The Confidence Imperative: Why Leaders Pay a Steep Price for Expressed Uncertainty

This commentary evaluates a new paper on the effects of leaders expressing uncertainty on social influence. Through a series of preregistered experiments, the study establishes a consistent negative linear relationship: uncertainty expressions diminish perceived leader effectiveness, warmth, and competence, and reduce behavioral outcomes such as advice-taking, selection, and reward allocation. No support emerges for curvilinear, positive, or moderated effects via followers’ need for closure. Strengths include methodological rigor, transparency, and multi-method convergence. Limitations involve low-fidelity stimuli, binary manipulations, and convenience samples. Situated against conflicting confidence-signaling and humility literatures, the findings delimit vulnerability benefits to relational, learning-oriented contexts while affirming confidence premiums in zero-acquaintance evaluations. Original contributions include falsification of plausible alternatives and the use of incentivized influence metrics. Implications urge nuanced communication training and boundary-condition mapping. Future directions encompass longitudinal field studies, outcome-contingent designs, and cultural replications. The work clarifies a core leadership tension: in most evaluative settings, uncertainty erodes influence.