Multiple identity configurations and their influence on prosocial behavior in organizations Abstract Bringing one’s whole self to a task is considered an appealing goal for individuals and organizationsas it is likely to yield positive outcome. This goal is particularly attractive to nonprofit organizations, which are trying to meld task performance and altruistic motives, or what can be called prosocial behavior (Grant, 2008; Grant, Dutton &Rosso, 2008). This paper examinesthe question how and when bringing one’s whole self (multiple identities compared to just its parts) to bear on a prosocial behavior can be beneficial.In contrast to research that examines how a single, salient identity affects prosocial behavior (Stets & Burke, 2000; Tajfel & Turner, 1979), we investigate the effects on prosocial behavior of multiple identities, as well as the structure and interaction between those identities (Ashforth, Harrison &Corely, 2008; Edwards &Rothbard, 2000; Ramarajan& Reid, 2013;Rothbard, 2001). We identify and study identity configurations (structure and relationships) of prosocial, individual and collective identities combined in conflicting and enhancing ways (Rothbard&Ramarajan, 2009; Dutton et al. 2010).Generally, we find that the mix of conflict and enhancement relationships among multiple identities results in different identity structural configurations, and that these configurations, in turn, influencemeasured prosocial outcomes. Relying on a mixed method approach, we study participants in international charity sport eventsusing 31 in-depth interviews, 162 pre- and post-event surveys from 3 different rides andwe conduct a field experiment to text generalizability of our findings. We test whether participants’ multiple identities influence three measured behavioral outcomes: amount donated to a charity, attitudes towards the organization organizing the event, and the participants’ fundraising network. The paper is structured as follows. First, we review the literature on identity in organizations, identifying three types of identity contents: individual, collective, and relational (prosocial) (e.g., Bartel, Blader&Wrzesniewski, 2007). Second, we establish the importance of identity structures or configurations (e.g., George &Chattopadhyay, 2005; Lipponen et al., 2005). We propose competing hypotheses regarding the effect of the ‘holistic’ configuration, in which all three identity contents are mutually enhancing, on prosocial behavior (e.g., Mael&Ashforth, 1992).Third, we illustrate – using qualitative and quantitative data – how individuals experience enhancement and conflict relationships among identities, and how the relationships between identities create unique structural configurations.In addition to holistic configuration, we identifythree other relevant structural configurations,which are labeled:the Focused Enhancement (enhancing relationships between prosocial and collective identities while the individualistic identity less enhanced), the Divided (conflicting relations between identities), and the Independent Self (minimal relationships between the identities). Finally, we test the relationship between identity configurations and three prosocial outcomes: amount donated to a charity, attitudes towards the organization organizing the event, and the participants’ fundraising network We find that those who experienced enhancement only within a subset of their identities (the focused enhancement) perform better on prosocial outcomes (raise significantly more funds, and approach widernetworkof supporters in their fundraising efforts) while those who experienced high enhancement across all three identities (the holistic configuration) held more positive attitudes towards the charity organization in charge of the event. We replicated our findingsin two experiments manipulating configurations of work-related identitiesin order to strengthen generalizability and causality. Overall, we demonstrate that the Holistic configuration is less effective than the Focused Enhancement configuration for prosocial behavior. We discuss the theoretical implications of examining the individual, collective, and relational context of identities for organizational scholarship.The paper advances organizational research on identities and prosocial behavior by taking a structural approach and suggesting that devoting one’s “whole self” to helping others may not be as effective as a more focused enhancement among identities. References Ashforth, B. E., Harrison, S. H., & Corley, K. G. 2008. Identification in Organizations: An Examiniation of Four Fundamental Questions. Journal of Management, 34: 325-374. Bartel, C., Blader, S. L.&Wrzesniewski, A. (Eds.). 2007. Identity and The Modern Organization. Mahwah, NJ: Lawrence Erlbaum. Dutton, J. E., Roberts, L. M., & Bednar, J. S. 2010. Pathways for positive identity construction at work: Four types of positive identity and the building of social resources. Academy of Management Review, 35(2): 265-293. Edwards, J. R., & Rothbard, N. P. 2000. 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