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This study aims to explore the effects of expertise diversity on project efficiency and creativity in health-care project teams.

This study analyzes hierarchical linear models using multi-source data from 50 project teams in a large health-care organization in the USA. This data set includes self-reported survey responses from 274 team members and human resource information for all 515 members across the 50 teams. Expertise diversity is operationalized by professional diversity and positional diversity reflecting two dimensions, domain and level, of the concept of expertise.

This study reveals that professional diversity is negatively related to project efficiency and project creativity, whereas positional diversity is positively related to project efficiency.

Successfully managing a project team of experts within a limited time frame is a challenge for organizations. This study advances the understanding of the double-edged sword effect of expertise diversity on project teams, focusing on professional and positional diversity. It provides important insights for human resource development in terms of the composition of project teams regarding members’ expertise.

Wine producers and marketing professionals increasingly recognize the significance of online wine reviews. Emotions have long been acknowledged as influential in online review behaviors. However, considering the multisensory nature of the wine experience, consumers’ wine expertise also plays a substantial role. Hence, this study aims to examine the online review behaviors exhibited by wine consumers through the dual lens of wine expertise and emotionality.

Two studies were conducted to address the research question. Study 1 explored the relationship among expertise, emotionality and review behaviors using a panel data model, with a data set consisting of 4,600,922 reviews from Vivino.com. Study 2 used a multigroup structural equation modeling (SEM) analysis using data obtained from an online survey. Study 2 aimed to investigate the interactive impact of emotionality and expertise on online review intention mediated by customer engagement.

The findings from Study 1 demonstrated a positive correlation between emotionality and online wine reviews. In addition, expertise displayed a bell-shaped relationship with both emotionality and online wine reviews. Study 2, in turn, uncovered that novices and experts experienced a direct influence of emotionality on their review intentions. In contrast, for those classified as ordinary, the influence of emotionality on review intention occurred indirectly through the mediation of customer engagement.

This paper extends the current literature on online wine review by integrating the effect of emotion and expertise on online wine review behaviors, expanding the examination of Dunning–Kruger effect in the wine literature. It also adds value by introducing emotionality and the Evaluative Lexicon into the hospitality literature, extending the measurement of emotion from valence and extremity to a third dimension, emotionality, in hospitality and wine domains.

To investigate the nature of investment expertise and factors affecting the information processing and performance of investment experts, this paper hypothesizes normative characteristics of investment expertise and compares such characteristics with actual characteristics documented in prior literature on the investment expert. Based on collective evidence from these sources, a model of investment expertise is proposed.

Results support the existence of investment expertise in (1) the nature of knowledge, (2) problem solving and information search, and (3) performance. A variety of factors that could influence the information processing and performance of the investment expert, including personal, cognitive, and contextual elements, are also discussed in the paper and included in the proposed model of investment expertise.

Groups typically are composed of members with different knowledge, information, and expertise. Group discussion provides the means by which members can communicate their unique knowledge to reach better group decisions, develop a shared system for remembering and retrieving knowledge, and establish their expertise through enacted performance. In this chapter, three streams of research are reviewed that explore knowledge communication in groups: Hidden profiles, transactive memory systems, and a performative view of expertise. Each of these three research streams complements and informs the other. Across these three research streams, 10 major research findings are identified. We offer three research directions that include integrating these research streams, examining knowledge communication in the context of emerging technology (e.g., artificial intelligence), and studying effects of knowledge diversity in conjunction with surface-level diversity (e.g., member race).

Financial analysts' forecasts serve as a proxy for market earnings expectations, and research provides mixed evidence of the relation between financial analysts' expertise and forecast accuracy. The judgment and decision-making (J/DM) literature suggests that those with more expertise will not perform better when tasks exhibit either extremely high or extremely low complexity. Expertise is expected to contribute to superior performance for tasks between these two extremes. Using archival data, this research examines the effect of analysts' expertise on forecasting performance by taking into consideration the forecasting task's complexity. Results indicate that expertise is not an explanatory factor for forecast accuracy when the forecasting task's complexity is extremely high or low. However, when task complexity falls between these two extremes, expertise is a significant explanatory variable of forecast accuracy. Both results are consistent with our expectations.

This chapter explores expert witnessing in anthropology and the raison d’être of cultural expertise as an integrated socio-legal concept that accounts for the contribution of social sciences to the resolution of disputes and the protection of human rights. The first section of this chapter provides a short historical outline of the occurrence and reception of anthropological expertise as expert witnessing. The second section surveys the theoretical reflections on anthropologists’ engagement with law. The third section explores the potential for anthropological expertise as a broader socio-legal notion in the common law and civil law legal systems. The chapter concludes with the opportunity and raison d’être of cultural expertise grounded on a skeptical approach to culture. It suggests that expert witnessing has been viewed mainly from a technical perspective of applied social sciences, which was necessary to set the legal framework of cultural experts’ engagement with law, but had the consequence of entrenching the impossibility of a comprehensive study of anthropological expert witnessing. While this chapter adopts a skeptical approach to culture, it also argues the advantages of an interdisciplinary approach that leads to an integrated definition of cultural expertise.

This chapter advances understanding of how professional expertise is enacted and created to accomplish routines in the context of technology-mediated work. Information and communication technologies broaden the participation of professionals with various specialist skills and expertise to accomplish work together, which is particularly salient in health care. Broadening participation, however, creates jurisdictional conflict among professionals. Thus, a key challenge of interprofessional work is the need to mutually adapt established professional routines and overcome jurisdictional conflict to perform interdependent routine tasks. The authors examine how professionals adapt established routines by analyzing the new interactions and interdependent actions required to accomplish technology-mediated geriatric consultation routines. The findings of this study show that professionals create new patterns of actions that are shaped by relational forms of professional expertise, namely selective and blending expertise. The findings and theoretical insights contribute to the literature on routine dynamics by highlighting the importance of relational expertise, and showing how it can transform and destabilize otherwise established professional routines.

This chapter uses the expertise literature (e.g., Ericsson et al., 2018; Ericsson & Pool, 2016) to explore ways that entrepreneurship education might be enhanced through the deliberate practice of specific entrepreneurial behaviors and cognitive skills. What is appealing about the use of expertise methods and theory is the application of very rigorous standards for improving behavioral and cognitive skills that are correlated to better outcomes. The authors suggest that an expertise approach challenges entrepreneurship educators to identify what aspects of the entrepreneurial process might be “deliberately practiced” and to consider modifying aspects of training entrepreneurs to better develop their entrepreneurial capabilities.

Considering the growth of the at-home smart technology industry and the increasing power of social media influencers, this study aims to examine how influencer endorsements affect individuals’ attitudes and trial intentions toward smart technology products.

An online experiment was conducted to investigate the impact of follower number and expertise domain of influencers and the trust propensity of individuals on their attitudinal and behavioral responses to influencer endorsements of smart technology products. The moderated mediation effect of perceived credibility was further examined.

The results demonstrated that individuals with lower trust propensity responded more positively to a microinfluencer with fewer followers and a specific area of expertise, which led to favorable attitudes and increased intention to try a smart technology product. However, the expertise domain was not a significant factor for the megainfluencer condition with a more extensive follower base. Interestingly, the interaction effects were not observed for individuals with higher trust propensity.

The results of this research provide practical implications for marketers who look for effective strategies for influencer marketing by demonstrating the significant impact of source-related cues, including follower number and expertise domain.

Based on the modality, agency, interactivity and navigability; source credibility; and persuasion knowledge models, this research explains how source-related cues of influencers affect credibility judgment, attitude formation and trial intentions for new technology products and how trust propensity as a personal dispositional factor varies the relationship.