Publication records

The rapid adoption of AI technologies by many organizations has recently raised concerns that AI may eventually replace humans in certain tasks. In fact, when used in collaboration, machines can significantly enhance the complementary strengths of humans. Indeed, because of their immense computing power, machines can perform specific tasks with incredible accuracy. In contrast, human decision-makers (DM) are flexible and adaptive but constrained by their limited cognitive capacity. This paper investigates how machine-based predictions may affect the decision process and outcomes of a human DM. We study the impact of these predictions on decision accuracy, the propensity and nature of decision errors as well as the DM's cognitive efforts. To account for both flexibility and limited cognitive capacity, we model the human decision-making process in a rational inattention framework. In this setup, the machine provides the DM with accurate but sometimes incomplete information at no cognitive cost. We fully characterize the impact of machine input on the human decision process in this framework. We show that machine input always improves the overall accuracy of human decisions, but may nonetheless increase the propensity of certain types of errors (such as false positives). The machine can also induce the human to exert more cognitive efforts, even though its input is highly accurate. Interestingly, this happens when the DM is most cognitively constrained, for instance, because of time pressure or multitasking. Synthesizing these results, we pinpoint the decision environments in which human-machine collaboration is likely to be most beneficial.

© 2023, INFORMS

Connecting otherwise disconnected individuals and groups - spanning structural holes - can earn social network brokers faster promotions, higher remuneration, and enhanced creativity. Organizations also benefit through improved communication and coordination from these connections between knowledge silos. Neglected in prior research, however, has been theory and evidence concerning the psychological costs to individuals of engaging in brokering activities. We build new theory concerning the extent to which keeping people separated (i.e., tertius separans brokering) relative to bringing people together (i.e., tertius iungens brokering) results in burnout and in abusive behavior toward coworkers. Engagement in tertius separans brokering, relative to tertius iungens brokering, we suggest, burdens people with onerous demands while limiting access to resources necessary to recover. Across three studies, we find that tertius separans leads to abusive behavior of others, mediated by an increased experience of burnout on the part of the broker. First, we conducted a five-month field study of burnout and abusive behavior, with brokering assessed via e-mail exchanges among 1,536 university employees in South America. Second, we examined time-separated data on self-reported brokering behaviors, burnout, and coworker abuse among 242 employees of U.S. organizations. Third, we experimentally investigated the effects of the two types of brokering behaviors on burnout and abusive behavior for 273 employed adults. The results across three studies showed that tertius separans brokering puts the broker at an increased risk of burnout and subsequent abusive behavior toward others in the workplace.

© 2023, INFORMS

Problem Definition: Clients and service providers alike often consider one-on-one service delivery to be ideal, assuming – perhaps unquestioningly – that devoting individualized attention best improves client outcomes. In contrast, in shared service delivery, clients are served in batches and the dynamics of group interaction could lead to increased client engagement – which could improve outcomes. However, the loss of privacy and personal connection might undermine engagement. Practical Relevance: The engagement dynamics in one-on-one and shared delivery models have not been rigorously studied. To the extent that shared delivery may result in comparable or better engagement than one-on-one delivery, service providers in a broad array of contexts may be able to create more value for clients by delivering service in batches. Methodology: We conducted a randomized controlled trial with 1,000 patients who were undergoing glaucoma treatment over a three-year period at a large eye hospital. Using verbatim and behavioral transcripts from over 20,000 minutes of video recorded during our trial, we examine how shared medical appointments (SMAs) – in which patients are served in batches – impact engagement. Results: Patients who experienced SMAs asked 33.33% more questions per minute, made 8.63% more non-question comments per minute, and exhibited higher levels of non-verbal engagement across a wide array of measures (attentiveness, positivity, head wobbling or ‘talai tallattam’ in Tamil – a South Indian gesture to signal agreement or understanding – eye contact and end-of-appointment happiness), relative to patients who attended one-on-one appointments. Managerial Implications: These results shed light on the potential for shared service delivery models to increase client engagement and thus enhance service performance.

© 2023, INFORMS

We examine how crisis conditions affect the link between structural holes and organizational performance. Since brokerage offers early access to diverse perspectives and autonomy in exchange relations, the benefits of brokerage should rise when crises erupt. However, evidence on the subject has been inconclusive, raising the question of whether crisis actually imposes a boundary condition on structural hole theory. Using longitudinal data on investment banks, and exploiting the 2000 dot.com crisis as well as the 2008 financial crisis, we explore whether crises moderate the favorable effect of brokerage on performance. Our results reveal that only exclusive, and not shared, structural holes are advantageous for performance, as they facilitate ambidextrous responses to crisis. Implications for brokerage theory and for new research on crisis are discussed.

© 2023 John Wiley & Sons Ltd.

Scholars have suggested that autonomy can lead to better entrepreneurial team performance. Yet, there are different types of autonomy and they come at a cost. We shed light on whether two fundamental organizational design choices—granting teams autonomy to (1) choose project ideas to work on and (2) choose team members to work with—affect performance. We run a natural field experiment involving 939 students in a lean startup entrepreneurship course over 11 weeks. The aim is to disentangle the separate and joint effects of granting autonomy over choosing teams and choosing ideas compared to a baseline treatment with pre-assigned ideas and team members. We find that teams with autonomy over choosing either ideas or team members outperform teams in the baseline treatment as measured by pitch deck performance. The effect of choosing ideas is significantly stronger than the effect of choosing teams. However, the performance gains vanish for teams that are granted full autonomy over choosing both ideas and teams. This suggests the two forms of autonomy are substitutes. Causal mediation analysis reveals that the main effects of choosing ideas or teams can be partly explained by a better match of ideas with team members’ interests and prior network contacts among team members, respectively. While homophily and lack of team diversity cannot explain the performance drop among teams with full autonomy, our results suggest that self-selected teams fall prey to overconfidence and complacency too early to fully exploit the potential of their chosen idea. We discuss the implications of these findings for research on organizational design, autonomy, and innovation.

© 2021, INFORMS

Extant research has shown that it is harder for women than for men to form high-status connections in the workplace. Extending this line of research, we examine how two structural factors – geographic and network proximity – affect men’s and women’s chances of forming high-status connections. Using data on the formation of collaboration ties with star scientists within the R&D laboratories of the forty-two largest pharmaceutical companies between 1985 and 2010, we show that women who are geographically co-located with a “star” colleague are less likely to form a tie with that colleague than male peers who are similarly co-located, and this difference persists irrespective of the star’s gender. Conversely, women benefit more than men do from network proximity, as indicated by the presence of common third-party ties, and this difference widens if the star colleague is also a woman. By illuminating how geographic and network proximity affect the chances of forming high-status connections differently for women than for men, our study goes beyond the notion that women have reduced access to workplace social capital and expands consideration to the structural factors that underpin – amplify or reduce – that disadvantage.

With permission of the Academy of Management

Extant research shows that individual cognitive style affects whether employees benefit most from a brokering or a dense network. But do people build the network structure in which they perform best? We address this question by advancing a novel 2-stage explanatory model that explicitly disentangles the network formation process from its performance effects. We hypothesize that Adaptors (i.e., individuals inclined to focus on implementable solutions through commonly accepted and well-defined approaches) perform best when their network spans structural holes. Yet, these same individuals systematically forego opportunities to build relations across structural holes. By contrast, Innovators (i.e., individuals inclined to focus on envisioning creative solutions that break away with established approaches) draw no or even negative performance returns from structural holes. Nevertheless, their inclination is to build ever-new bridging relations. We test and find support for this counterintuitive hypothesis through a randomized longitudinal field experiment enabling us to disentangle empirically both stages of our theorized process model. Our findings help illuminate why people may build networks that hurt their performance, shed a new light on the role of individual cognitive style in shaping network advantage, and bear concrete implications for organizations aiming to leverage networks to enhance employees’ performance.

With permission of the Academy of Management