Purpose Negative customer-to-customer interactions (NCCI) occurring in physical service encounters can have a detrimental effect on a focal customer’s experience. This paper aims to explore how the interplay between the physical servicescape and the presence and behavior of other customers can lead to NCCI. Moreover, through an examination of customers’ responsibility attribution, the paper underlines the need for service organizations to manage this interplay. Design/methodology/approach The authors rely on a mixed approach with two studies grounded in the Stimulus–Organism–Response paradigm. In a preliminary quantitative study, the authors test a model of the effects of NCCI on customers’ attribution and behavioral outcomes using partial least squares structural equation modeling. Next, in a qualitative study, they collect and explore NCCI incidents in eight service industries relying on the critical incident technique (CIT). Findings When experiencing NCCI, customers attribute at least partial responsibility for their negative experience to the service provider. The findings of the CIT study reveal three interplay mechanisms leading to NCCI: when other customers’ behavior is triggered by the physical servicescape; when other customers’ behavior is incongruent with the behavioral norms set by the physical servicescape; and when the physical servicescape is altered by other customers’ misbehavior. Originality/value This paper provides a comprehensive, empirically grounded, understanding of the interplay between the physical and social servicescape, focusing on the presence and behavior of the other customers and its effect on the customer experience.

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