Effects of increasing the availability of vegetarian options on main meal choices, meal offer satisfaction and liking: a pre-post analysis in a French university cafeteria.

BACKGROUND: Changing the food environment is an important public health lever for encouraging sustainable food choices. Targeting the availability of vegetarian main meals served in cafeterias substantially affects food choice, but acceptability has never been assessed. We examined the effects of an availability intervention at a French university cafeteria on students' main meal choices, meal offer satisfaction and liking. METHODS: A four-week controlled trial was conducted in a university cafeteria in Dijon, France. During the two-week control period, vegetarian main meals constituted 24% of the offer. In the subsequent two-week intervention period, this proportion increased to 48%, while all the other menu items remained unchanged. Students were not informed of the change. Student choices were tracked using production data, and daily paper ballots were used to assess student satisfaction with the meal offer and liking of the main meal they chose (score range [1;5]). Nutritional quality, environmental impact, and cost of production of meal choices were calculated for each lunchtime. Food waste was measured over 4 lunchtimes during control and intervention periods. An online questionnaire collected student feedback at the end of the study. RESULTS: Doubling availability of vegetarian main meals significantly increased the likelihood of choosing vegetarian options (OR = 2.57, 95% CI = [2.41; 2.74]). Responses of the paper ballots (n = 18,342) indicated slight improvements in meal offer satisfaction from 4.05 ± 0.92 to 4.07 ± 0.93 (p = 0.028) and in liking from 4.09 ± 0.90 to 4.13 ± 0.92 (p < 0.001) during control and intervention periods, respectively. The end-of-study questionnaire (n = 510) revealed that only 6% of students noticed a change the availability of vegetarian main meals. The intervention led to a decrease in the environmental impact of the main meals chosen, a slight decrease in nutritional quality, a slight increase in meal costs and no change in food waste. CONCLUSIONS: Doubling availability of vegetarian main meals in a university cafeteria resulted in a twofold increase in their selection, with students reporting being more satisfied and liking the main meals more during the intervention period. These results suggest that serving an equal proportion of vegetarian and nonvegetarian main meals could be considered in French university cafeterias to tackle environmental issues. TRIAL REGISTRATION: Study protocol and analysis plan were pre-registered on the Open Science Framework ( https://osf.io/pf3x7/ ).

Exploring the world of food with families: perspectives of low-income families on factors influencing their food choices.

OBJECTIVE: The aim of this study was to investigate the social and environmental factors involved in the food decision-making processes of families living on lower incomes on the Island of Ireland. DESIGN: A qualitative design was employed for this study, using photovoice and creative mapping methods. Parents were requested to take photos and draw maps of their food environments. Interviews were then conducted with parents, using the materials produced by parents as a cue to discuss their food environments, influences and decision-making processes around food choices. SETTING: The participants were interviewed online via Microsoft Teams. PARTICIPANTS: The participants were parents or guardians of children between the ages of 2 and 18 who self-defined as 'living on a tight budget'. RESULTS: Twenty-eight participants were recruited and interviewed for this study, including twelve parents in Northern Ireland and sixteen in the Republic of Ireland. The findings were mapped on to Bronfenbrenner's Ecological Systems Theory and showed that multiple, overlapping and intersecting factors at the individual, micro-, meso-, exo-, macro- and chrono-system were implicated in family food choices. Upstream factors in particular, including structural, policy and commercial determinants, appear to be significant drivers of behaviour. CONCLUSIONS: While the findings suggest that a complex range of factors are involved in family food choices, it is clear that policy measures and regulations are needed to stave off the impacts of rising social inequality and food poverty. Health promoters should strive to find non-stigmatising interventions to bridge the nutritional divide experienced by lower-income families.

Relaxed minds for healthier food choice at school: A field experiment in southern Mexico.

Stress leads to unhealthy food choices since the school-age stage. Yet, there is limited evidence particularly in low- and middle-income countries regarding the impact of stress-reduction strategies on school-age children's food choices. Such aspects were crucial during the recent COVID-19 pandemic, which exacerbated psychological distress and unhealthier food choices among children. Two years after the pandemic began, we conducted a field experiment in southern Mexico to assess the impact of stress-reduction strategies on the food choices of over 1400 children aged 9-12. Half of the school-classes in the sample were randomly assigned to a stress reduction strategy namely meditation, which comprised six audios with basic relaxation techniques and intuitive messages to guide food choices. Additionally, all participants received information signalling that an amaranth snack was nutritious (i.e., the healthy snack), which was paired with a chocolate bar (i.e., the unhealthy snack) as part of a snack choice experiment. Students that practiced meditation were slightly more likely to choose the healthy snack than those in the control group, but the effect was not statistically significant. Upon collecting their snack, students had the chance to exchange their original choice for the other snack. Students that meditated were more likely to exchange their originally chosen "unhealthy snack" towards the healthy snack than students in the control group. The meditation program effectively reduced chronic stress among treated children. The effect was larger among students attending schools in lower-income areas. Our study sheds some light on the challenges to translate an improved psychological well-being into healthier food choices at school.

Body dissatisfaction and beyond: Investigating attitudes towards calorie labels on UK food menus.

In 2022 the British government made calorie labels on menus a legal requirement to encourage healthier food choices while dining out. Yet, little research has explored perceptions of calorie labels on menus in the United Kingdom or tested whether there may be groups of people vulnerable to potential negative effects of calorie labels, such as those with body dissatisfaction. This between-subjects, convergent mixed-methods study addressed these enquiries. Participants were 562 adults who completed an online survey where hypothetical food orders were made from a menu. The study found that participants who viewed a menu with calorie labels ordered fewer calories. Quantitative results did not find that participants with higher levels of body dissatisfaction were at significantly greater odds of using calorie labels to order fewer calories. However, our qualitative (thematic) analysis revealed that experiences of calorie labels could be shaped by body image concerns. Themes further drew on how calorie labels were empowering, but there were also concerns about their oversimplicity. Findings are discussed in relation to implications for future calorie labelling policies. Given the inconsistent findings amongst the limited amount of literature investigating the role of body dissatisfaction in how calorie labels are used, future research is crucial. In the meantime, as a cautionary measure, clinicians involved in supporting individuals with body or food-related concerns should be aware of the challenges their clients may experience in facing calorie labels on menus when dining out.

Food-related exploration across the menstrual cycle.

When deciding what to eat we constantly weigh different aspects of the options at hand and make trade-offs between exploiting opportunities with a known outcome (e.g., eating your usual meal) and exploring novel opportunities with a potentially better outcome (e.g., trying a new dish). Environmental factors, such as scarcity, have previously been shown to tip the balance towards either exploration or exploitation. Studies in animals have further linked female steroid hormones (including estradiol and progesterone) to exploratory behavior. Previous work in humans has suggested that food preferences and food intake also change over the menstrual cycle. However, it remains unknown whether exploratory behavior in food choices also changes across the menstrual phases in humans. In a rating phase, 112 adult women (age range 18-45 years) on or off hormonal birth control rated 40 food items on desirability. In the choice phase, participants made binary choices between food items. On some trials, a surprise box replaced one of the two food options, allowing us to examine exploratory choices. Women off hormonal birth control reported their average cycle length and time since the first day of their last menstruation. Analysis of the percentage surprise choices across the menstrual cycle indicated a small, but significant effect, with exploratory choice behavior tending to increase around the middle of/later during the cycle. This provides preliminary novel evidence that hormonal fluctuations are associated with food-related exploratory choice behavior. Importantly, these effects were observed beyond effects of other food-related factors. Future studies should investigate the nature of these effects using more direct hormonal measures.

When food is uncertain, how much does sustainability matter? A qualitative exploration of food values and behaviours among users of a social grocery store.

A transition towards sustainable diets ensuring food security while preserving ecosystems is necessary, but remains challenging. Low-income consumers, particularly those experiencing food insecurity, require specific consideration since they face financial constraints when making food choices, leading to poorer diets. However, little is known about the place given to sustainability in their choices. This study thus aims to identify the role played by sustainability in the food values of food-insecure consumers in France. Twenty-nine semi-structured interviews with users of a social grocery store were conducted to investigate food values and actual behaviours, with a focus on the four dimensions of sustainable diets - health, economic, sociocultural and environmental. Verbatims were analysed through thematic analysis. Five core values were identified, namely health and nutrition, naturalness, trust and control, solidarity and frugality, and preferences. Participants valued all dimensions of food sustainability but notably valued less the environmental dimension. Despite various strategies, participants felt unable to adhere to their values in practice, mainly because of their socioeconomic vulnerability. They insisted on their lack of control over their food behaviour. These findings provide insights into the disempowerment experienced by consumers with low financial resources regarding more sustainable food choices. Our study calls for interventions addressing affordability issues and considering consumers' food values, while providing opportunities to make consumers feel involved in the transition of the food system.

Does presbygeusia really exist? An updated narrative review.

This review critically assessed the existence of presbygeusia, i.e., the impairment in taste perception occurring in the elderly, as a natural part of the aging process and its potential clinical implications. Several factors might contribute to age-related taste alterations (TAs), including structural changes in taste buds, alterations in saliva composition, central nervous system changes, and oral microbiota dysbiosis. A comprehensive literature review was conducted to disentangle the effects of age from those of the several age-related diseases or conditions promoting TAs. Most of the included studies reported TAs in healthy elderly people, suggesting that presbygeusia is a relatively frequent condition associated with age-related changes in the absence of pathological conditions. However, the impact of TAs on dietary preferences and food choices among the elderly seems to be less relevant when compared to other factors, such as cultural, psychological, and social influences. In conclusion, presbygeusia exists even in the absence of comorbidities or drug side effects, but its impact on dietary choices in the elderly is likely modest.

Smartphone Apps for Food Purchase Choices: Scoping Review of Designs, Opportunities, and Challenges.

BACKGROUND: Smartphone apps can aid consumers in making healthier and more sustainable food purchases. However, there is still a limited understanding of the different app design approaches and their impact on food purchase choices. An overview of existing food purchase choice apps and an understanding of common challenges can help speed up effective future developments. OBJECTIVE: We examined the academic literature on food purchase choice apps and provided an overview of the design characteristics, opportunities, and challenges for effective implementation. Thus, we contribute to an understanding of how technologies can effectively improve food purchase choice behavior and provide recommendations for future design efforts. METHODS: Following the PRISMA-ScR (Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews) guidelines, we considered peer-reviewed literature on food purchase choice apps within IEEE Xplore, PubMed, Scopus, and ScienceDirect. We inductively coded and summarized design characteristics. Opportunities and challenges were addressed from both quantitative and qualitative perspectives. From the quantitative perspective, we coded and summarized outcomes of comparative evaluation trials. From the qualitative perspective, we performed a qualitative content analysis of commonly discussed opportunities and challenges. RESULTS: We retrieved 55 articles, identified 46 unique apps, and grouped them into 5 distinct app types. Each app type supports a specific purchase choice stage and shares a common functional design. Most apps support the product selection stage (selection apps; 27/46, 59%), commonly by scanning the barcode and displaying a nutritional rating. In total, 73% (8/11) of the evaluation trials reported significant findings and indicated the potential of food purchase choice apps to support behavior change. However, relatively few evaluations covered the selection app type, and these studies showed mixed results. We found a common opportunity in apps contributing to learning (knowledge gain), whereas infrequent engagement presents a common challenge. The latter was associated with perceived burden of use, trust, and performance as well as with learning. In addition, there were technical challenges in establishing comprehensive product information databases or achieving performance accuracy with advanced identification methods such as image recognition. CONCLUSIONS: Our findings suggest that designs of food purchase choice apps do not encourage repeated use or long-term adoption, compromising the effectiveness of behavior change through nudging. However, we found that smartphone apps can enhance learning, which plays an important role in behavior change. Compared with nudging as a mechanism for behavior change, this mechanism is less dependent on continued use. We argue that designs that optimize for learning within each interaction have a better chance of achieving behavior change. This review concludes with design recommendations, suggesting that food purchase choice app designers anticipate the possibility of early abandonment as part of their design process and design apps that optimize the learning experience.

Neural correlates of changing food choices while bypassing values.

Current theories suggest that altering choices requires value modification. To investigate this, normal-weight female participants' food choices and values were tested before and after an approach-avoidance training (AAT), while neural activity was recorded during the choice task using functional magnetic resonance imaging (fMRI). During AAT, participants consistently approached low- while avoiding high-calorie food cues. AAT facilitated low-calorie food choices, leaving food values unchanged. Instead, we observed a shift in indifference points, indicating the decreased contribution of food values in food choices. Training-induced choice shifts were associated with increased activity in the posterior cingulate cortex (PCC). In contrast, the medial PFC activity was not changed. Additionally, PCC gray matter density predicted individual differences in training-induced functional changes, suggesting anatomic predispositions to training impact. Our findings demonstrate neural mechanisms underlying choice modulation independent of valuation-related processes, which has substantial theoretical significance for decision-making frameworks and translational implications for health-related decisions resilient to value shifts.

A food bank program to help food pantries improve healthy food choices: mixed methods evaluation of The Greater Boston Food Bank's Healthy Pantry Program.

BACKGROUND: The Greater Boston Food Bank's (GBFB) Healthy Pantry Program (HPP) is an online training that teaches food pantry staff to implement behavioral nudges (e.g., traffic-light nutrition labels, choice architecture) to promote healthier client choices. This study assessed if HPP was associated with healthier food bank orders by food pantries and identified implementation facilitators and barriers. METHODS: This mixed methods study collected quantitative data from a matched cohort of 10 HPP food pantries and 99 matched control food pantries in eastern Massachusetts that allow clients to choose their own food, and qualitative data from structured individual interviews with 8 HPP pantry staff. A difference-in-differences analysis compared changes in percentage of pantries' food bank orders (by weight) of foods labeled green/yellow (healthier choices) and fresh produce from baseline to 6 and 10 months between HPP and control pantries. Interviews were coded for implementation facilitators and barriers. RESULTS: Before starting HPP, green-yellow ordering was 92.0% (SD 4.9) in control and 87.4% (SD 5.4) in HPP pantries. Participation in HPP was not associated with changes in green-yellow or fresh produce ordering at 6 or 10 months. HPP implementation facilitators included HPP training being accessible (sub-themes: customizable, motivating) and compatible with client-choice values. Barriers included resource limitations (sub-themes: staff shortage, limited space) and concerns about stigmatizing client food choices with use of labels for unhealthy foods. CONCLUSIONS: An online program to help pantries promote healthier client choices was not associated with changes in how much healthy food pantries ordered from the food bank, suggesting it did not substantially change client choices. Implementation challenges and high baseline healthy ordering may have influenced HPP's effectiveness.

Public acceptance of default nudges to promote healthy and sustainable food choices.

BACKGROUND: Default nudges are an increasingly prominent tool for promoting healthy and sustainable food choices; however, questions of acceptance remain. While default nudges are more acceptable to the public than traditionally paternalistic tools that aim to restrict choice, they are also the least acceptable amongst nudging strategies. Little research has investigated the aspects of default nudge design that can be leveraged to better uphold freedom of choice, increase public acceptance, and therefore heighten legitimacy of default nudges. Consequently, this study examines public acceptance of five food choice default nudges with demonstrated precedent of effectiveness, as drawn from research studies and/or real-world policies, along with a design variation of each anticipated to increase acceptance. Three drivers of acceptance - perceived intrusiveness, perceived effectiveness, and own behavior - are examined. METHODS: An online survey was administered in Germany (N = 451) to a sample representative of the adult population on quotas of age, gender and income. Acceptance and drivers were measured using seven-point Likert scales. Significant differences in median acceptance of the nudge were determined and displayed graphically. Ten proportional odds ordered logit models were applied and estimated using a maximum likelihood approach to investigate the mechanisms of nudge acceptance. RESULTS: Examined changes in nudge design, particularly decreasing costliness of opting out and increasing transparency, increased the acceptance of three of the five nudges (N2.2: p = 0.000; N3.2: p = 0.000; N4.2: p = 0.008). Perceived intrusiveness emerged as the most prominent driver of acceptance (negative relationship), followed by perceived effectiveness (positive relationship). Own engagement in the target behavior of the nudge and socio-demographic variables demonstrated negligible impact on acceptance. CONCLUSIONS: Mitigating the costliness of opting out and improving nudge transparency emerge as key opportunities for choice architects to improve public acceptance, and thereby potentially identify 'sweet spots' in designing default nudges that are both effective and acceptable. The protection of individual freedom of choice and effectiveness are key aspects for choice architects to communicate to increase acceptance.

Instagram-based priming to nudge drink choices: Subtlety is not the answer.

Instagram-based priming (e.g., subtly incorporating healthy drinks into the background of Instagram images) could potentially nudge healthier consumption behaviours. Given the negative health consequences associated with sugar-sweetened-beverage consumption, two experiments tested the effect of three sets of Instagram-based primes for nudging drink choices from a visual food and drinks display. Participants (18-25 years) were randomly assigned to view a series of Instagram advertising images (for technology, travel, or homeware products) that included a glass containing water (water prime) or cola (soft drink prime), or no drink (control). They then selected an item from the visual display containing snack foods and drinks. In Experiment 1 (n = 493) beverages were subtly incorporated into the priming images; in Experiment 2 (n = 471) beverages were made more prominent. Priming condition did not predict choice in Experiment 1 but did so in Experiment 2, where participants in the soft drink prime condition were significantly more likely to select a drink versus a food, compared to those in the water prime and control conditions. The water prime did not predict choice in either study. A greater percentage of participants noticed the beverage primes in Experiment 2 than in Experiment 1. Overall, it appears that when clearly visible, soft drinks incorporated into Instagram-style images can nudge drink choices. However, a less subtle approach may be needed to effectively encourage healthier drink choices.

Only the best for my kids: An extended TPB model to understand mothers' use of food labels.

Despite the evidence that mothers' food purchasing behavior impacts the quality of children's diet, few studies have explored psycho-social factors influencing how mothers choose the food to buy for their children. To fill this gap, this study tested an extended Theory of Planned Behavior (TPB) model to predict mothers' tendency to seek information on food labels before purchasing food for children. Participants included 311 Italian mothers who completed a self-report questionnaire measuring their information-seeking behavior, TPB variables, anticipated regret and healthy-eater identity. Results from a Multiple Correspondence Analysis showed that mothers' information-seeking behavior involved a continuum of choices ranging from selecting conventional or prepackaged foods to choosing to read the food label before making a purchase. Besides, a Partial Least Squares-Structural Equation Modeling analysis showed that information-seeking behavior was positively predicted by intention (ß = 0.309, p < 0.001) and healthy-eater identity (ß = 0.195, p < 0.001). In turn, intention was positively affected by attitude (ß = 0.208, p < 0.001), subjective norms (ß = 0.155, p < 0.01), perceived behavioral control (ß = 0.124, p < 0.05), anticipated regret (ß = 0.193, p < 0.001), and healthy-eater identity (ß = 0.191, p < 0.001). These findings emphasize that future initiatives could usefully target attitude, anticipated regret and self-identity to encourage mothers' informed food choices for their children.

Increasing meat-free meal selections: The role of social identity salience and identity-related meal names.

Avoiding meat overconsumption is good for the environment and people's health. Changing meal names represents a simple, cost-effective way of increasing meat-free meal selection in restaurants. In the past, however, this approach has shown limited effectiveness. The activation of different social identities may explain inconsistencies in prior findings and offer a powerful leverage point for influencing meal choices. We recruited participants (N = 899) who identified as "meat-eaters" for an online experiment in which they were asked to select a meal from a menu that included meat-free and meat-based burgers. We manipulated (1) social identity salience (meat-eater identity; sustainable identity; personal identity) and (2) the meal names on the menu (vegetarian name; sustainable name; neutral name). Our findings show that activating a sustainable identity significantly increases the odds of selecting a meat-free burger (22%) compared to alternative identity conditions (meat-eater identity 12%, personal identity 12%). Sustainable meal names outperform vegetarian but not neutral meal names (sustainable name 20%, vegetarian name 12%, neutral name 15%). When participants who previously selected a meat-based burger (N = 760) were limited to meat-free menu options, satisfaction and enjoyment ratings dropped steeply. This drop was significantly stronger in the meat-eater identity condition. Accounting for identity salience can lead to more targeted, improved interventions that increase meat-free meal selections by accounting for people's different social identities and the social context in which food consumption tends to occur.

Children's food choices are highly dependent on patterns of parenting practices and food availability at home in families at high risk for type 2 diabetes in Europe: Cross-sectional results from the Feel4Diabetes study.

BACKGROUND: Food parenting practices, behaviours and food availability at home are associated with children's food choices; however, these associations have been mainly studied for each parenting practice separately and focused mostly on healthy populations. The aim of the study was to identify patterns of parenting practices (including data regarding food availability at home, food and physical activity-related behaviours and rewards) and to investigate their cross-sectional associations with children's food choices in families at high risk for type 2 diabetes (T2D). METHODS: Data of parents and children (n = 2278), from the Feel4Diabetes study conducted in six European countries, were collected using validated questionnaires. The data analysed included children's food choices, food availability at home and food and physical activity-related parenting practices. Four patterns of parenting practices were identified using principal component analysis, and associations between those components and children's food choices were assessed using adjusted, individual linear regressions. RESULTS: Parenting patterns focusing on unhealthy habits, such as allowing unhealthy snacks and unlimited screen time, providing higher availability of unhealthy foods at home, rewarding with snacks and screen time, were positively associated with children's unhealthy food choices (consumption of savoury/sweet snacks, fizzy drinks, etc.). The parenting patterns providing fruit/vegetables at home, consuming fruit, and being physically active with the child were positively associated with children's healthier food choices (consumption of fruit, vegetables, whole grain cereals, etc.). CONCLUSIONS: Public health initiatives should focus on high-risk families for T2D, assisting them to adopt appropriate parenting practices and behaviours to promote healthier food choices for children.

How to improve food waste management in hospitals through focussing on the four most common measures for reducing plate waste.

Hospitals have a responsibility to link human health and the environment, but food waste in hospitals has traditionally been much higher than in other areas of food supply. The cause of this situation has many negative impacts on health, economy, society, and environment. As a result, food waste has become a topic of discussion in hospital food departments. Part of this problem is plate waste, the served food that remains uneaten by patients. Given the magnitude of the food problem, this systematic review is aimed to identify the most common measures used to reduce plate waste in hospitals. PubMed, Scopus, and Google Scholar databases were comprehensively searched to identify food waste studies worldwide using related search terms. Many approaches have been recommended to increase patient food intake and minimise plate waste in hospitals. Up to date, the four most common include flexible portion sizes, increased food choices through selective menus, additional nutritional support and a better ordering and delivery system. Among them, the most used and effective are flexible portion sizes which may increase the ability of patients choosing their menus and upgrade ordering and delivery system by electronic format. In most studies, plate waste covers the most significant percentage of food waste produced in hospitals, while more than one approach is recommended to minimise it. In this aspect, further well-design, multicenter, clinical studies are strongly required to highlight and establish novel and effective approaches for improving food waste management in hospitals by reducing plate waste.

Lifestyle and eating habits before and during COVID-19 quarantine in Brazil.

OBJECTIVE: To assess changes in daily habits, food choices and lifestyle of adult Brazilians before and during the COVID-19 pandemic. DESIGN: This observational study was carried out with Brazilian adults through an online questionnaire 5 months after the social distance measures implementation. The McNemar, McNemar­Bowker and Wilcoxon tests were used to investigate differences before and during the COVID pandemic period, adopting the statistical significance of P < 0·05. SETTING: Brazil. PARTICIPANTS: Totally, 1368 volunteers aged 18+ years. RESULTS: The volunteers reported a lower frequency of breakfast, morning and lunch snacks (P < 0·05) and a higher frequency of evening snacks and other meal categories during the pandemic period (P < 0·05). The results showed an increase in the consumption of bakery products, instant meals and fast food, while the consumption of vegetables and fruits decreased (P < 0·005). There was a significant increase in the frequency of consumption of alcoholic beverages (P < 0·001), but a reduction in the dose (P < 0·001), increased frequency of smoking (P = 0·007), an increase in sleep and screen time in hours and decrease in physical activity (P < 0·001). CONCLUSIONS: It was possible to observe an increase in screen time, hours of sleep, smoking and drinking frequency. On the other hand, there was a reduction in the dose of alcoholic beverages but also in the practice of physical activity. Eating habits also changed, reducing the performance of daytime meals and increasing the performance of nighttime meals. The frequency of consumption of instant meals and fast food has increased, while consumption of fruits and vegetables has decreased.

Appealing dish names to nudge diners to more sustainable food choices: a quasi-experimental study.

BACKGROUND: Promoting plant-rich diets, i.e., diets with significantly reduced amounts of animal products, including vegan and vegetarian, is a promising strategy to help address the dual environmental and health crises that we currently face. Appealing dish names could boost interest in plant-rich dishes by attracting diners' attention to them. In this study, a systematic approach to naming plant-rich dishes with appealing descriptors was tested with a quasi-experimental design in four workplace, self-service, buffet-style cafeterias in Chicago, Sydney, São Paulo and Singapore. METHODS: Three different plant-rich dishes were tested at each site. Appealing names were generated systematically through a workshop and emphasized the dish ingredients, origin, flavor and/or the eating experience. Each test dish appeared once in a four-week menu cycle where menu options changed on a daily basis. The cycle was then repeated four times (six times in Chicago) with the total number of showings for each dish to be four (six in Chicago). The dish names alternated between basic and appealing across dish repetitions. For each dish, the food taken per plate was estimated by weighing the overall food taken and dividing it by the plate count in the cafeteria. Data was analysed as percentage change from baseline (i.e., the first showing of each dish that always had a basic name) with linear mixed effects analysis using the lme4 package in R. RESULTS: Overall, appealing dish names significantly increased the amount of food taken per plate by 43.9% relative to baseline compared to basic dish names (54.5% vs. 10.6% increase for appealing vs. basic names, respectively, p = .002). This increase corresponded to a 7% increase in actual grams of food taken per plate. Secondary analysis showed that the effect was site-specific to English-speaking countries only and that there was no substitution effect between plant-rich and meat dishes. CONCLUSIONS: The study tested an approach to creating appealing dish names in a systematic way and indicates that, in some settings, appealing dish titles are a relatively easy, scalable, cost-effective strategy that the food services sector can adopt to shift food choices towards more plant-rich, sustainable ones.

Using CATA tests to capture consumers' mental representations elicited by images of pulse-based food products with different levels of processing.

Consumption of pulses plays a key role in achieving a healthier and more sustainable diet. Despite the increased availability of pulse-based foods on the French market, pulse consumption in France remains below recommended levels. The objective of this study was to capture French consumers' mental representations of various pulse-based foods with different levels of processing, using a Check-All-That-Apply (CATA) questionnaire with food images. We used CATA questionnaires, in two separate studies, to capture two aspects: consumers' beliefs about the products presented in the study, and the characteristics of those products, according to consumers. In Study 1, twelve images of pulses were presented (unprocessed, processed, and ready-to-eat) to investigate whether and how consumers differentiate between pulse-based products with different recipes and levels of processing. In Study 2, parallel CATA questionnaires were used: one with images of pulse-based products, and one with images of vegetables. We wanted to discover whether the factors underlying different representations for pulse-based products were specific to pulses, or were also observed with another family of food products. Results showed that products were differentiated more by their level of processing than by their main ingredient. Participants had more positive attitudes toward pulse products that were unprocessed, processed, or "new ready-to-eat", than toward other ready-to-eat pulse products (whether canned or frozen). Our results also highlighted that, in consumers' mental representations of pulse-based products, packaging format is a negligible factor in comparison with the nature of the product itself.

Misperceived eating norms: Assessing pluralistic ignorance in the food environment.

The current food environment communicates the social norm that it is normal to consume large amounts of unhealthy and unsustainable foods. However, it is unknown whether people endorse this norm because they agree with it, or whether they endorse it because they overestimate the degree to which other people agree with this norm - a phenomenon that is labeled as 'pluralistic ignorance'. We examined the possible presence of pluralistic ignorance by corroborating previous pluralistic ignorance literature in the food environment among a large representative sample of community residents (N = 433). In addition, we aimed to better assess pluralistic ignorance by comparing multiple dimensions, including how participants perceived themselves and other people in the importance, frequency, normalcy, and intentions of consuming healthy and sustainable food. We analyzed the perceptions with paired t-tests and our findings show that participants considered themselves to be healthier and more sustainable eaters than other people on all four dimensions. However, they did not think that other people were eating unhealthy or unsustainable. Participants themselves held low intentions to eat more healthily or sustainably and believed others had similar low intentions. Together, these findings reveal that there is a discrepancy between the perception of oneself and others regarding healthy and sustainable eating norms, which may suggest pluralistic ignorance. However, it is unclear whether this discrepancy would actually influence behavior, as suggested by the pluralistic ignorance literature, since people consider themselves healthier and more sustainable consumers who may not adjust their standards to perceptions of other people. We speculate they may use this discrepancy as justification in order to be complacent. In the discussion we consider these implications and next steps for future research.