceptions of digital hate. Therefore, this scoping review aims to assess available definitions and characteristics of targets, consequences...

Background With the growing role of social media influencers (SMIs) in providing health advice, concerns arise regarding the usefulness and reliability of online health information. This exploratory research focuses on health expert content creators (HECCs), who offer a unique perspective due to their combined medical knowledge and social media exp...

Swipe-based dating apps characteristically provide quantitative social feedback in the form of matches. Surveys suggest a link between dating app success and well-being, but the nature of this correlation has yet to be examined. In an experiment with 125 undergraduate women, we manipulated dating app feedback: When accepting a profile, participants...

Given that terrorism is omnipresent on social media, it is imperative to study how seeing terror content online is related to individuals’ attitudes, behaviors, and emotions. This study investigates how exposure to terrorism on social media associates with terror-related online self-disclosure and how self-disclosure, in turn, relates to fear of te...

p>Political microtargeting (PMT) is a popular campaign tool in elections worldwide. However, it is associated with democratic risks. Foremost, scholars and policymakers are concerned that citizens cannot cope with PMT and, thus, stand vulnerable to persuasion. To assess this risk, an in-depth understanding of how citizens make sense of and cope wit...

Dating apps have changed the way people establish contact with potential romantic partners. However, more and more dating apps use algorithms to keep their users’ engagement high. Studies suggest that trust in algorithms can shape offline dating experiences. We theorize that excessive swiping, driven by fear of missing out, predicts trust. We also...

In certain cases, children can react strongly in favor of product placements inserted in movies. Scholars therefore argue that existing disclosures might be one strategy in protecting children from any negative effects. However, disclosure research indicates that viewers should both notice disclosures and, in cases of textual cues, read them. We co...

This paper investigates how the acceptance of data-driven political campaigning depends on four different message characteristics. A vignette study was conducted in 25 countries with a total of 14,390 respondents who all evaluated multiple descriptions of political advertisements. Relying on multi-level models, we find that in particular the source...

Differentiation between terrorists and Muslims can mitigate the negative effects of terrorism news. In this study, participants were shown Islamist terrorism news in a quota-based 2 (news: differentiated vs. undifferentiated) × 2 (perpetrator characteristics: insider vs. outsider, that is, a threat from within vs. an alien threat) experiment ( N =...

Political entertainment programs have gained worldwide popularity, prompting research on their effects. One area of interest has been whether this media programming has an impact upon political efficacy. However, existing literature has only examined the impact of a limited number of programs, has failed to consider the simultaneous influence of di...

Purpose Celebrities communicating about environmental sustainability on social media have the power to inspire young adults to engage in pro-environmental behavior, such as reducing their consumption behavior or only buying local and organic food. However, at the same time, celebrities’ carbon-rich and luxurious lifestyles might generate skepticism...

Drawing on theories related to interpersonal and intergroup behavior, this study investigated effects of personality traits (i.e., empathy and identity insecurity) and attitudes (i.e., anti-migration attitudes and social dominance orientation) on the perceived severity of digital hate against immigrants in Austria. Findings of autoregressive path m...

It can be difficult for citizens to discern factually accurate information from mis- and disinformation. Particularly in the context of the Russian invasion of Ukraine, the omnipresence of counterfactual narratives, propaganda, and partisan content may increase the likelihood that citizens select and accept mis -or disinformation. To assess citizen...

Cyberbullying is a highly prevalent phenomenon among emerging adults, and it may lead to severe psychosocial harm for some targets. Understanding how emerging adults can cope with cyberbullying by altering their media use but without risking one of their crucial social lifelines, mobile social media, during the process is essential. To this end, th...

Conventional wisdom suggests that social media, especially when used by authoritarian powers with nefarious aims, leaves citizens of democratic countries vulnerable to psychological influence campaigns. But such concerns overlook predispositions among recipients of false claims to reject (or to endorse) conspiratorial narratives. Analyzing response...

Background Entertainment media content is often mentioned as one of the roots of children’s unhealthy food consumption. This might be due to the high quantity of unhealthy foods presented in children’s media environments. However, less is known about the role of the centrality of food placement, that is, whether foods are interacted with, consumed,...

Fueled by the growing presence of information and communication technologies, digital hate (DH) perpetration poses significant threats. Although a substantial body of research addresses DH perpetration, existing literature lacks conceptual clarity as numerous, somewhat vaguely distinguishable phenomena are being investigated in parallel. This scopi...

The availability of online data has altered the role of social media. By offering targeted online advertising, that is, persuasive messages tailored to user groups, political parties profit from large data profiles to send fine-grained advertising appeals to susceptible voters. This between-subject experiment (N = 421) investigates the influence of...

Dirty campaigning, which is understood as actions between elite politicians that violate social norms and democratic principles, is becoming an increasingly relevant phenomenon across the globe. Despite this development, we know little about which forms constitute dirty campaigning, how citizens perceive dirty campaigning, and how perceived dirty c...

Terrorism has the potential to divide societies. It is particularly relevant to investigate how Islamist terrorism on social media is associated with Muslim minorities’ attitudes and behaviors. This study examined how seeing terrorism on social media relates to Muslim minority individuals’ perceived stigmatization. We further investigated how perce...

Despite increasing academic attention, several ques-tions about fact-checking remain unanswered. First, it remains unclear to what extent fact-checks are effective across different political and media contexts. Second, we know little on whether features of the fact-check itself influence its success. Conducting an experiment in 16 European countrie...

With the present study we investigated the role of channel characteristics in regard to gender role portrayals in television advertisements. Drawing on cultivation theory and social cognitive theory, we investigated six key variables in this line of research. We sampled a total of N = 1022 advertisements from four Austrian television channels: a pu...

Political parties increasingly rely on sophisticated targeting strategies to persuade potential voters. However, questions have been raised about the effectiveness of targeted political ads, considering that citizens frequently oppose the use of their data for political purposes. In this study, we investigate three avoidance behaviors that citizens...

The recent surge of false information accompanying the Russian invasion of Ukraine has re-emphasized the need for interventions to counteract disinformation. While fact-checking is a widely used intervention, we know little about citizen motivations to read fact-checks. We tested theoretical predictions related to accuracy-motivated goals (i.e., se...

Social media, as an important resource of information for many contentious topics, has great affective potential in terms of anger and fear. We investigated how exposure to news about refugees on social media is related to negative attitudes toward refugees as well as attitudinal differentiation with respect to Muslims and terrorists. A two‐wave pa...

Right-wing extremist (RWE) violence and terrorism pose a severe threat to Western societies, including Germany. This study tests how differences in journalistic descriptions of minority and majority victims of such attacks affect news readers. Building on social identity theory, we conducted a 2 (nationality: German, Turkish) × 2 (humanization, no...

In information environments characterized by institutional distrust, fragmentation and the widespread dissemination of conspiracies and disinformation, citizens perceive misinformation as a salient and threatening issue. Especially amidst disruptive events and crises, news users are likely to believe that information is inaccurate or deceptive. Usi...

While the role of social media in the spread of conspiracy theories has received much attention, a key deficit in previous research is the lack of distinction between different types of platforms. This study places the role of social media affordances in facilitating the spread of conspiracy beliefs at the center of its enquiry. We examine the rela...

Misinformation often involves sensitive topics, and individuals may attempt to correct their peers using uncivil tones. We examined the effect of civil versus uncivil corrections on the perceived success of the correction and the reported relationship consequences. We used three-wave panel data consisting of 1513 participants in the first wave, and...

During the COVID-19 pandemic, researchers have faced a lot of challenges related to their daily work. This article introduces a special issue of the American Behavioral Scientist, which particularly focuses on methodological challenges caused by the COVID-19 pandemic. Based on a brief review of the literature as well as the studies in this issue, w...

The hostile media phenomenon (HMP) refers to a process in which supporters and opponents of an issue perceive the identical coverage to be biased against their own views. Despite the relevance of visual communication in our field, scholars have treated hostile media perceptions as a text-based phenomenon ignoring the unique role of visuals. This pa...

During early adolescence children are increasingly using their smartphones not only throughout the day, but also before or even during the nighttime. Prior research has revealed that children’s school performance might suffer because of late-night smartphone use. To gain a further understanding of the consequences of nighttime smartphone use on sch...

Reflective smartphone disengagement (i.e., deliberate actions to self-regulate when and how one should use one's smartphone) has become a necessary skill in our ever-connected lives, contributing to a healthy balance of related benefits and harms. However, disengaging from one's smartphone might compete with impulsive psychosocial motivators such a...

There are rising concerns that social network sites (SNS) facilitate the creation of echo chambers, in which attitude-consistent information becomes the norm while attitude-challenging information is avoided. This study aims to investigate theoretically derived predictors of attitude-consistent and attitude-challenging exposure on SNS. We theorize...

Employing a mobile experience sampling design, we investigated in the present study how different types of mobile social media use relate to young individuals’ momentary affective well-being and momentary loneliness. We differentiated between three types of social media use: Messaging, posting, and browsing. Moreover, we studied fear of missing out...

Targeted political advertising (TPA) on social media builds on tailoring messages to (groups of) individuals’ characteristics based on user data. Questions have been raised about the impact of TPA on recipients and society. In this study, we focus on the fit of TPA, that is, the congruence between TPA and recipients’ preferences, and draw on congru...

Background In modern audiovisual media, children are confronted with an endless stream of food advertising. Thus, companies can undermine parents' best efforts to feed their children healthy foods. Indeed, parents often describe that their children request specific foods depicted in media, most of which are high in fat, salt, and/or sugar. Objecti...

Studies showed adverse experiences related to the use of dating applications such as Tinder. However, it remains unclear by which mechanism and under which conditions dating app use has undesired effects. As a mechanism, we investigated excessive swiping, operationalized as youth’s mental preoccupation with profile browsing and swiping compulsivity...

Ghosting (i.e., terminating communication with another person on social media without explanation) has become an all-too-common occurrence. Prior scholarship has predominantly focused on adverse effects of being ghosted on individuals’ well-being and mainly investigated the phenomenon within romantic relationships. By contrast, its occurrence withi...

Given how strongly social media is permeating young people’s everyday lives, many of them have formed strong habits that, under specific circumstances, can spiral out of control and bring harmful experiences. Unlike in extant literature where habitual and compulsive behaviors are often conflated, we report findings from a two-wave panel study exami...

There are grounds to assume that the use nonpolitical, entertainment-oriented Social Media (SM) may dampen democratically relevant outcomes. However, research has largely ignored the political effects of such entertainment-oriented SM content as well as its interaction with exposure to political SM content. Based on the distinction between politica...

As a consequence of children’s nearly ubiquitous smartphone use, many parents experience resignation or frustration due to a perceived loss of control over their child’s excessive smartphone activities. This perceived lack of control may not only increase children’s risk of exposure to online harassment but also affect the relationship between pare...

Data suggests that the majority of citizens in various countries came across ‘fake news’ during the COVID-19 pandemic. We test the relationship between perceived prevalence of misinformation and people’s worries about COVID-19. In Study 1, analyses of a survey across 17 countries indicate a positive association: perceptions of high prevalence of mi...

Uncivil campaigning and deceitful campaign techniques are increasingly relevant phenomena in politics. However, it remains unclear how they share an underlying component and how partisanship can influence their associations with democratic outcomes. We introduce the concept of dirty campaigning, which is situated at the intersection of research on...

Many adolescents and young adults spend countless hours a day on social media, where they can engage with social media influencers and may establish parasocial relationships (PSRs) with them. Recently, “green” influencers (“greenfluencers”), who post content on the topic of sustainability, have emerged. Yet, it is unclear whether adolescents' and y...

Mobile social media have become a widespread means to participate in everyday social and professional life. These platforms encourage the disclosure and exchange of personal information, which comes with privacy risks. While past scholarship has listed various predictors and consequences of online privacy concerns, there has been to date no empiric...

A widely believed claim is that citizens tend to selectively expose themselves to like-minded information. However, when individuals find the information useful, they are more likely to consume cross- cutting sources. While crises such as terror attacks and pandemics can enhance the utility of cross-cutting information, empirical evidence on the ro...

This article seeks to explain the longitudinal associations of taking the smartphone to bed on adolescents’ daytime tiredness and physical well-being. We examined whether parents’: (a) active mediation; and (b) restrictive mediation determines whether children and adolescents have their phones within reach in bed or not. We used longitudinal data f...

Studies showed adverse psychological effects related to the use of dating applications such as Tinder. However, it remains unclear by which mechanism and in which conditions dating app use has undesired effects. As a mechanism, we investigated excessive swiping, operationalized as youth’s mental preoccupation with profile browsing and swiping compu...

Islamist terrorist attacks and existing terror threat can seriously affect intergroup relations and policy making. Drawing on hostile media effect theory and intergroup threat theory, we hypothesized that perceived threat of terror influences perceived news media bias in favor of Muslims as well as support for surveillance policies that are perceiv...

Social media influencers promote not only products and brands but also their opinions on serious topics like party politics or climate change. These so-called digital opinion leaders may exert a powerful impact on their followers’ political attitudes. Accordingly, we explore new directions to explain how influencers’ communication is related to pol...

With the increasing availability of big digital voter data, there are rising concerns that online political micro-targeting (PMT) may be harmful for democratic societies. However, PMT may also be beneficial to democracy because it targets voters with content that matches with their predispositions, potentially increasing political interest. For bot...

In the last two decades, communication research dedicated substantial attention to the effects of incidental exposure (IE) to political information. In this meta-analysis, we analyzed the relationship of IE and five outcomes relevant for democracies. Including 106 distinct samples with more than 100,000 respondents, we observed positive cross-secti...

Today, the internet and particularly social media offer lots of opportunities to encounter political information incidentally. Motivated by conflicting findings regarding the effects of incidental exposure (IE) on political outcomes, researchers recently developed new theoretical models. Building on the Political Incidental News Exposure (PINE) mod...

Political advertising on social media heavily capitalizes on the fact that citizens leave behind data traces through their online behaviors. Even though this allows parties to target citizens based on their age, gender, or even specific interests, there is often a mismatch between the parties and the individuals’ party preferences. This study inves...

Purpose Scholars have expressed great hopes that social media use can foster the democratic engagement of young adults. However, this research has largely ignored non-political, entertainment-oriented uses of social media. In this essay, I theorize that social media use can significantly dampen political engagement because, by and large, young adul...

The COVID-19 pandemic is one of the biggest crises of the 21st century. This paper investigates the role of reactance-based perceptions of threatening government communication on (1) attitudinal outcomes regarding acceptance of the COVID-19 health protection measures and (2) behavioral outcomes regarding adherence to the COVID-19 measures. From a t...

When the COVID-19 pandemic began, in early 2020, lockdowns limited the options for physical intimacy and many resorted to technology-mediated forms of intimacy such as sexting. However, it is unclear what predicted willingness to engage in sexting during the lockdown. The present study filled this gap by investigating COVID-19-related social isolat...

This volume offers a wide range of insights into current media reception and effects research on the topic of ‘sustainability’. The contributions it contains deal with how this topic is communicated and negotiated on (social) media, how various message and context features affect sustainable behaviour, and what role established and ‘new’ actors—suc...

For many individuals, the media function as a primary source of information about preventative measures to combat COVID-19. However, a considerable number of citizens believe that the media coverage about pandemics is exaggerated. Although the perception of media exaggeration may be highly consequential for individual health behaviors, we lack rese...

Considering that insufficient sleep has long been regarded as a significant public health challenge, the COVID-19 pandemic and its co-evolving infodemic have further aggravated many people's sleep health. People's engagement with pandemic-related news, particularly given that people are now permanently online via smartphones, has been identified as...

Due to 'stay-at-home' measures, individuals increasingly relied on smartphones for social connection and for obtaining information about the COVID-19 pandemic. In a two-wave panel survey (N T2 = 416), we investigated associations between different types of smartphone use (i.e., communicative and non-communicative), friendship satisfaction, and anxi...

Alternative digital media typically provide a counter-public sphere by opposing the contents generated by the mainstream media as well as political elites. While previous research has mainly explained the usage of alternative digital media, we particularly lack research on its association with key political outcomes relevant to democracy. Using two...

Citizen science research has been rapidly expanding in the past years and has become a popular approach in youth education. We investigated key drivers of youth participation in a citizen social science school project and the effects of participation on scientific and topic-related (i.e., political) interest and efficacy. Findings suggest that fema...

The present paper develops a new concept, called Reflective Smartphone Disengagement (RSD), defined as individuals’ deliberate efforts to control and restrict smartphone use. Based on the reflective-impulsive model, we examined the RSD concept in four studies, using cross-sectional data of adolescents (Study 1, n = 453, Study 3, n = 760) and adults...