Publicações

This study explores the subjective perceptions of project managers regarding barriers to implementing sustainable project management (SPM). Using Q-methodology and grounded in the theory of planned behavior (TPB), 28 project managers across diverse industries sorted and ranked statements about sustainability-related constraints. The analysis revealed three distinct belief patterns: “motivated yet confined”, characterized by structural and organizational limitations; “motivated yet lacking competency”, reflecting personal skill gaps and limited training; and “motivated yet unsupported”, highlighting weak normative support from peers and leadership. Despite differing barriers, all participants expressed positive attitudes toward sustainability, underscoring a common intention–behavior gap shaped by varying perceptions of behavioral control and normative reinforcement. The findings suggest that generic interventions are insufficient; instead, belief-sensitive strategies are needed to enable SPM adoption. Implications include reforming performance measurement systems, integrating sustainability into professional training, and cultivating supportive organizational cultures. The study contributes to both behavioral theory and project management practice by reframing sustainability barriers as belief-dependent phenomena and offers a foundation for more tailored, psychologically grounded interventions. These insights are relevant for educators, policymakers, and organizational leaders seeking to enhance sustainability outcomes through empowered and context-aware project management practices.

This study explores how AI chatbot experiences on travel websites influence consumer engagement, with satisfaction from using AI chatbots as a mediating factor. Grounded in the Stimulus-Organism-Response (S-O-R) framework, the research shifts the focus from utilitarian models to examine how chatbot attributes—e.g., ease of use, information quality, security, anthropomorphism, and omnipresence—affect satisfaction of using AI chatbots and subsequent consumer engagement behaviours. Survey data from 519 Portuguese travellers were analysed using partial least squares structural equation modelling (PLS-SEM). The study contributes to theory by (1) demonstrating S-O-R’s advantages over utilitarian models in capturing relational and emotional dimensions of AI interactions, (2) identifying satisfaction with using AI chatbots as a pivotal mediator between AI chatbot experience and consumer engagement, and (3) revealing generational disparities in drivers of engagement. Notably, satisfaction strongly influences engagement for Generation X, while direct experience matters more for Generation Z. Millennials exhibit a distinct preference for hybrid human–AI service handoffs. The practical implications include prioritizing natural language processing for ease of use, implementing generational customization (e.g., gamification for Gen Z, reliability assurances for Gen X), and ensuring seamless human escalation for Millennials. These insights equip travel businesses to design AI chatbots that foster long-term loyalty and competitive differentiation.

This study examines the factors that motivate viewers to financially support streamers on the Twitch digital platform. It proposes a conceptual framework that combines the uses and gratifications theory (UGT) with Michel Foucault’s concept of the practice of freedom (PF). Using a cross-sectional quantitative survey of 560 Portuguese Twitch users, the model investigates how three core constructs from UGT—entertainment, socialization, and informativeness—affect the intention to donate, with PF acting as a mediating variable. Structural equation modeling confirms that all three UGT-based motivations significantly influence donation intentions, with socialization exhibiting the strongest mediated effect through PF. The findings reveal that Twitch donations go beyond mere instrumental or playful actions; they serve as performative expressions of identity, autonomy, and ethical subjectivity. By framing PF as a link between interpersonal engagement and financial support, this study provides a contribution to media motivation research. The theoretical integration enhances our understanding of pro-social behavior in live streaming environ- ments, challenging simplistic, transactional interpretations of viewer contributions vis-à-vis more political ones and the desire to freely dispose of what is ours to give. Additionally, this study may lay the groundwork for future inquiries into how ethical self-formation is intertwined with monetized online participation, offering useful insights for academics, platform designers, and content creators seeking to promote meaningful digital interactions.

This study identifies key attributes shaping the perceived image of accessible tourist destinations (ATDs) from the perspectives of various demand segments, including people with disabilities, individuals with health condition and their companions, and tourists without accessibility needs. It also compares these perceived attributes with those projected by destination management organizations (DMOs), as identified in previous research. A survey of 1052 Portuguese participants, employing quota sampling, supported a two-factor model of ATDs’ perceived image, with accessibility as a transversal dimension encompassing structural and environmental features. Accessible infrastructure and safety were identified as essential, while price and inclusive messaging were not significant in the confirmatory factor analysis. Attribute prioritization varies across segments, the results revealing substantial gaps between perceived and projected images, pointing to the need for closer alignment in destination branding strategies.

The fashion industry’s environmental crisis demands urgent shifts toward sustainable consumption models, such as capsule wardrobes. While prior research has examined ethical fashion adoption through conventional behavioral lenses, this study innovatively integrates heterodox economic theories, including the Theory of Subjective Value (TSV) and Bounded Rationality, with the Theory of Reasoned Action (TRA) to analyze discrepancies between attitudes and actions. Using a sample of 776 Portuguese consumers, we examine a mediation model where attitude links personal shopping values, fashion involvement, and socially responsible behavior to adoption intentions. Results reveal socially responsible behavior’s strong indirect effect via attitude, while personal shopping values and fashion involvement show paradoxical relationships, underscoring cognitive and market barriers. Gender and generational analyses highlight women’s higher sustainability engagement and Generation Z’s intention-action gap. The study advances sustainable fashion literature by exposing how subjective valuations and structural constraints interact, calling for coordinated stakeholder interventions beyond individual behavior change.