"I am Young, Why Should I Vaccinate?" How empathetic and aggressive communication on social media impact young adults' attitudes toward COVID-19 vaccination.

Introduction: To combat the current COVID-19 pandemic, high vaccination rates are of crucial value. However, young people in particular tend to be hesitant toward vaccination. On social media, young adults are often called to vaccinate in an aggressive tone, arguing that there is no choice than to vaccinate and that all else is wrong. Methods: In an experimental study (N = 410), we investigated the effects of (a) empathetic vs. aggressive communication styles in social media postings and (b) the origin of the communicator on young adults' supportive attitudes toward COVID-19 vaccinations. We treated the gender of the communicator as a moderator, and expectancy violation, psychological distance as well as the perceived credibility of the communicator as mediators. Results: Findings showed that an aggressive communication style generally had a negative impact on young adults' COVID-19 vaccination attitudes, fully mediated by expectancy violation and perceived credibility of the communicator. Gender and the origin of the communicator did not moderate this mediation processes. Discussion: Further implications for online health communication strategies are discussed.

Fear of Missing Out, Reflective Smartphone Disengagement, and Loneliness in Late Adolescents.

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 as fear of missing out (FoMO) on others' rewarding experiences or feelings of loneliness. To shed light into these competitive processes, the present paper disentangles the reciprocal, over-time relationships between reflective smartphone disengagement, FoMO, and loneliness using data from a two-wave panel study among emerging adults (16-21 years of age). Measurement-invariant structural equation modeling suggests that FoMO and reflective smartphone disengagement negatively predict each other over time, indicating a possible spiraling process. In addition, reflective smartphone disengagement was also negatively related to feelings of loneliness. Together, these findings underline (a) how young people's impulsive and reflective system compete with each other over control of their smartphone usage, where (b) psychosocial benefits of reflective smartphone disengagement were validated among emerging adults, potentially helping them to strengthen the benefits and limit the harms of permanent interactions with and through technology.

I spy with my little eye: An eye-tracking study examining adolescents' attention to alcoholic and non-alcoholic beverages in Instagram stories.

Social media users are frequently exposed to alcohol images on Instagram, which in turn influences their own alcohol behaviors. Yet, it is unclear what factors drive attention to alcohol cues. In an eye-tracking study (N = 108; Mage = 16.54), we examined adolescents' attention to Instagram Stories depending on: (a) the type of beverage depicted (beer vs water), (b) the character-product interaction portrayed (CPI: peers in images shown consuming [high CPI] vs holding beverages [low CPI]) and, (c) participant's own susceptibility (high vs low-risk alcohol drinker). Our results illustrated that adolescents allocated an equal amount of attention to beer and water depicted in Instagram images. Furthermore, they devoted more attention to Instagram images wherein peers were shown consuming water and beer (high CPI) compared to those wherein peers were holding these beverages (low CPI). Surprisingly, high-risk alcohol drinkers were more responsive to both beer and water cues than low-risk drinkers. This was particularly the case for Instagram images with high CPI. These findings have implications for how health cues on Instagram are attended to and processed.

Utopian or dystopian? The portrayal of the metaverse in popular news on social media.

The metaverse has sparked lots of interest worldwide as many giant tech companies are pursuing this futuristic idea. However, it has not been properly studied empirically by social science scholars yet. Considering the vital role played by media frames in affecting people's attitudes and behaviors towards the technology, this study examined the framing of the metaverse in popular news across Social Network Sites (SNSs) by cluster analyzing Entman's four operational frame elements. It identified five frames: economic prospect frame, unwanted future frame, consumer prospect frame, threatening future frame, and probable future frame. Overall, findings suggest a polarized framing of the metaverse on social media. While the majority of voices about the metaverse are optimistic, there is also a strong negative and dystopian perspective in more than one third of the SNS news. This positive or negative one-sided framing of the metaverse on SNSs may therefore fragmentize and polarize the audience, rather than informing in a balanced way. Implications for future research are discussed.

A Novel Plenoptic Camera-Based Measurement System for the Investigation into Flight and Combustion Behavior of Refuse-Derived Fuel Particles.

In the past several decades, refuse-derived fuels (RDFs) have been widely applied in industrial combustion processes, for instance, in cement production. Since RDF is composed of various waste fractions with complex shapes, its flight and combustion behaviors can be relatively complicated. In this paper, we present a novel plenoptic camera-based spatial measurement system that uses image processing approaches to determine the dwell time, the space-sliced velocity in the depth direction, and the ignition time of various applied RDF fractions based on the obtained images. The image processing approach follows the concept of tracking-by-detection and includes a novel combined detection method, a 2.5D multiple particle tracking algorithm, and a postprocessing framework to tackle the issues in the initial tracking results. The thereby obtained complete spatial fuel trajectories enable the analysis of the flight behaviors elaborated in the paper. The acquired particles' properties (duration, velocity, and ignition time) reversely prove the availability and applicability of the developed measurement system. The adequacy and accuracy of the proposed novel measurement system are validated by the experiments of detecting and tracking burning and nonburning fuel particles in a rotary kiln. This new measurement system and the provided experimental results can benefit a better understanding of the RDF's combustion for future research.

What can stop the 'pester power'? A longitudinal study on the impact of children's audiovisual media consumption on media-motivated food purchase requests.

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. OBJECTIVES: Longitudinal research on the factors influencing media-motivated food purchase requests remains scarce. METHODS: In a panel study, pairing data of N = 529 children (6-11 years) and one of their parents (N = 529), we examined how children's individual factors (i.e., age and body mass index [BMI]), their audiovisual media consumption, and different parental mediation styles are associated with parents' perceptions of children's media-motivated food purchase requests. RESULTS: While age was negatively related and children's BMI positively related to children's media-motivated food purchase requests, we found no overall effect of children's audiovisual media consumption. Interestingly, talking with children about foods during or after viewing (i.e., conversation-oriented communication about foods depicted in media) increased media-motivated food purchase requests, most likely by fostering the cognitive availability of food products. Restrictive media mediation exerted a negative effect (i.e., reduced purchase requests). CONCLUSIONS: Findings suggest that restricting exposure to food advertising in the media may be more powerful in stopping the 'pester power' than previously thought. Thus, policy-supporting restrictions on depicting unhealthy foods in media content targeted at children may be helpful.

You are not alone: Smartphone use, friendship satisfaction, and anxiety during the COVID-19 crisis.

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 Time2 = 416), we investigated associations between different types of smartphone use (i.e., communicative and non-communicative), friendship satisfaction, and anxiety during the first lockdown in Austria. Our findings revealed that communicative smartphone use increased friendship satisfaction over time, validating how smartphones can be a positive influence in difficult times. Friendship satisfaction decreased anxiety after one month, signaling the importance of strong friendship networks during the crisis. Contrary to our expectations, non-communicative smartphone use had no effects on friendship satisfaction or anxiety over time. Reciprocal effects showed that anxiety increased both types of smartphone use over time. These findings are discussed in the context of mobile media effects related to the COVID-19 pandemic.

Love in the Time of Corona: Predicting Willingness to Engage in Sexting During the First COVID-19-Related Lockdown.

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 isolation, privacy concerns, age, and gender as predictors of willingness to engage in sexting. We further examined an interaction of COVID-19-related social isolation and privacy concerns on willingness to engage in sexting. We conducted online surveys with 494 young adults (Study 1) and with a quota-based sample of 437 adults (Study 2) in Austria. In both studies, negative binomial regressions revealed a positive effect of COVID-19-related social isolation on willingness to engage in sexting. Privacy concerns hindered young adults in Study 1 from engaging in sexting but not relatively older adults in Study 2. However, in neither study did privacy concerns moderate the effect of COVID-19-related social isolation on willingness to engage in sexting: Even individuals with high privacy concerns were more willing to sext under conditions of social isolation, suggesting that the need for intimacy outweighed the need for privacy protection. Gender had no effect in either study, indicating that men and women used sexting to cope with the unprecedented COVID-19-related situation.

The COVID-19 infodemic at your fingertips. Reciprocal relationships between COVID-19 information FOMO, bedtime smartphone news engagement, and daytime tiredness over time.

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 many people are now permanently online via smartphones, has been identified as a critical factor for sleep health, such that public health authorities have recommended limited news exposure. This two-wave panel survey, conducted with a representative sample in Austria during its first COVID-19 lockdown, examines (a) how fear of missing out on pandemic-related news (i.e., COVID-19 information FOMO) is reciprocally related to smartphone-based bedtime news engagement, as well as (b) how both bedtime news engagement and COVID-19 information FOMO predict daytime tiredness. Partial metric measurement invariant structural equation modeling revealed that COVID-19 information FOMO and bedtime news engagement are reciprocally associated over time, indicating a potentially harmful reinforcing loop. However, results further suggested that COVID-19 information FOMO may be the primary driver of daytime tiredness, not smartphone-based bedtime news engagement. These findings suggest that a perceived loss of (informational) control over the pandemic outbreak more strongly than poor sleep habits accounts for depleted energy resources during lockdown. However, given the initial evidence for a reinforcing loop, this effect pattern may change in the long term.

Trust in Science, Perceived Media Exaggeration About COVID-19, and Social Distancing Behavior.

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 research on the drivers and consequences of this perception. In a two-wave panel study, we examined associations between trust in science, perceptions of media exaggeration about COVID-19, and social distancing behavior during the lockdown in Austria (NT2 = 416). Results showed that trust in science at T1 led to less perceptions of media exaggeration about COVID-19 at T2. Furthermore, consistent with the theory of psychological reactance, perceptions of media exaggeration about COVID-19 at T1 caused less social distancing behavior at T2. Thus, findings suggest that trust in science may positively affect individuals' social distancing behavior by decreasing perceived media exaggeration about COVID-19 over time. Implications for research on media effects in times of COVID-19 and conclusions for journalists are discussed.

Shaping Healthy Eating Habits in Children With Persuasive Strategies: Toward a Typology.

There is an abundance of evidence that the presentation of unhealthy foods (UHFs) in different media has the power to shape eating habits in children. Compared to this rich body of work with regard to the effects of UHF presentations, studies testing the effects of healthy foods (HFs) are less conclusive. In particular, while the persuasive mechanisms behind HF presentations are well-understood, we lack insights about the role of messages factors, that is, how are (and should) HFs (be) presented in order to foster healthy eating habits in children. This paper tackles this research gap by suggesting the Persuasive Strategies Presenting Healthy Foods to Children (PSPHF) typology, classified along three pillars: (a) composition-related characteristics, (b) source-related characteristics, and (c) information-related characteristics. Against the background of the PSPHF typology, we review the available empirical evidence, outline pressing research gaps, and discuss implications for researchers, health promoters, and program planers.

Longitudinal Relationships Among Fear of COVID-19, Smartphone Online Self-Disclosure, Happiness, and Psychological Well-being: Survey Study.

BACKGROUND: Given that governmental prevention measures restricted most face-to-face communications, online self-disclosure via smartphones emerged as an alternative coping strategy that aimed at reducing the impact of the COVID-19 pandemic on people's psychological health. Prepandemic research demonstrated that online self-disclosure benefits people's psychological health by establishing meaningful relationships, obtaining social support, and achieving self-acceptance, particularly in times of crisis. However, it is unclear whether these dynamics transition well to lockdown conditions where online self-disclosure must stand almost entirely on its own. Longitudinal investigations are needed to gain insights into the psychological functionalities of online self-disclosure during the COVID-19 pandemic. OBJECTIVE: This study aimed to determine the temporal associations between smartphone online self-disclosure (as a communicative behavior) and critical indicators of psychological health (including psychopathological, as well as hedonic and eudaimonic states) during the first COVID-19 lockdown in Austria. METHODS: We conducted a representative 2-wave panel survey between late March/April 2020 and May 2020. A total of 416 participants completed both waves (43.1% attrition rate, given n=731 participants who completed the first wave). A partially metric measurement invariant overtime structural equation model was used to determine the temporal associations among online self-disclosure, fear of COVID-19, happiness, and psychological well-being. RESULTS: The analysis revealed that fear of COVID-19 significantly predicted online self-disclosure over time (b=0.24, P=.003) and happiness over time (b=-0.14, P=.04), but not psychological well-being (b=0.03, P=.48), that is, stronger COVID-19 fears at T1 prompted more online self-disclosure and less happiness at T2. Online self-disclosure, on the other hand, significantly predicted happiness (b=0.09, P=.02), but neither fear of COVID-19 (b=-0.01, P=.57) nor psychological well-being (b=-0.01, P=.57) over time. Participants who engaged more strongly in online self-disclosure at T1 felt happier at T2, but they did not differ from less-disclosing participants concerning COVID-19 fears and psychological well-being at T2. Importantly, happiness and psychological well-being were significantly related over time (happiness T1 → psychological well-being T2: b=0.11, P<.001; psychological well-being T1 → happiness T2: b=0.42, P<.001). CONCLUSIONS: Our findings suggest that online self-disclosure might play a pivotal role in coping with pandemic stressors. With restrictions on their options, individuals increasingly turn to their smartphones and social media to disclose their feelings, problems, and concerns during lockdown. While online self-disclosure might not alleviate fears or improve psychological well-being, our results demonstrate that it made people experience more happiness during this crisis. This psychological resource may help them withstand the severe psychological consequences of the COVID-19 crisis over longer timeframes.

"Context, Please?" The Effects of Appearance- and Health-Frames and Media Context on Body-Related Outcomes.

Promoting health-related behaviors such as healthy eating or doing sports are important to counteract the problem of obesity, which is on the rise. In this regard, initial studies suggest that appearance compared to health framing can lead to negative body-related outcomes in young women. This study aimed to extend these findings by investigating the role of the context. Furthermore, as previous studies focused on young women only, we considered a more diverse sample. This seems especially important as health campaigns focusing on healthy eating and sports should appeal to a more diverse population. This experimental study (N = 286) follows a 2 (appearance frame vs. health frame) × 2 (social media vs. magazine website) between-subjects design. Results revealed that exposure to appearance-focused framing led to a lower positive mood compared with exposure to health-focused framing. These effects were most prevalent in overweight and obese participants. Moreover, participants in the social media condition showed lower body satisfaction and lower positive mood compared with participants in the magazine website condition independent of the frame. No other interaction effects occured. Overall, health promoters should focus their campaigns on the health aspects of health-related behaviors and should consider promotion on social media platforms. Also, they should keep in mind that not only the framing, but also the context, might have effects on body-related outcomes.

Healthwashing in high-sugar food advertising: the effect of prior information on healthwashing perceptions in Austria.

In the context of exceeding levels of sugar consumption, some food companies advertise high-sugar products using inappropriate and misleading health claims (i.e. healthwashing). To reduce sugar consumption, consumers need to recognize what these healthwashed claims are. This study investigates how prior sugar-related health information moderates the effect of exposure to healthwashed advertisements (ads) on healthwashing perceptions and how such perceptions are related to attitudes towards product consumption. We conducted a 2 × 2 online experiment with 292 adult participants in Austria. We manipulated the presence of healthwashing and participants' prior sugar-related health information. The results indicated that exposure to healthwashed ads increased healthwashing perceptions only when the participants received additional health information prior to ad exposure, whereas no significant effect was found when the participants did not receive such prior health information. Healthwashing perceptions were then negatively related to individuals' attitudes towards product consumption. Based on these results, the study suggests that public access to health-related information might play an important role in empowering consumers to detect inappropriate health claims and become more critical towards food companies' underlying strategies in ads.

Experts, peers, or celebrities? The role of different social endorsers on children's fruit choice.

This study investigates whether the source providing nutritional information matters for children's choice of fruit over candy. We conducted a between-subject experimental study with children (6-11 years; Mage = 8.20; N = 340). Children watched an audiovisual cartoon with nutritional messages provided by experts (expert condition), by celebrities (celebrity condition), or by typical consumers (peer condition). Additionally, we included a control group in which children were not exposed to any cartoon. As the dependent variable, we measured children's fruit choice over candy. As a mediator, measuring message processing we included children's argument awareness. Children's age was included as a moderator. The results indicate that the experimental conditions were equally effective in creating argument awareness for healthy eating compared to the control group. Children's argument awareness was generally rather low, and it did not influence children's fruit choice over candy. Nevertheless, there was a direct effect of the expert condition on children's fruit choice, pointing to an internalized "expert heuristic". No moderating effects of children's age were present. Our study indicates that using experts to present nutritional information within narrative media content is a potentially successful strategy to create argument awareness for healthy food and to impact children's selection of healthy food whereas peer and celebrity social endorsers are not.

Fiction Is Sweet. The Impact of Media Consumption on the Development of Children's Nutritional Knowledge and the Moderating Role of Parental Food-Related Mediation. A Longitudinal Study.

Nutritional knowledge is an important cognitive facilitator that potentially helps children to follow a healthy diet. Two main information agents influence children's development of nutritional knowledge: the media and their parents. While a high amount of media consumption potentially decreases children's nutritional knowledge, parents may shape the amount of information children can gather about nutrition through their food-related mediation styles. In addition, children's individual preconditions predict how children can process the provided nutritional information. This two-wave panel study with children (N = 719; 5-11 years) and their parents (N = 719) investigated the main effects and interplay of children's amount of media consumption and their parents' food-related mediation styles by performing linear regression analysis. Children's individual preconditions were also considered. We measured children's self-reported amount of media consumption, children's age, sex, weight, and height (BMI). Additionally, in a parent survey we asked parents about how they communicate their rules about eating while especially focusing on active and restrictive food rule communication styles. As a dependent measure, we examined children's nutritional knowledge at Time 1 and 2. The results show that the amount of media consumption has a negative effect on children's nutritional knowledge over time. Parents' restrictive or active food-related mediation asserted no main effects and could not lever out the negative effect of the amount of media consumption. Therefore, we argue that parents should limit children's amount of media consumption to avoid the manifestation of misperceptions about nutrition.

The effects of gain- and loss-framed nutritional messages on children's healthy eating behaviour.

OBJECTIVE: Despite extensive research on framing effects in public health communication, there is still a lack of knowledge on how gain frames v. loss frames can encourage healthy eating behaviour among children. DESIGN: Drawing on the Prospect Theory as well as on the Reactivity of Embedded Food Cues in Advertising Model, an experiment exposed children to an audio-visual cartoon movie with gain-framed nutritional messages about eating fruit (gain condition), loss-framed nutritional messages about eating fruit (loss condition) or a message without any food (control group). Children's fruit intake was measured as the dependent variable. Children's awareness of gain- and loss-framed arguments was treated as mediators, while children's age and parents' self-reported food-related mediation styles were modelled as moderators. SETTING: Vienna, Austria, in 2018. PARTICIPANTS: Children aged 6-10 years (N 161). RESULTS: Children in the gain frame group were more aware of gain-framed arguments, and children in the loss frame group were more aware of loss-framed arguments than those in the control group. However, only the mediator awareness of gain-framed arguments increased fruit intake. Additionally, there was a direct effect of the gain-framed message on fruit intake compared to the control group. The loss condition did not reveal such an effect. Neither parent's food-related mediation styles nor children's age moderated those results. CONCLUSION: Gain-framing seems to be more effective in influencing children's healthy food choices compared to loss-framing. Implications for health communication strategies aimed at children are discussed.

A "Forbidden Fruit Effect": An Eye-Tracking Study on Children's Visual Attention to Food Marketing.

Obesity in children is an international health concern. Against this background, there is an increasing interest in understanding how healthy and unhealthy food marketing in narrative media can affect children. In particular, children's implicit reactions, such as visual attention and emotional arousal, are far from being sufficiently understood. We conducted an eye-tracking study, presenting children one of two versions of a narrative media-stimulus, either presenting an unhealthy food (i.e., candy condition; N = 34), or a healthy food (i.e., fruit condition; N = 34). As dependent variables, we investigated dwell time (i.e., visual attention) and pupil dilation (i.e., emotional arousal). As moderators, we included children's prohibition of candy at home and children's level of BMI in our models. Our results indicate that mean dwell time did not differ between conditions and that the moderators did not exert any effect. Moreover, pupil dilation did not differ between conditions but was moderated by parents' candy prohibition at home (ηp2 = 0.080). The results show that children who are not allowed to consume candy at home react with higher emotional arousal when exposed to candy placements than children allowed to eat candy at home. Thus, depending on children's contextual factors, children react differently to unhealthy food cues.

Food as an eye-catcher. An eye-tracking study on Children's attention to healthy and unhealthy food presentations as well as non-edible objects in audiovisual media.

BACKGROUND: Food presentations within media content are often made responsible for todays' obesity epidemic. This assessment is based on the assumption that food presentations create cue reactivity, which in turn affects the amount of food intake. OBJECTIVE: This study investigates children's implicit reactions (cue reactivity) toward healthy, unhealthy, and non-ediblel objects. METHODS: We conducted an experimental eye-tracking study comparing children's cue reactivity assessed with visual attention toward healthy and unhealthy food presentations, as well as non-edible objects. We controlled for the role of children's hunger, body mass index (BMI), and age. RESULTS: Results indicated no difference between healthy and unhealthy food presentations, yet food generally aroused more visual attention in children compared to non-edible objects. Explicit memory for the embedded foods or objects was mediated through visual attention. However, unhealthy food presentations also directly affected children's explicit memory. CONCLUSIONS: Compared to non-edible objects, food presentations seem to be eye-catchers that immediately grab children's attention and they are also able to maintain this attention. Yet, for unhealthy food presentations, memory seems to be less dependent on visual attention. That is, compared to healthy products or non-edible objects, unhealthy food presentations do not require the same amount of visual attention in order to be remembered.

The Forbidden Reward. The Emergence of Parent-Child Conflicts About Food Over Time and the Influence of Parents' Communication Strategies and Feeding Practices.

One of the most critical arenas for conflicts between parents and their children relates to food. Although parent-child conflicts about food are a real occurrence, this form of parent-child interaction has been rarely examined. Given the special role of parents in shaping children's diet, we especially focus on the impact of parental measures. This study investigates how parental communication strategies (i.e., active vs. restrictive) and feeding practices (i.e., overt control vs. covert control) affect the emergence of parent-child conflicts about food over time. Based on previous research, we assessed overt control through parents' use of food as a reward and restriction of their children's access to specific food types. We explored the impact of our predictors on both conflicts about unhealthy and healthy food with a two-wave panel study including parents and their children (N = 541; children aged between 5 and 11) in Austria between fall 2018 and spring 2019. Results of two multiple linear regressions indicated that predominantly parents' use of unhealthy food as a reward is connected to both healthy and unhealthy food conflicts. Furthermore, inconsistent parental educational styles increased the respective conflict potential. Active food-related mediation and covert control did not relate to food-related conflicts about unhealthy and healthy food. Parents' increased use of overtly controlling and restrictive feeding practices might not be only counterproductive for children's diet but also for food-related parent-child interactions. Instead, a "health discourse" (i.e., active food-related mediation) might prevent food-related conflicts and foster a healthy growth in the future.