ABSTRACT
: The theory of planned behaviour (TPB) has been widely used to understand environmentally sustainable food choices. However, the theory has been criticised for disregarding culturally specific variables, and the assumption that intentions will predict behaviour. This scoping review will identify the extent to which studies have applied the TPB to understand sustainable foods choices within Western and non-Western cultures. Supplementary questions guiding the review will focus on what demographic information is reported about participants, and variability across cultures. Seven databases will be searched for journal articles published from 2002. For inclusion, studies must include concepts that relate to the TPB (whether explicit or implicit). Furthermore, outcomes of interest refer to studies that predict intentions to eat or purchase sustainable foods and reduce food waste. Sustainable behaviours unrelated to food won't be considered. Considering inclusivity, studies conducted in any country will be included, but must be written or translated into English. Studies will be reviewed using Covidence, a software which facilitates data screening (i.e., title, , full text) and data extraction. Data extraction from studies will include whether the original or an extended version of the TPB was used, how the theory is represented in studies, what information is reported about participants and what country the study was conducted in. An evidence map produced will illustrate drivers of sustainable food choice intentions, the geographical distribution of studies and precisely how the theory applies to both Western and non-Western cultures. This study is pre-registered on Open Science Framework (https://osf.io/yu753/). Copyright © 2022