Predicting attitude and intention to reduce food waste using the environmental values-beliefs-norms model and the theory of planned behavior

This study examined the role of biospheric and altruistic values in shaping pro-environmental beliefs, which can subsequently influence personal norms and lead to more positive attitudes and intentions regarding food waste reduction. Accordingly, the value, belief, and norm (VBN) theory and the theory of planned behavior (TPB) were integrated to develop the research model. Data were collected from 1,042 Chinese individuals. Partial least squares structural equation modeling was employed for data analysis, complemented by multi-group analysis (MGA), to examine gender and education-related differences. Both biospheric and altruistic values have been found to contribute to the strengthening of pro-environmental beliefs. Personal norms are activated directly and indirectly through a causal chain of pro-environmental beliefs regarding food waste reduction. The positive effect of social norms on personal norms, attitudes toward food waste reduction, and food waste reduction intention indicates that individuals in social groups with food waste reduction practices internalize these norms and transform their attitude toward food waste reduction, reinforcing their intention to reduce food waste. Furthermore, the MGA results revealed that significant differences between gender subgroups emerged only for the relationship between biospheric and altruistic values of pro-environmental beliefs and social and personal norms. This study enriches the VBN and TPB frameworks by underlining their applicability and relevance in food waste reduction. Practically, this study guides tailored interventions, policy formulations, and educational campaigns that harness intrinsic motivations and leverage social norms to foster sustainable behavior toward food waste.