With growing awareness of packaging waste and pollution, reusable packaging systems (RPSs) appear to be a solution to mitigate the environmental impact of single-use packaging. Nevertheless, RPSs only become less environmentally harmful than single-use after each packaging is reused a minimum number of times, which is defined as the environmental break-even point (e-BEP). A lack of knowledge regarding this critical threshold may lead consumers to be overly optimistic about their reuse behaviour, resulting in insufficient reuse. Communicating e-BEPs can motivate conscious reuse but may also have drawbacks. We used a mixed-method approach consisting of an experiment (N = 276) with four e-BEP conditions (absent, low, medium and high) followed by open-ended questions. The quantitative findings showed that regardless of the e-BEP level, consumers neglected the efforts it implied and consistently exhibited positive perceptions. Nevertheless, the qualitative findings revealed several misperceptions of e-BEPs due to limited understanding. In a subsequent post-test (N = 208), we uncovered the role of consumers’ prior experience with reusable packaging on their evaluations and behavioural intentions. Experienced consumers who have used reusable packaging seem to be more aware of specific challenges in reuse. They exhibited heightened green scepticism and reduced perceived consumer effectiveness in response to high (versus low) e-BEPs. Conversely, inexperienced consumers appeared unaffected by e-BEP conditions. Based on these results, we proposed the potential effect of e-BEPs on consumer evaluations and derived theoretical and practical implications to encourage sustained reuse behaviour in the long run.

Household food waste plays a crucial role in the overall global food waste problem. A significant portion of this waste consists of edible leftovers that could be repurposed instead of discarded. However, leftover reuse remains an underexplored strategy for reducing food waste, despite its potential to contribute to more sustainable food consumption. By framing leftover reuse as a sufficiency-driven behavior, this study positions it as a key strategy for reducing food waste and fostering responsible consumption. Following a mixed method approach consisting of qualitative interviews, a survey and creative sessions with designers, this research explores the psychological factors that influence individuals' intentions to reuse food leftovers and provides practical design strategies to encourage leftover reuse. Based on a dataset of 244 households in the Netherlands, we use Structural Equation Modeling (SEM) to test a conceptual model grounded in psychological constructs, assessing factors influencing intention to reuse leftover food. The findings reveal that attitudes, and personal norms are significant factors in encouraging reuse of leftover food, while perceived health risks negatively affect attitudes towards reuse. Based on qualitative and quantitative insights, six evidence-based design strategies were developed to address both psychological motivators and practical challenges. The results contribute to the literature and practice by highlighting the psychological determinants of food leftover reuse and proposing interventions to foster sustainable food consumption practices.

Replacement decisions for consumer electronics involve trade-offs between product values, including emotional value (Van den Berge et al., 2021). Emotional value emerges when a product evokes positive emotions and affective states (Sheth et al., 1991). It can be acquired through diverse mechanisms, including sensory appeal and symbolic associations (Desmet et al., 2001; Orth et al., 2018). Design strategies support designers on how to translate these mechanisms into concrete product features that foster emotional value (Haines-Gadd et al., 2018; Wu et al., 2021). However, design strategies for emotional value are rarely implemented in consumer electronics. One reason may be that emotional value is shaped by individual consumer experiences (Kato, 2021). Thus, design strategies for emotional value may fail if they do not resonate with the user. This makes emotional value less predictable and harder to design for. Additionally, shifting emotions over time may undermine a product’s relevance (Chapman, 2009). This may cause products that initially establish emotional value to lose this value gradually. We define these shortcomings that prevent design strategies from creating or retaining emotional value during ownership as vulnerabilities.

Reusable packaging systems are emerging as a promising solution to combat the growing issue of packaging waste. While consumers generally recognise the environmental advantages of reuse, their actual reuse behaviours may result in insufficient reuse and an unintentional undermining of sustainability efforts. We conducted two creative workshops, created a large number of potential design interventions and further developed them into 16 design strategies for consumers' continued usage of RPSs through thematic analysis. These findings can inspire future research and the development of RPSs.

Refurbishment can extend the lifetime of an electronic product and reduce its environmental footprint. However, consumers often perceive refurbished electronics as less attractive than new ones, resulting in lower purchase intentions. While prior research has identified several factors that influence consumer choices regarding refurbished electronics, we lack understanding of the interrelations between the different factors related to the consumer, product and context. To model the complex interplay of the factors involved in the intention to purchase refurbished speakers and earbuds, we conducted a survey with 1801 participants. A network encompassing both product categories revealed that the most central factors influencing the intention to purchase refurbished electronics were the product category, the perceived risk and the perception that refurbished electronics are uncomfortable to use because they remind the consumer of their prior user (territorial contamination). For refurbished earbuds, participants' concerns about territorial and hygienic contamination had the strongest negative relations to purchase intentions. For refurbished speakers, the purchase intentions were most negatively related to their perceived risk and positively related to their financial attractiveness. Hence, strategies aiming to enhance the consumer acceptance of refurbished electronics should aim at reducing risks and contamination concerns. Potential strategies to reduce the risks associated with refurbished electronics are discussed.

Information technologies promise to make products and services more efficient and sustainable, yet the ICT industry has a substantial ecological footprint that is only expected to grow. This calls for actions beyond improving product efficiency. To this end, we explore whether demand for data can be moderated by encouraging ‘sufficient’ usage. We combine behaviour change theories with a critical design approach and conduct a Research through Design exploration of online consumption speculating about possible directions for reducing data use. Partnering with an internet service provider, we designed and tested with end users a set of three provotypes embodying data-sufficient design directions. We reflect on the results to argue that across the entire system of stakeholders, there is insufficient awareness of the environmental impact of data technologies. Further, we conclude by highlighting that contrary to the belief that interventions aimed at reducing consumption harm user experience, our results show that moderating data intake might actually even improve it.

Despite their environmental benefits, products made from recycled materials are not readily adopted. Prior studies focused on improving consumer adoption via product attributes and marketing elements, but the impact of product appearance remains a gap in the literature. This research contributes by investigating how observability of the recycled content, as a product appearance intervention, influences consumer adoption of products made from recycled materials. Building on the integrated conceptual framework for consumer response to the visual domain in product design, the findings from three experiments (n1=162, n2=219, n3=320) demonstrate that observability of the recycled content leads to higher purchase intentions (Studies 1, 2 and 3). The underlying process for this effect is that these observable appearance cues trigger identity signaling (Studies 2 and 3). This effect is stronger when the consumption context is public (Study 3). These findings enable practitioners to enhance adoption of these products through altering their appearance.

This research investigates consumers’ perception of two main types of reusable packaging systems: refillable and returnable packaging systems. An online experiment was conducted with Dutch consumers (n=250) in which attitudinal and behavioural responses to two reusable packaging systems were compared to the responses to disposable packaging. We created three types of packaging (disposable, refillable and returnable) for either food (ketchup) and non-food (shampoo) products. Results showed that consumers evaluate refillable and returnable packaging positively. Three benefits (environmental benefits, anticipated conscience and enjoyment) and three risks (contamination, complexity and performance risks) of reusable packaging are measured in this study. This research contributes to theunderstanding of consumers’ perception of reusable packaging systems, which can help future designers and companies to design their systems more effectively.

This research investigates how consumers evaluate returnable packaging for fast-moving consumer goods. Through three online studies, we analysed how returnable packaging influences consumer behavioural intentions (intention to recommend and repurchase intention), overall attitudes and product perceptions (attitude towards the product, perceived product quality, packaging convenience and perceived contamination), and the perceived environment-friendliness of the packaging. The results demonstrate that consumers, overall, rate returnable packaging more positively than single-use packaging, regardless of the type of single-use packaging (conventional or recycled plastic), the appearance of the returnable packaging (identical or different to the single-use packaging), and whether the type of product inside is non-sensitive or sensitive (a bottle of all-purpose cleaner vs. a pot of Greek-style yoghurt). Finally, the relevance and limitations of these results are discussed and their practical implications for managers, packaging designers and retailers are highlighted.

Reusable packaging systems (RPSs) can significantly reduce single-use packaging waste. However, knowledge about consumers’ adoption of this kind of packaging is scarce. We adopted a qualitative approach using in-depth interviews with consumers (n = 27) who had actually used an RPS and follow-up phone interviews to capture consumer behaviour at home. This exploratory study examines how packaging and system design not only influence usage by consumers but also serve as enablers and barriers for consumers at different stages of the consumption process. Our findings uncover that although consumers generally exhibited positive attitudes and good feelings about reducing packaging waste by using an RPS, they also raised concerns, such as about product quality, safety, contamination and financial investments, and they expressed scepticism about the environmental impacts through using the system and reported inconveniences at different stages. These results provide a comprehensive understanding of consumers’ perceptions of RPSs and can facilitate further development.

Long-lasting electronic products contribute to a sustainable society; however, both expected and actual lifetimes are in decline. This research provides in-depth insights into consumers’ considerations about product lifetimes, barriers to extending lifetimes, and responses to a product lifetime label. Results of interviews (n = 22) with Dutch consumers suggest a positive view on long-lasting products. Nevertheless, their products’ value depreciated during their lifetimes. Consumers consider themselves unable to estimate how long products should last, which can be detrimental as low expectations tend to negatively influence actual lifetimes. Also, use intensity and consumers’ care(less) behavior influence the lifetime. To extend product lifetimes, consumers often disregard the option of repairing malfunctioning products. They have limited knowledge and ability, and believe repair provides poor value for money. Lifetime extension can also be hindered by market-related factors, such as convenient replacement services, new technological developments, and (attractive) deals. We suggest a product lifetime label should contain relevant and reliable information; furthermore, we recommend including (extended) warranty information. When information about repairability is included, potential negative responses should be considered. Finally, raising awareness about the environmental impact of short-lived products via a label may have a positive effect but requires more research attention

Modularity represents a promising design strategy for product lifetime extension. Yet, the fact that products are physically designed to be repaired via such a modular design, does not mean consumers will act accordingly. Past research demonstrated promising results with current modular smartphone users. However, these users may not necessarily reflect the average consumer because modular products are not (yet) the norm. Two experiments were set up to test the effect of modularity on consumers’ likeliness to repair and to investigate which specific design cues can encourage consumers to execute DIY (‘do-it-yourself’) repair. The first study shows that a modular design increased the general likeliness to repair and decreased the task difficulty compared to a conventional design. Interestingly, the likeliness to use professional repair increased for modular smartphones, while the likeliness to DIY repair remained low. For DIY repair, consumers thus may need more support. The second study shows that facilitating design cues on the inside of a modular smartphone increased consumers' likeliness to consider DIY repair. Our results are relevant for practitioners aiming to increase electronic product DIY repair.

Current production and consumption patterns of consumer electronics have a negative impact on our environment. Designers can contribute to changing these patterns with more sustainable product design. Prolonging product lifetimes can have a positive impact, for which repair is a promising solution. However, the fact that a product can be physically repaired does not mean that users will act accordingly. Users generally have a low ability to repair consumer electronics. We suggest that design interventions may increase users’ can-do repair mentality, leading to a higher intention to repair. In three experiments, we tested the effect of a design intervention, namely the presence of a fault indication, on users’ willingness to repair. Our results showed a significantly higher willingness to repair in the presence of a fault indication, which is explained by a higher level of perceived self-efficacy (i.e., a can-do attitude). However, this result only holds true for products that are relatively less likely to be professionally repaired, such as coffee makers and (handstick cordless) vacuum cleaners, and not for washing machines, which are more likely to be professionally repaired. We end with practical design implications, limitations, and future research directions.

Reusable packaging systems (RPSs) show promise in replacing single-use packages by extending the packaging lifetime and significantly reducing waste. Yet, knowledge about consumer behaviour in the adoption of RPSs is scarce. We present in-depth insights into how consumers perceive RPSs as a new shopping pattern for fast-moving consumer goods (FMCGs). Our findings reveal that consumers’ high willingness to adopt RPSs stems from their awareness of waste and their desire to reduce it. Nevertheless, various reasons can complicate the process of adoption. First, consumers perceive reduced behavioural control in this new shopping pattern and are reluctant to invest extra effort or alter routines. Next, consumers weigh economic benefits to compare alternatives at the point of purchase and are generally unwilling to pay a premium for RPSs. In addition, even though consumers trust the hygienic standard of the RPS, they raise contamination concerns when they notice spillage, other consumers’ improper use and signs of usage generated on the packaging. In terms of environmental impact, consumers experience positive feelings about reducing packaging waste but also perceive the environmental impact as vague and doubt the effectiveness of their reuse behaviour. To encourage the adoption of RPSs, these barriers need to be addressed via design and marketing interventions.

This research investigates how a durable and attractive product appearance, the perceived contamination risk, and consumers' environmental concern influence the purchase intentions of refurbished products. Consumers often have lower purchase intentions of refurbished products because they associate them with lower durability and fear that they are contaminated with a former user's traces. The environmental friendliness and lower price incentivise consumers to purchase
refurbished products. Limitations of prior research are that it has focused strongly on qualitative research, and a comparison to the factors influencing the adoption of new products is lacking. This research contributes by investigating which factors significantly influence the purchase intentions of refurbished products. It additionally aims to uncover how these factors differ from those influencing purchase intentions of new products. In an online survey, we exposed 351 participants to a blender or headphones and informed them that product was either new or refurbished. Two versions for each product were created to vary in terms durability and attractiveness. Participants rated multi-item constructs on products' durability, attractiveness, contamination risk, their environmental concern and indicated their purchase intentions. The results indicate that product-related factors, such as durability and attractiveness, are important across the different phases of a circular life. Other factors, such as the contamination risk and the consumers' environmental concern, however, play an essential role in the decision to purchase refurbished products specifically. Underlining the cleanness of refurbished products and that they are a sustainable choice could be worthwhile strategies for increasing the desirability of refurbished products.

The circular economy can reduce the environmental footprint of today’s consumption and close the resource loop through circular material flows. Companies are encouraged to fol- low circular principles, such as using more recycled plastic materials. This initiative seems promising; however, it will only be successful if consumers are willing to adopt productsthat are made from recycled plastics. Consumers often have a positive image of products made from recycled plastics; however, they are also concerned about the perceived product risks. How can companies increase the appeal of recycled plastics to consumers? In this paper, we propose a set of seven guidelines intended to highlight the value of products
made from recycled plastics, tackle any perceived risks, and thereby enhance consumer acceptance of such products. Specifically, we highlight how aspects related to product design, marketing elements and business models, can increase consumer evaluations and adoption of products made from recycled plastics. The proposed guidelines provide future directions that could be inspiring for both academics and managers interested in the topics of consumer behaviour, circular economy, and sustainability

Refurbishment is an impactful strategy to extend product lifetimes. However, consumers believe that refurbished products are contaminated with traces of prior use. These traces can be of aesthetic (e.g., scratches) or functional nature (e.g., lower battery capacity). This research explores design strategies to improve consumer adoption of refurbished products by reducing contamination. In a choice-based conjoint-experiment, 785 participants were exposed to refurbished headphones varying in features related to contamination, warranty and price. Results showed that most consumers value no wear-and-tear, and if parts touching the skin (ear-cushions) are renewed during the refurbishment process; this is more important than the reduced price or warranty. Depending on the consumer group, other contamination-reducing strategies were of great influence: While some consumer groups highly valued that signs-of-prior-use are eliminated through an as-new appearance, others preferred refurbished products without functional wear-and-tear. Design strategies how to deal with contamination issues during multiple life cycles are discussed

Consumers have a positive attitude towards products made from recycled materials; however, they frequently end up not purchasing them. To shed light on the factors that influence consumer preferences and acceptance of products made from recycled materials, a scoping review was conducted with the following objectives: (1) to explore which factors are drivers of the acceptance of products made from recycled materials, (2) to identify and analyse potential barriers for their adoption, and (3) to formulate recommendations for future research in order to further enhance choices of alternatives made from recycled materials. The review of the results from 46 articles demonstrated that factors such as environmental benefits, perceived quality, safety, risks, emotions, and individual differences influence consumer acceptance of products made from recycled materials. The present review presents the state-of-the-art of the existing literature and future potential directions that can be fruitful for academics and practitioners interested in the topic.

This article explores consumers’ replacement of electronic products. A survey with 617 participants from Western Europe who had recently replaced their smartphones, vacuum cleaners, televisions or washing machines gives us insights on the age and state of products when replaced, repair considerations and the extent to which 19 reasons for replacement influenced the replacement decision. Overall, the results show that lifetimes were relatively short. Most products were replaced while they were still performing their main function, but showing a loss in performance. A majority of respondents (60%) replacing their defective product did not even consider repairing it. Interestingly, more of the respondents considered repairing a broken product (58.6%) than a partly malfunctioning one (30%). Washing machines were replaced for functional reasons while televisions were replaced because the consumers were attracted by the new features. Satiation was consistently one of the most important reasons to replace smartphones, vacuum cleaners and televisions.

Refurbishment is an effective strategy to extend product lifetimes in a circular economy. However, consumers believe that refurbished products are contaminated with traces of prior use, which can be indicated by the appearance (e.g., scratches) or functionality (e.g., lower battery capacity) of refurbished products. This research explores strategies to improve consumer adoption of refurbished products by reducing contamination. In a choice-based conjoint analysis, 785 participants were exposed to refurbished headphones varying in features related to contamination, warranty, and price. We tested three contamination-reducing strategies, including (1). Communication about the clean object state, (2). Eliminating signs of use (aesthetic and functional wear-and-tear) and (3). Renewing parts that touch the skin (e.g., ear-cushions). Additionally, we analysed whether different consumer groups are driven by different attributes of refurbished products. Results showed that most consumers value refurbished products that show no signs of wear-and-tear and that have parts touching the skin renewed during the refurbishment process. These attributes are even more important than the reduced price or warranty, even though these are frequently used to market refurbished products. Depending on the consumer group, other contamination-reducing strategies were of great influence. While some consumer groups highly valued that signs of prior use are eliminated through an as-new appearance, others preferred refurbished products without functional wear-and-tear. In conclusion, four design strategies to deal with contamination during multiple life cycles of refurbished products are discussed.