A Social Norms and Identity Approach to Increasing Fruit and Vegetable Intake of Undergraduate Students in the United Kingdom

This study investigated the influence of descriptive norm messages that either communicated that university students eat a sufficient amount of fruit and vegetable (F&V) or that they do not, on F&V consumption, and whether or not any effects are moderated by student identification. An online 2 (Norm: "Sufficient"/"Insufficient") × 2 (Identification: "Low"/"High") experimental design was employed. Infographics containing "sufficient"/"insufficient" F&V intake descriptive norms were presented. An identification manipulation was employed to create "high"/"low" student identifiers. F&V intake intentions were assessed after the manipulations; self-reported F&V intake was reported at 2 days post-intervention. Undergraduate students in the United Kingdom (N = 180) reported their intake intentions, of which 112 (62%) completed the behavioral follow-up. Participants were predominantly white female students from Scottish universities, mean age 20.4 (±1.6) years. Baseline mean F&V consumption was high (4.5 ± 2.8). There were no significant main effects of Norm or Identification manipulations on F&V intentions and intake. Significant norm × identification interactions were revealed for fruit intake intentions and vegetable intake at follow-up, indicating half-portion differences (~40 g) between groups. Ironic effects were observed for "high" identifiers, who neither intended to, nor acted in accordance with group norms; "low" student identifiers intended to and followed group norms, whereby the "sufficient"/"low" group intended to consume significantly more fruit portions and consumed more vegetables than the "insufficient"/"low" group. Given the half-portion differences between groups resulting from the norm × identification interactions, future research on a larger sample of young adults with low F&V intake is warranted to further explore the conditions under which moderating effects of identification are observed and the underlying mechanisms.

In Their Own Words: Parents and Key Informants' Views on Nutrition Education and Family Health Behaviors

Parents, health professionals, and communities are integral in the development of nutrition behaviors that reduce children's risk for high body mass index (BMI) and chronic disease. The aim of this study was to conduct formative evaluations with key health informants and parents to understand the specific strategies that families use at mealtimes to promote their family's health, along with the barriers they face in attending current nutrition education programming. Focus groups (in English and Spanish) were conducted with parents (n = 22; 63.64% Black/African American, 13.64% Black but not African American, 18.18% Hispanic/Latinx) whose household was located in a community where 50% of residents' gross income was ≤185% of the federal poverty level. Semi-structured interviews were conducted with six key informants with expertise in family health and nutrition. Inductive thematic analysis was used to identify themes across interviews. Six general themes emerged from the interviews including perceptions of health, relationships, health behaviors, facilitators, barriers, and desired changes. Across the six themes, participants responded with suggestions for community-based health promotion programs such as incorporating a broader definition of health to better address the individual and systemic barriers that perpetuate health inequities and make healthy eating difficult. Participants identified stress reduction, health literacy, and cooking knowledge as areas of interest for future programming.

Comparing the Utility of the Theory of Planned Behavior Between Boys and Girls for Predicting Snack Food Consumption

The purpose of this study was to use the theory of planned behavior to explain two types of snack food consumption among boys and girls (girls n = 98; boys n = 69), which may have implications for future theory-based health promotion interventions. Between genders, there was a significant difference for calorie-dense/nutrient-poor snacks ( p = .002), but no difference for fruit and vegetable snacks. Using stepwise multiple regression, attitudes, perceived behavioral control, and subjective norms accounted for a large amount of the variance of intentions (girls = 43.3%; boys = 55.9%); however, for girls, subjective norms accounted for the most variance, whereas for boys, attitudes accounted for the most variance. Calories from calorie-dense/nutrient-poor snacks and fruit and vegetable snacks were also predicted by intentions. For boys, intentions predicted 6.4% of the variance for fruit and vegetable snacks ( p = .03) but was not significant for calorie-dense/nutrient-poor snacks, whereas for girls, intentions predicted 6.0% of the variance for fruit and vegetable snacks ( p = .007), and 7.2% of the variance for calorie-dense/nutrient-poor snacks ( p = .004). Results suggest that the theory of planned behavior is a useful framework for predicting snack foods among children; however, there are important differences between genders that should be considered in future health promotion interventions.