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

Nuts About Leadership 2025, 2, 4 https://doi.org/10.5281/zenodo.17556248 Commentary The Confidence Imperative: Why Leaders Pay a Steep Price for Expressed Uncertainty David Smith 1 1 [email protected] Abstract 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 advicetaking, 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 confidencesignaling 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. Keywords: confidence signaling; expressed uncertainty; humility paradox; leadership influence; leadership research The paper “Does Expressing Uncertainty Help or Harm Leaders?” (hereafter, the focal study) by Alzahawi and Flynn (2025) presents a rigorous, multi-study investigation into a longstanding tension in leadership scholarship: whether leaders gain or lose influence by vocalizing uncertainty.1 Through five preregistered experiments, the authors find a robust negative linear relationship between expressed uncertainty and multiple indicators of social influence. Leaders who hedge, qualify, or otherwise signal doubt are rated lower on effectiveness, warmth, and competence; they are less likely to be selected, followed, or rewarded. No evidence emerges for curvilinear, positive, or moderated effects involving followers’ need for closure. Below, I offer a structured analysis that critically engages the work while situating it within the broader leadership literature. The focal study’s primary strength lies in its methodological discipline and theoretical ambition. By adopting a Stage 2 Registered Report format, the authors lock in hypotheses, design, and analytic plans before data collection, dramatically reducing p-hacking risks. This transparency, paired with open data and materials, sets a gold standard for replicability. The consistent negative effect across subjective ratings and behavioral Received: 2025-10-15 Revised: 2025-10-30 Accepted: 2025-11-03 Published: 2025-11-10 Citation: Smith, D. (2025). The Confidence Imperative: Why Leaders Pay a Steep Price for Expressed Uncertainty . Nuts About Leadership, 2(4), 3 72–375. DOI: 10.5281/zenodo.17556248 Copyright: © 2025 by the author. Submitted for possible open access publication under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Nuts About Leadership 2025, 2, 4 373 outcomes, such as advice-taking, leader selection, and resource allocation, lends ecological weight to the core claim: expressed uncertainty is costly for leaders. Yet several weaknesses temper this contribution. First, the stimuli are predominantly textual vignettes and short video clips featuring hypothetical or generic leaders (e.g., “Project Manager A”). While controlled, these low-fidelity contexts may inflate the penalty for uncertainty by stripping away compensating cues like charisma, track record, and relational history that real leaders deploy. Second, the uncertainty manipulations are blunt: leaders either “express certainty” or “express uncertainty” in a binary fashion. Real-world leaders modulate uncertainty along a continuum and pair it with mitigating phrases. The study thus risks conflating clumsy hedging with thoughtful calibration. Third, the follower samples, mostly U.S. Prolific workers, are convenience populations with limited leadership exposure. Cultural and occupational boundary conditions remain untested. Despite these caveats, the focal study meaningfully advances the field by falsifying two plausible counter-hypotheses: moderate uncertainty as optimal (inverse-U) and follower intolerance of uncertainty as a moderator. These null results are theoretically informative, pruning the hypothesis space and redirecting attention toward linear confidence-signaling models. Leadership research has long oscillated between confidence-as-competence and humility-as-authenticity narratives. Classic status-signaling theories posit that confidence broadcasts ability and resolves coordination problems in groups, yielding influence. Meta-analytic evidence supports this: leader self-confidence correlates positively with follower ratings of effectiveness (r ≈ .30) and emergence (r ≈ .25). Conversely, the “vulnerability wave” spurred by work on humble leadership, psychological safety, and authentic self-disclosure argues that admitting limitations humanizes leaders and invites collaboration. Experimental demonstrations show that leaders who own mistakes or reveal personal struggles can boost trust and team creativity, particularly in learning-oriented climates.2 The focal study sits at this fault line. Its negative linear finding aligns with signaling theory but appears to contradict humility research. Three gaps in prior work help explain the apparent inconsistency. First, most humility studies operationalize vulnerability as past-oriented admissions rather than future-oriented uncertainty. Temporal framing matters: backward-looking transparency signals accountability, whereas forward-looking doubt signals predictive weakness. Second, humility benefits often emerge in longitudinal or relational contexts where leaders have established credibility; the focal study’s crosssectional, stranger-to-stranger designs preclude such buffering. Third, many pro-humility experiments measure proximal outcomes (trust, creativity) rather than distal influence metrics (selection, reward allocation) that the focal study prioritizes. Thus, the focal study does not refute humility research so much as delimit its scope: expressing uncertainty about future performance in zero-acquaintance or high-stakes evaluative settings is toxic for influence, even if confessing past errors in ongoing relationships is not. The five experiments escalate in realism and consequence. Study 1 (N=301) uses text vignettes; Study 2 (N=398) adds video; Study 3 (N=502) introduces incentivized advicetaking; Study 4 (N=604) measures leader selection in a public-goods game; Study 5 (N=802) tests resource allocation. Manipulation checks confirm that uncertainty expressions register as intended without contaminating perceived humility or authenticity. Dependent variables span self-report (perceived competence, warmth, effectiveness) and behavioral domains, reducing mono-method bias. Analyses are appropriately conservative: linear regressions with bootstrapped confidence intervals, Bayesian model comparisons favoring the negative-linear specification, and equivalence tests rejecting curvilinear and interaction alternatives. Effect sizes are Nuts About Leadership 2025, 2, 4 374 modest but consistent (β ≈ –.20 to –.35 standardized), and aggregation via mini-meta-analysis yields precise estimates (95% CI excludes zero). Validity is bolstered by preregistration and replication across modalities, yet external validity remains a concern. Participants never interact with leaders over time, nor do they observe outcomes that could vindicate uncertain forecasts. In field settings, a leader who says “I’m uncertain, so let’s run two pilots” might outperform a confident bluffer once results arrive. The lab’s compressed time horizon likely amplifies confidence premiums. By conclusively documenting costs to express uncertainty, the focal study delivers three practical takeaways. First, leadership development programs should train executives to articulate confidence without arrogance, teaching phraseology (“Data suggest X, with 90% probability”) rather than blanket certainty. Second, crisis communication guidelines must distinguish epistemic uncertainty (acknowledged unknowns) from actionable resolve; the former erodes influence unless paired with contingency plans. Third, selection committees evaluating early-stage leaders (e.g., pitch competitors, political primaries) should discount over-confident rhetoric, recognizing that uncertainty avoidance may mask incompetence. Theoretically, the null moderation by need for closure challenges epistemic-motivation models of leadership perception. Future influence research must specify which follower traits actually gate confidence effects, perhaps power distance or growth mindset instead. Integrating the focal study with related streams yields a contingency framework. Confidence signaling dominates in zero-acquaintance, high-stakes, or rank-order evaluations, settings where followers lack diagnostic information beyond verbal cues.³ By contrast, vulnerability pays in established teams pursuing innovation, where psychological safety trumps status cues.⁴ A recent field experiment with software engineers found that managers who disclosed implementation doubts early in sprint planning increased team idea generation but decreased external stakeholders’ funding recommendations.⁵ The focal study maps onto the latter stakeholder context. Gender may further moderate: women leaders face steeper penalties for uncertainty due to prescriptive stereotypes demanding warmth alongside competence.⁶ Although the focal study controls for leader gender, interaction tests are underpowered; meta-analytic synthesis is needed. Three contributions stand out. First, the study is the first preregistered, multi-method falsification of curvilinear and moderated uncertainty effects, null results that are publishable only under Registered Report protocols. Second, it introduces incentivized leader selection and resource allocation as influencing outcomes, moving beyond Likert scales. Third, the mini-meta-analysis across 2,607 participants provides the most precise estimate to date of the uncertainty penalty (d ≈ = 0.45). Several avenues merit pursuit. (1) Longitudinal field studies tracking real leaders’ uncertainty language (via email corpora or earnings calls) against objective performance and promotion outcomes. Natural language processing can quantify hedging intensity continuously. (2) Interaction paradigms where followers observe leader forecasts resolve over time; vindicated uncertainty may rehabilitate influence. (3) Cross-cultural replication in high-uncertainty-avoidance societies (e.g., Japan, Greece) versus low (e.g., Denmark). (4) Intersectional experiments testing whether demographic match mitigates uncertainty costs. (5) Intervention trials train leaders in “confident calibration”, expressing probability ranges without eroding perceived competence. In sum, the focal study delivers a sobering but clarifying message: in most evaluative contexts, leaders are punished for uncertainty. Rather than debating whether confidence helps or harms, scholarship should now map the boundary conditions under which each signal prevails. Nuts About Leadership 2025, 2, 4 375 References 1 Shilaan Alzahawi and Francis J. Flynn, “Does Expressing Uncertainty Help or Harm Leaders?” The Leadership Quarterly 36, no. 5 (2025): 101880, https://doi.org/10.1016/j.leaqua.2025.101880. 2 Lundqvist, Daniel, Andreas Wallo, Alan Coetzer, and Henrik Kock. “Leadership and learning at work: A systematic literature review of learning-oriented leadership.”Journal of Leadership & Organizational Studies, 30, no. 2 (2023): 205-238. https://doi.org/10.1177/15480518221133 3 Belkin, Liuba Y., and Naomi B. Rothman. “Do I trust you? Depends on what you feel: Interpersonal effects of emotions on initial trust at zero-acquaintance” Negotiation and Conflict Management Research,10, no. 1 (2017): 3-27. https://doi.org/10.1111/ncmr.12088 4 Perez, Jennifer E. Leading with Vulnerability: Exploring the Effects on Perceptions of Psychological Safety and Leader Competence. The George Washington University, 2024. https://scholarspace.library.gwu.edu/concern/gw_etds/4q77fs254 5 Khanagha, Saeed, Henk W. Volberda, Andreas Alexiou, and Maria Carmela Annosi. “Mitigating the dark side of agile teams: Peer pressure, control, and the innovative output of agile teams.”Journal of Product Innovation Management, 39, no. 3 (2022): 334-350. https://doi.org/10.1111/jpim.12589 6 Mitchell, Rebecca L., James G. Matusik, and Russell E. Johnson. “Backlashes or boosts? The role of warmth and gender in relational uncertainty reductions.” Human Resource Management, 62, no. 6 (2023): 851-865. https://doi.org/10.1002/hrm.22166 Disclaimer/Publisher’s Note: The statements, opinions, and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of Nuts About Leadership and/or the editor(s). Nuts About Leadership and/or the editor(s) disclaim responsibility for any injury to people or property resulting from any ideas, methods, instructions, or products referred to in the content.