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RESEARCHERS

The Science of Friend Boundaries: Why Saying No Almost Never Costs What You Think

3 the researchers behind it — The belief that a limit will end a friendship is one of the most-studied prediction errors in social psychology. Assertiveness training entered clinic

Cornell University

Vanessa K. Bohns

Known for:Research on the underestimation-of-compliance effect — how hard it is to say no, and how badly we predict others' yeses and our own

Key findings

  1. 2008

    In experimental and field studies, help seekers underestimated by as much as 50% the likelihood that others would agree to a direct request — because they attended to the instrumental costs of helping while underweighting the social costs of refusing. ↗

  2. 2016

    Reviewing over a decade of studies, the underestimation-of-compliance effect is robust: targets of requests agree in part because refusing feels awkward and costly in the moment — the same discomfort that keeps chronic yes-sayers saying yes. ↗

Stanford Graduate School of Business

Francis J. Flynn

Known for:Research on favor exchange, help seeking, and the mismatch between how askers and helpers experience requests

Key findings

  1. 2003

    Among 161 employees of a large firm, being seen as generous raised a person's social status, but keeping favor exchange roughly balanced was what predicted their productivity — generosity and self-protection are separate levers, not opposites. ↗

  2. 2008

    With Lake (Bohns), showed that people asking for help systematically underestimate how likely others are to say yes — the asker's model of the interaction omits the social pressure the request itself creates. ↗

Bauer College of Business, University of Houston

Vanessa M. Patrick

Known for:Research on refusal framing and 'empowered refusal' — how the language of no changes whether it holds

Key findings

  1. 2012

    With Hagtvedt, showed that refusals framed as 'I don't' — invoking a standing personal policy — were more persistent and felt more empowering than 'I can't', which signals a negotiable external constraint and invites renegotiation. ↗

  2. 2023

    In The Power of Saying No, synthesizes this research into the framework of 'empowered refusal': a no delivered as a personal policy, grounded in one's own values, communicates conviction and draws less pushback than excuse-based refusals. ↗

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