Modeling sustainable consumption: integrating social networks, awareness, and the extended TPB to reduce single-use plastic tableware

Together We Can Improve Outcomes in Kidney Failure: Examining Social Networks in Hemodialysis

Reusable bags have been introduced as an alternative to single-use plastic bags (SUPB). While beneficial, this alternative is economically and environmentally viable only if utilized multiple times. This study aims to identify the determinants influencing the use of reusable bags (RB) over single-use plastic bags (SUPB) within the framework of ecological impact reduction, employing the Theory of Planned Behavior (TPB). The focus is on understanding how attitudes (AT), subjective norms (SN), and perceived behavioral control (PBC) collectively guide consumers towards adopting reusable bags as a pro-environmental choice. The focus is on understanding how attitudes (AT), subjective norms (SN), and perceived behavioral control (PBC) collectively guide consumers towards the adoption of reusable bags as a pro-environmental choice. Data were collected through a survey administered to 814 consumers in Lahore, employing both regression analysis and Structural Equation Modeling (SEM) to assess the impact of AT, SN, and PBC on reusable bag consumption (RBC). The TPB framework underpins the hypothesis that these three psychological factors significantly influence the decision to use RBs. Both regression and SEM analyses demonstrated that AT, SN, and PBC positively affect RBC, with significant estimates indicating the strength of each predictor. Specifically, PBC emerged as the strongest predictor of RBC (PBC2, β = 0.533, p < 0.001), highlighting the paramount importance of control perceptions in influencing bag use. This was followed by AT (β = 0.211, p < 0.001) and SN (β = 0.173, p < 0.001), confirming the hypothesized positive relationships. The congruence of findings from both analytical approaches underlines the robustness of these techniques in validating the TPB within the context of sustainable consumer behaviors. The investigation corroborates the TPB’s applicability in predicting RBC, with a clear hierarchy of influence among the model’s constructs. PBC’s prominence underscores the necessity of enhancing consumers’ control over using RBs to foster sustainable consumption patterns. Practical implications include the development of policies and marketing strategies that target the identified determinants, especially emphasizing the critical role of PBC, to promote broader adoption of RBs and contribute to significant reductions in plastic waste.

Catalytic processing of plastic waste on the rise

BackgroundSustainable food consumption addresses global environmental challenges and safeguards long-term public health. Understanding how sustainability awareness translates into dietary practices is particularly important among young populations.ObjectiveThis study examined the mediating role of sustainable dietary behavior in the relationship between sustainable consumption tendencies and sustainable food consumption behavior among sport sciences university students, using the Theory of Planned Behavior (TPB) as a partial framework.MethodsA cross-sectional design was applied with 414 Erciyes University Faculty of Sport Sciences students. Data were collected through the Sustainable Consumption Scale, Sustainable Nutrition Behavior Scale, and Sustainable Food Consumption Behavior Scale. Mediation analysis was performed using PROCESS Macro Model 4 with 5,000 bootstrap samples to test indirect effects.ResultsSustainable dietary behavior significantly mediated the association between sustainable consumption and sustainable food consumption behavior (indirect effect = 0.10, 95% CI [0.04, 0.15]). Sub-dimensions such as seasonal and local food choices and waste reduction are strongly linked with sustainable food consumption.ConclusionThe findings suggest that fostering sustainable dietary behaviors is crucial for converting sustainability awareness into concrete dietary practices. University students constitute a key target group for public health and sustainability initiatives, and interventions should emphasize education, accessibility, and awareness to reinforce behavior-based change.

This paper examines the effects of electronic word-of-mouth (eWOM) on responsible tourism consumption behavior, based on the theory of planned behavior (TPB) and empirical investigation. A three-pronged approach (a cross validation technique involving a literature review, expert interviews, and an exploratory field study) was employed to obtain reliable and valid results. Structural equation modeling (SEM) was utilized to confirm the conceptual framework and hypotheses. Findings revealed a positive relationship between perceived behavioral control (PBC) and intention. Intention’s mediating role in responsible tourism consumption was also supported. eWOM’s positive, indirect effect on responsible tourism consumption emerged apart from the literature. The outcomes provide useful information for governments, the private sector, and civil society in planning and implementing sustainable consumption activities to achieve overall development for sustainable tourism. By proposing a conceptual framework based on TPB and utilizing the three-pronged approach, eWOM’s effects emerged as a valid extension of TPB. This study is among the first to be conducted in developing country and in the context of tourism in Thailand, where the primary focus is Sustainable Development Goal (SDG) #12: responsible consumption and production.

Social network analysis has been postulated as a tool to study potential pathogen transmission in wildlife but is resource-intensive to quantify. Networks based on bacterial genotypes have been proposed as a cost-effective method for estimating social or transmission network based on the assumption that individuals in close contact will share commensal bacteria. However, the use of network analysis to study wild populations requires critical evaluation of the assumptions and parameters these models are founded on. We test (a) whether networks of commensal bacterial sharing are related to hosts' social associations and hence could act as a proxy for estimating transmission networks, (b) how the parameters chosen to define host associations and delineate bacterial genotypes impact inference and (c) whether these relationships change across time. We use stochastic simulations to evaluate how uncertainty in parameter choice affects network structure. We focused on a well-studied population of eastern grey kangaroos (Macropus giganteus), from Sundown National Park, Australia. Using natural markings, each individual was identified and its associations with other kangaroos recorded through direct field observations over 2years to construct social networks. Faecal samples were collected, Escherichia coli was cultured and genotyped using BOX-PCR, and bacterial networks were constructed. Two individuals were connected in the bacterial network if they shared at least one E.coli genotype. We determined the capacity of bacterial networks to predict the observed social network structure in each year. We found little support for a relationship between social association and dyadic commensal bacterial similarity. Thresholds to determine host associations and similarity cut-off values used to define E.coli genotypes had important ramifications for inferring links between individuals. In fact, we found that inferences can show opposite patterns based on the chosen thresholds. Moreover, no similarity in overall bacterial network structure was detected between years. Although empirical disease transmission data are often unavailable in wildlife populations, both bacterial networks and social networks have limitations in representing the mode of transmission of a pathogen. Our results suggest that caution is needed when designing such studies and interpreting results.

How Behavioral Interventions Can Reduce the Climate Impact of Energy Use

This study evaluated the effects of a continuing education class that applied the theory of planned behavior to the intentions and behavior of mental health practitioners. In 2006 a total of 94 mental health practitioners were randomly assigned to either a standard continuing education class or one that applied principles of the theory of planned behavior. The class topic was a brief, self-report tool that assesses felt need for employment among people with serious mental illnesses. Participants' intentions to apply the tool were evaluated before and after each class. Participants' implementation of the tool was measured three months after the class. The class guided by the theory of planned behavior significantly and substantially increased the participants' intentions to use the tool in comparison with the standard class. Significantly more participants in the theory-guided class than in the standard class (74% versus 42%) had applied the tool by the three-month follow-up. Among those who implemented the assessment tool, the participants in the theory of planned behavior class also assessed significantly more of their caseload. The theory of planned behavior can improve and may be well suited to continuing education in psychiatry.

Sustainable food consumption among young adults in Belgium: Theory of planned behaviour and the role of confidence and values

Water is the lifeblood of our Earth, and sustainable water consumption is the key to preserving this scarce resource for future generations and upholding environmental sustainability. In this study, we investigate the relationship between environmental knowledge (EK), environmental policies and regulations (EPR), attitudes toward water resource management programs (APWRMP), perceived water quality (PWQ), and sustainable consumption (SC), enriching the existing literature by integrating the theoretical framework of the theory of planned behavior (TPB) alongside water management program (WMP) concepts. This integration forms a comprehensive model clarifying the influences on SC. Furthermore, this study investigates these relationships within the specific context of select regions in China, addressing a geographical gap in the current literature. With a sample size of (N = 336) participants, we employ partial least squares structural equation modeling (PLS‐SEM) to explore the complex relationships within the proposed model. The finding confirms the hypothesized associations, validating the substantial positive impact of EK and EPR on APWRMP and SC. Additionally, we observe that PWQ notably strengthens the link between the perception and attitude of villagers toward SC of water. Our study explains the multifaceted dynamics underlying individuals' behavior and attitude in making decisions concerning sustainable water consumption.

PurposeThis study aims to explore the sustainable wine consumption behavior of Italian consumers (Generation Y and Generation Z) using the theory of planned behavior (TPB) and incorporating additional variables − environmental citizenship and perceived knowledge. Conducted in Italy, one of the leading countries in wine production, this research seeks to understand the determinants influencing intention to purchase sustainable wine.Design/methodology/approachThe research uses a pilot study followed by a quantitative approach. Specifically, the pilot study, conducted through two distinct sessions of focus groups, has allowed the determination of one formative variable associated with the TPB: subjective norms. Structural equation modeling was then used to examine the possible effects of attitudes, subjective norms, perceived behavioral control, environmental citizenship and perceived knowledge on the intention to purchase sustainable wine.FindingsThe results highlight the significant influence of social factors on sustainable wine purchasing intentions. Specifically, attitude, perceived behavioral control and perceived knowledge similarly affect the intention to purchase sustainable wine of both Generation Z and Generation Y, with the latter being most strongly influenced by environmental citizenship. In addition, the findings indicate that women display a higher intention to purchase sustainable wine.Originality/valueThis study extends the original TPB framework by integrating two pivotal constructs: environmental citizenship and perceived knowledge. Counterintuitively, findings show that Gen Y is keener to buy and try sustainable wine because of stronger environmental citizenship, which is not considered significant for Gen Z. Positioning itself within the body of research on sustainable consumption, particularly in the context of sustainable wine consumption, the present research advances the understanding of sustainable wine purchasing behavior, expounding generational disparities, thereby enriching the academic discourse and equipping practitioners with insights to formulate efficacious marketing strategies.

Understanding the perception and awareness of senior high school teachers on the environmental impacts of plastic waste: Implications for sustainable waste education and management

Although consumption is the cornerstone of economic growth, it is unquestionably one of the main reasons for the current degradation of the planet. Hence, it is necessary to understand consumers’ different perceptions and behaviors regarding sustainable goods, as the solution will inevitably involve changing behaviors and promoting more sustainable consumption. In light of the challenges posed by sustainability within the wine sector, namely issues related to climate change, chemical exposure, and the availability of water and energy, and considering the industry’s substantial environmental and social impacts, it is important to understand the factors influencing wine consumer behavior. This research explores sustainable wine consumption in Portugal. Based on a sample of 197 valid responses, collected in an online survey that took place from March 20 to April 30 of 2024, and applying the Theory of Planned Behavior (TPB) framework, the current study found that consumers’ intention to consume sustainable wine is influenced by their attitudes, subjective norms, and sustainability awareness. Regarding the individuals’ consumption of sustainable wine, this behavior is influenced by the intention to consume this wine, and by consumers’ perceived behavioral control. The results also concluded that individuals’ intention to consume sustainable wine is significantly different across marital status, professional occupation, level of education, and age. With these valuable insights, this study aimed to increase the available information on sustainable wine consumption, allowing different stakeholders, namely political decision makers, to develop and implement more efficient measures to promote sustainable wine consumption.

Global biosphere issues call for an education for sustainable consumption decisions. Enabling adolescent learners to form sustainable consumption intentions involves an understanding of underlying internal predictors. The theory of planned behavior (TPB) delivers a useful approach to this challenge. Understanding of the underlying motives behind sustainable consumption decision-making, however, requires knowledge and evaluation of three basic sustainability aspects, the generational, the coherence, and the spatial aspect. As yet, the TPB framework does not take account of those facets. In this paper, we propose an extension of the TPB that meets these shortcomings by integrating the sustainability aspects while including the concepts of sustainability knowledge and sustainability values into the existing model. Furthermore, we extended the functional range of the attitude construct to the three sustainability aspects. The objective of the present article is to introduce and discuss the adapted framework which can serve as a first step for an educational implementation of the concept of sustainable consumption.

PurposeUnsustainable spending patterns of consumers directly contribute to 30–40% of environmental degradation, mainly in waste. Packaging is a vital part of responding to the main challenges of sustainable food consumption on the global stage. This study aims to investigate how environmental concern and trust in sustainable producers impact the sustainable consumption behaviors of consumers via the mediation of consumer xenocentrism and the moderation of eco-label and country of origin (COO) of buying sustainable packaged foreign food brands.Design/methodology/approachThis study employed a quantitative method. The authors used Smart PLS 3.0 structural equation modeling (SEM) technique for data analysis. Data from the participants were collected through the convenience sampling technique. A total of 343 valid responses were received.FindingsThe results indicate that xenocentrism is an emerging behavior among Pakistani consumers. The authors found that a high degree of environmental concern and trust in sustainable producers are the antecedents of consumer xenocentrism, which leads to sustainable consumption behavior.Research limitations/implicationsThis research highlights the importance of customers’ xenocentric attitudes that lead to sustainable consumption behavior. The research findings provide vital information for researchers, policymakers, academics, practitioners, industry professionals, brand managers and top management, especially in designing the environmental sustainability framework. Although the findings support theory of planned behavior (TPB), future studies can contrast different theories’ contributions to sustainable consumption behavior improvement. Also future researchers may analyze the impact of culture on the association between sustainable consumption and consumer attitudes toward environmental concerns and trust in sustainable producers.Originality/valueThis research contributes to practice and theory, as consumer xenocentrism is a relatively unexplored area of research in developing countries. To the best of the authors' knowledge, this study is the first to examine consumers’ xenocentric attitudes to sustainable consumption empirically.