Abstract
This study investigates the effects of portion size and numerosity heuristics on perceptions of small quantities of processed and whole foods. Participants were presented with various food portions (25g, 50g, and 100g) in different numerosity (one, two, and four) and asked to assess whether these were less than, equal to, or more than an appropriate portion size. Regression analysis was employed to investigate the factors that influence portion size perception. The results show that the presentation of the food influenced the perception of portion adequacy. The results also show an association between numerosity and portion sizes. Interestingly, when smaller foods are further divided into more units, the numerosity heuristics disappear. In addition, diet consciousness, body mass index (BMI), age, gender and hunger levels influenced the perceptions of the food portions. From a public health perspective, understanding the influence of portion size and numerosity heuristics is crucial, especially when overconsumption exacerbates food-related health issues. By being aware of the portion size effect and numerosity heuristic and raising awareness about these phenomena, individuals can be empowered to make more informed choices about their food intake. Additionally, food manufacturers and restaurants can consider these insights when presenting packaging and serving sizes, potentially promoting healthier eating habits.
Details
Presentation Type
Theme
KEYWORDS
DIETARY HABITS, OVEREATING, HEURISTICS, FOOD PORTIONS
