Food for thought: Reinforced learning and recall of physical activity calorie equivalent (PACE) and numerical calorie content in an associative learning task.

Calorie overconsumption has been proposed as a critical contributing factor to rising obesity rates. To combat this health issue, governments and policymakers have suggested implementing numerical caloric content labels. Alternatively, physical activity calorie equivalent (PACE) labels are being proposed as an easier-to-understand metric, representing the amount of physical activity required to burn off calorie content. This study examined individuals' ability to correctly estimate either the numerical caloric content or the PACE values of food images in an associative learning task. Moreover, it assessed whether this knowledge was learned and retained over time. One hundred and ninety-one participants were instructed to estimate either the numerical caloric content or PACE values of thirty food images. To facilitate learning, feedback on the correct number of calories or PACE values was provided during the first session (Time 1). To assess retention, people re-estimated numerical caloric content or PACE values of the same food pictures three days later (Time 2) and seven days later (Time 3), where feedback was not provided. Results showed that participants in both groups improved their estimations using feedback, with people being consistently more accurate when estimating numerical calorie content. Yet, our results also suggest that participants consolidated their knowledge of PACE values over time. Finally, our findings show that hunger moderates individuals' estimation ability, where hungrier people are less accurate than satiated ones. The results contribute to our understanding of how consumers process, estimate, and learn PACE labels versus numerical caloric content, and provide valuable information for researchers and policymakers to develop and implement nutritional labels as a health strategy.

The impact of nutritional labeling on adult snack choices: A controlled field experiment in a non-commercial professional setting.

Each year, 2.8 million people die because of comorbidities associated with being overweight. Snacking substantially contributes to people's calorie intake. One way to nudge consumers towards healthier alternatives is the implementation of nutritional labeling. This study reports on a controlled field experiment that evaluates the effect of two nutritional labels on free snack choices (n = 739). Participants at a conference could choose between nuts, cookies, and candy bars as a snack, presented at the bar at six different locations across 2 bar counters. The labels were set up in front of each snack in three conditions: no labeling (control), a calorie label, or a traffic light label (i.e., the Nutri-Score). The location of the snacks on the counter (Either side of the counter; Center, Right, Left) and the time-of-day (Morning (=reference) vs Afternoon) were statistically controlled for. The results show that calorie labels could not successfully nudge consumers toward healthier snack choices (nuts instead of candy bars or cookies). In contrast, the Nutri-Score label significantly increased the probability of choosing nuts over candy bars. The Nutri-Score also increased the chance of choosing nuts over cookies, but the difference was not significant. No prior studies to our knowledge have directly compared calorie labels to the Nutri-Score. This study suggests that the Nutri-Score label can be a more successful intervention than calorie labels to nudge consumers towards healthier choices in situations were free snacks are offered, like many modern workplaces. Changing snacking behavior is challenging and naturalistic field experiments like this one are needed to translate the theory from previous laboratory studies to real-life settings.

High hopes for front-of-pack (FOP) nutrition labels? A conjoint analysis on the trade-offs between a FOP label, nutrition claims, brand and price for different consumer segments.

An increasing number of studies investigate the effect of front-of-pack (FOP) nutrition labels on consumer choice without considering differences in consumer preferences for product attributes. This study used a choice-based conjoint analysis to test consumers' preferences for four product attributes (5 levels of a FOP nutrition label, absence/presence of a nutrition claim, brand (unfamiliar, private label or premium) and 5 levels of price) when they coexist (n = 1156). As the consumer preferences showed distinct patterns (multimodality), consumers were subsequently clustered based on how a FOP nutrition label (Nutri-Score) influenced their food choices. Three consumer segments were identified, each valuing the Nutri-Score label differently. The label effectively seems to nudge one segment toward healthier choices (n = 456), while in contrast, another segment is unexpectedly steered toward unhealthier food choices by the label (n = 343). The third segment is only consistently nudged by the FOP label's extremes (n = 357). The segments also differ in their preferences for other product attributes (brand and price), health involvement, and self-reported understanding and use of the Nutri-Score, but not in the measured socio-demographic variables (age, sex, education, social class), dieting or smoking habits. In summary, consumers vary in their food label preferences, and studies that pool consumers may fail to capture these nuances, leading to biased results. This study shows that FOP labels do not steer all consumers toward healthier choices and may even have adverse effects for some. This suggests combining different policies and marketing strategies to reach all consumer segments.

University Students' Well-Being and Engagement in Activities in the Early Days of Covid-19.

Governments worldwide took measures to contain the spread of the coronavirus COVID-19. Universities moved to online teaching almost overnight. This paper explores Belgian university students' perceptions, behaviors, and emotional well-being during the first weeks of strict preventive measures. We conducted a survey with 614 business administration students at the University of Antwerp. The results indicate that, in comparison to the pre-lockdown period, students feel less productive, engage less in healthy behaviors (e.g., healthy snacking, exercising alone), and report more study problems. Based on the emotional quality of their everyday experience, students can be clustered into two groups. One group (54.5%) experiences mostly negative affect, while the other reports experiencing mostly positive affect and personal optimism. The "negative affect" group consists of more women and students in the early years of their bachelor's. This group experiences more financial difficulties and spends more time on social media. These students seem to have a more challenging time coping with the lockdown: they perceive higher study load increase and more significant reduction of social contacts while facing more study problems, studying fewer hours, and perceiving a lower study efficiency. They also engage in less healthy behaviors (e.g., unhealthy snacking more, drinking more alcohol, and exercising alone less) to a greater extent than the positive affect group. These results confirm previous research, demonstrating a positive relationship between emotional well-being and the engagement in and the intensity of productive and healthy activities. Several recommendations are provided in light of these findings.

Physical Activity during the First Lockdown of the COVID-19 Pandemic: Investigating the Reliance on Digital Technologies, Perceived Benefits, Barriers and the Impact of Affect.

The measures to fight the spread of the COVID-19 pandemic have been concentrated on inviting people to stay at home. This has reduced opportunities to exercise while also shedding some light on the importance of physical health. Based on an online survey, this paper investigated physical activity behaviours of a Belgians sample (n = 427) during the lockdown period between the end of May 2020 and the beginning of June 2020 and found that, during this period, the gap between sufficiently and insufficiently active individuals widened even more. This paper analysed important moderators of physical activity behaviours, such as barriers and benefits to exercise, digital support used to exercise, and individuals' emotional well-being. Descriptive analysis and analyses of variance indicated that, generally, individuals significantly increased their engagement in exercise, especially light- and moderate-intensity activities, mostly accepted the listed benefits but refused the listed barriers, increased their engagement in digital support and did not score high on any affective measures. A comparison between sufficiently active and insufficiently active individuals during the lockdown showed that the former engaged even more in physical activity, whereas the latter exercised equally (i.e., not enough) or even less compared to before the lockdown. By means of a logistic regression, five key factors of belonging to the sufficiently active group were revealed and discussed. Practical implications for government and policies are reviewed.

Power Distance, Uncertainty Avoidance, and the Effects of Source Credibility on Health Risk Message Compliance.

The present study aims to explore the relationship between perceived message source (spokesperson) credibility and message compliance in response to a health risk message. Based on an experiment in Ireland (n = 406) and Belgium (n = 410), we test how the relationship between source credibility and message compliance is mediated by perceived threat and efficacy of the message, and moderated by power distance and uncertainty avoidance. A source that is perceived as more credible is found to increase message compliance by increasing both the perceived message threat and efficacy. The indirect effect of source credibility on message compliance through perceived efficacy is stronger for individuals with lower power distance and higher uncertainty avoidance.

Fear, threat and efficacy in threat appeals: message involvement as a key mediator to message acceptance.

In a sample of 170 youngsters, the effect of two versions of a public service announcement (PSA) threat appeal against speeding, placed in four different contexts, on evoked fear, perceived threat (severity and probability of occurrence), perceived response efficacy and self-efficacy, message involvement and anti-speeding attitude and anti-speeding intention is investigated. Evoked fear and perceived threat and efficacy independently influence message involvement. Message involvement is a full mediator between evoked fear, perceived threat and efficacy perception on the one hand, and attitudes towards the message and behavioral intention to accept the message on the other. Speeding experience has a significantly negative impact on anti-speeding attitudes. Message and medium context threat levels and context thematic congruency have a significant effect on evoked fear and to a lesser extent on perceived threat.

Attitudes and self-reported behavior of patients, doctors, and pharmacists in New Zealand and Belgium toward direct-to-consumer advertising of medication.

Patients', doctors', and pharmacists' attitudes toward direct-to-consumer advertising (DTCA) for medication and their perceptions of its impact on patient self-reported behavior in terms of request for, and consumption of, advertised medication were investigated. Data were obtained in New Zealand, 1 of only 2 countries that allow mass-media DTCA for prescription medication, and in Belgium, which does not. Attitudes were relatively negative in both countries, but significantly more positive in New Zealand than in Belgium. The impact of DTCA (both in a positive and a negative sense) on self-reported patient behavior and patient interaction with doctors and pharmacists was limited in both countries. Although -- as already established in previous work -- the informativeness and reliability of DTCA can be much improved, and the attitude of medical professionals toward DTCA is negative in both countries, from the point of view of medical professionals and patients, DTCA does not harm the self-reported relationship between doctors, pharmacists, and patients.