To slow down the increasing environmental degradation, design for sustainable behaviour (DfSB) has emerged in sustainable design aiming to promote behavioural change through design innovations to reduce environmental and social impacts from the demand side or consumer side. This paper presents a practice-based journey to investigate the process and results of the application of social-psychological theories into sustainable design. Focusing on the behaviour-related impacts of products and services during the use stage, a Design Behaviour Intervention Model (DBIM) is developed through the analysis and synthesis of the social-psychological theories and behaviour-changing strategies. The DBIM indicates that an in-depth study of consumer behaviour is the preliminary step in DfSB, which determines the application of design strategies and potentially the effectiveness of design interventions. A case study is presented to demonstrate the application of the model. The results show that consumer behaviour insights offer rich resources to assist designers in sustainable design innovation. Product-based design suggestions and a proposed solution highlight that the application of DBIM coupled with consumer involvement throughout the design process could produce desirable and sustainable patterns of household fridge use. Finally, the structured consideration of behavioural change and their possible application in DfSB are discussed.

Evidence demonstrates that food packaging attracts consumers to purchase and has the potential to nudge consumers towards healthy choices, including reducing portion size. However, food purchasing decisions are often automatic and packaging features may go unnoticed. Therefore, it is important to understand what consumers identify as most salient about packaging: what they notice and why, and which elements might nudge consumers towards healthy options and smaller portions of high‐energy‐density foods. This study explored consumer perception of food packaging, investigated specific features associated with portion control and elicited design ideas to improve packaging for healthy eating and downsizing. A qualitative approach was adopted applying a participant‐driven photo‐elicitation (PDPE) task with in‐depth interviews. Participants were 25 adults living in the UK (aged 20–32 years; 17 females, 8 males, BMI = 23 kg/m²). Participants took photographs of 10 food packages according to salience (n = 5) and portion control (n = 5). These were uploaded to a secure site and then discussed at the interview, which was transcribed and analysed. The salience of packaging was described in terms of trust building, stimulating appetite and relating to self‐identity, whereas for portion control, themes included structural reminders, healthy prompts and portion awareness. Packaging can be designed to make health value or serving size more salient by prompting portion control and increasing the attractiveness of packaging. While food purchase decisions happen with little deliberation, when probed, consumers provide useful insights for packaging design to assist portion control.

The digitalization of the world has rendered design for digital inclusion particularly important, which highlights the need to gain a comprehensive understanding of this field. The purpose of this review is to reveal the current development of the field of design for digital inclusion and identify research gaps and directions.Therefore, this study adopted bibliometric mapping to achieve the research goal. A total of 721 relevant articles in English were identified from Scopus. Descriptive analysis, including the publication trend, the most cited journals, the most cited articles, and the top authors with institutions, is described in order to trace the state-of-the-art development of the field. Network analysis, including bibliographic coupling and co-occurrence keywords, was used to identify research themes and future research directions. The results reveal four main investigated topics in the field: (1) information technology; (2) online education; (3) assistive technology; and (4) digital health. The review also highlights the distinctive features of design for digital inclusion compared to inclusive design, discusses the research gaps, and offers potential future research directions.