Unpacking the Microdynamics of Multiplex Peer Developmental Relationships: A Mutuality Perspective

Peer developmental relationships—informal arrangements between pairs of individuals who take an active interest in and concerted action to advance one another's careers—offer a valuable alternative to formal mentorships. Despite recognition that peer developmental relationships have the potential to jointly provide career and psychosocial support (i.e., multiplexity) and that relationships embodying multiple support dimensions are indispensable, a paucity of work investigates what factors contribute to their dynamics and persistence over time. To address this issue, we integrate the microfoundations of network dynamics and mutuality perspectives to identify why and when social processes—specifically, reciprocity, trust, and trust asymmetry—operate to form, strengthen, or maintain multiplex peer developmental relationships. To test our hypotheses, we collected three waves of data over one-and-a-half years from a cohort of individuals participating in a leadership development program. Using variations of the Quadradic Assignment Procedure (QAP) to investigate dyad-level dynamics, our results generally suggest that (over and above demographics and network characteristics) the provision of psychosocial support relatively early in the peer-to-peer relationship is likely to evolve into a more complex, high-quality relationship comprised of both psychosocial support and career support (i.e., a multiplex peer developmental relationship). Perhaps more importantly, the social processes capturing mutuality further increased the likelihood that multiplex developmental relationships would develop and persist over time. Our results demonstrate that mutuality is both generative and resolute in nurturing multiplex developmental relationships.