Lenard Strahringer

Lenard Strahringer

PhD Student at Stanford GSB

Publications

Online Platforms for Social Connection

Help Converts Newcomers, Not Veterans: Generalized Reciprocity and Platform Engagement on Stack Overflow

Published in arXiv preprint, 2026

Generalized reciprocity – the tendency to help others after receiving help oneself – is widely theorized as a mechanism sustaining cooperation on online knowledge-sharing platforms. Yet robust empirical evidence from field settings remains surprisingly scarce. Prior studies relying on survey self-reports struggle to distinguish reciprocity from other prosocial motives, while observational designs confound reciprocity with baseline user activity, producing upward-biased estimates. We address these empirical challenges by developing a matched difference-in-differences survival analysis that leverages the temporal structure of help-seeking and help-giving on Stack Overflow. Using Cox proportional hazards models on over 21 million questions, we find that receiving an answer significantly increases a user’s propensity to help others, but this effect is concentrated among newcomers and declines with platform experience. This pattern suggests that reciprocity functions primarily as a contributor-recruitment mechanism, operating before platform-specific incentives such as reputation and status displace the general moral impulse to reciprocate. Response time moderates the effect, but non-linearly: reciprocity peaks for answers arriving within a re-engagement window of roughly thirty to sixty minutes. These findings contribute to the theory of generalized reciprocity and have implications for platform design.

Recommended citation: Strahringer, L., Prüß, S. E., & Riemer, K. (2026). Help Converts Newcomers, Not Veterans: Generalized Reciprocity and Platform Engagement on Stack Overflow. arXiv:2604.03209. https://arxiv.org/abs/2604.03209

How do Reputation Systems Affect Commitment and Social Cohesion in Economic Exchange?

Published in Social Psychology Quarterly, 2024

With the rise of the platform economy, economic interaction increasingly takes place under the regime of online reputation systems, which reduce uncertainty by publicizing others’ past behavior. However, uncertainty is central to the development of stable and cohesive relationships. The fundamental concerns are that reputation systems render personal, stable relationships obsolete and erode social cohesion. Grounded in social exchange theory, we propose two mechanisms through which reputation systems reduce commitment and inhibit social cohesion. These hypotheses are tested in a lab experiment simulating economic exchange with and without reputation systems. Contrary to our theoretical expectations, we find that reputation systems slightly reduce interactions between strangers and do not inhibit the development of cohesive ties. Although reputation systems reduce the expressive value of cooperation, they offset this undesired effect by increasing cooperation. Alleviating concerns about the social ramifications of the platform economy, the relationship structure appears largely unaffected by the reputation system. We conclude that actors interpret acts of cooperation differently in the presence of a reputation system, and market participants develop relationships not for purely functional reasons but as emotion-based byproducts of economic exchange.

Recommended citation: Strahringer, L., & Corten, R. (2024). How Do Reputation Systems Affect Commitment and Social Cohesion in Economic Exchange? Social Psychology Quarterly. https://doi.org/10.1177/01902725241289880.

Collaborative Work

Show Me the Meaning of Working Lonely: Conceptualising the Interrelation between Individual and Collaborative Work

Published in European Conference on Information Systems (ECIS), 2022

Knowledge workers are increasingly working in multi-team contexts to solve complex business problems. While collaborative work is an indispensable mode of work in multi-team knowledge work, the complementary mode of individual work, i.e. working uninterrupted in solitude, is often overlooked. We aim to better understand individual work and its role within multi-team contexts. Based on a literature review of the office design and telework debates, we provide a detailed account of individual work. Taking this vantage point and putting the task structure centre stage, we conceptualise the interrelation between individual and collaborative work. Specifically, we develop the work types maturation, execution, and meta work to exemplify the bipartite interrelation by depicting their task-bound interplay and time-bound tension. Thereby, we offer a different perspective on ‘cooperative work’ and equip practitioners with a vocabulary to discern the role of and articulate the needed amount for individual work.

Recommended citation: Lansmann, Simon; Strahringer, Lenard; and Pullar, Lisa Julia, "Show Me the Meaning of Working Lonely: Conceptualising the Interrelation between Individual and Collaborative Work" (2022). ECIS 2022 Research Papers. 109. https://aisel.aisnet.org/ecis2022_rp/109/