The Exhausting Performance of Certainty in Medicine

There's a particular kind of exhaustion that comes not from the work itself, but from the performance of certainty. After years of practice, thousands of patients, and decisions made in seconds that others would deliberate over for hours, a quiet voice often remains: the one wondering if this is the case that finally gets missed, the one scanning the room during rounds, convinced everyone else sees something you don't.

That voice has several names. Understanding them may be some of the most useful clinical education never formally received.

Imposter Syndrome: The Sophistication Tax

Imposter syndrome is frequently dismissed as simple self-doubt, but it's more specific than that. First described by psychologists Pauline Clance and Suzanne Imes in 1978, it's a persistent belief that success is the product of luck, timing, or having fooled the people around you rather than genuine competence, along with a near-constant anticipation of being found out.

A striking and often-noted pattern is that it tends to show up in highly capable people. The popular reading of the Dunning-Kruger effect is that those who know the least are often the most confident, while those who know the most are more aware of how much they don't know. The research here is more nuanced than the popular summary, but the underlying idea is useful: in a field as complex as medicine, persistent doubt may partly reflect how deeply someone understands what can go wrong.

That doesn't make it comfortable. But it reframes imposter syndrome from a character flaw into something closer to a sophistication tax: the cognitive cost of knowing enough to see the risks. The real problem isn't that the voice exists. It's treating it as evidence rather than as noise.

External Locus of Control: The Trap of Borrowed Confidence

Locus of control, a concept developed by psychologist Julian Rotter, describes where a person believes the source of outcomes in their life resides. An external locus attributes results, good and bad, primarily to forces outside oneself: circumstances, luck, the approval of attendings, patient outcomes, peer recognition.

Medicine trains toward this orientation almost by design. Years of being evaluated, through shelf exams, board scores, milestone ratings, attending feedback, patient satisfaction scores, and peer review, create an implicit scorecard that never fully goes away.

The result is confidence that's perpetually borrowed: held together by positive feedback and dismantled by criticism. A single difficult interaction or a chart audit that surfaces a gap can undo months of accumulated self-assurance.

Developing a more internal locus of control doesn't mean becoming impervious to feedback or dismissing accountability. It means locating the sense of competence in values, process, and effort, rather than exclusively in outcomes that can't be fully controlled. It sounds like: I made the best decision available to me with the information I had, and letting that be enough.

What Confidence Actually Is, and Isn't

Confidence is not the absence of doubt. This is worth saying plainly, because medicine tends to select for people who conflate the two. Many physicians have trained alongside colleagues who performed certainty convincingly and spent years wondering why they couldn't access that same feeling.

Genuine confidence isn't the suppression of uncertainty. It's the tolerance of it: the capacity to act in the presence of not-knowing without that not-knowing becoming incapacitating. It's built from accumulated evidence, thousands of decisions that show an ability to navigate complexity, recover from error, and keep moving forward.

It's built slowly, through lived experience. It can't be thought into existence. It requires doing the thing, surviving the difficulty, and updating the internal record accordingly. Counterintuitively, that means the moments most worth avoiding, such as hard cases, critical feedback, and gaps that surface in peer review, are often exactly where durable confidence gets constructed.

A Note on the Culture We Practice In

It would be incomplete to discuss physician confidence without acknowledging the culture it forms in. Medicine has a long tradition of masking vulnerability, treating uncertainty as liability, and confusing confidence with competence so thoroughly that the wrong quality is sometimes rewarded.

The physician who admits uncertainty and picks up the phone often demonstrates more clinical sophistication than the one who decides without hesitation, yet rarely gets the same signal from the environment.

For anyone in leadership or teaching, what's modeled matters enormously. An attending who says, "I'm not certain, let's think through this together," gives every trainee in the room permission to not be certain, too. Psychological safety isn't soft culture work. It's the foundation on which honest clinical thinking happens.

Where to Go From Here

Understanding these patterns intellectually is the beginning, not the end. Shifting from conditional, externally sourced self-assurance toward something more stable and internal typically takes more than awareness alone: repeated practice, honest reflection, and often support from others who have done similar work.

The Bottom Line

The exhaustion of performing certainty comes from treating doubt as a defect rather than as part of practicing a complex craft well. Reframing imposter syndrome as a cost of sophistication, building a more internal source of confidence, and learning to act while uncertain are what make confidence durable, and a culture that models honest uncertainty helps everyone get there faster.

FAQ

What is imposter syndrome, and who first described it? Imposter syndrome, first described by psychologists Pauline Clance and Suzanne Imes in 1978, is a persistent belief that success stems from luck or having fooled others rather than genuine competence, accompanied by a constant anticipation of being "found out."

Why might highly capable physicians be especially prone to it? A deep understanding of a complex field often comes with a sharp awareness of how much remains uncertain and how much can go wrong. That awareness can feel like doubt even when competence is high, which is why it's sometimes called a "sophistication tax."

What is locus of control, and why does it matter for confidence? Locus of control, developed by psychologist Julian Rotter, describes whether someone attributes outcomes mainly to internal factors (their effort, values, decisions) or external ones (circumstances, others' approval). An external orientation tends to produce confidence that rises and falls with feedback.

Is confidence the same as feeling certain? No. Confidence is better understood as the capacity to act effectively despite uncertainty, built over time through experience, rather than the absence of doubt.

How can leaders and teachers help others build confidence? Modeling honest uncertainty, such as saying "I'm not sure, let's think this through together," builds psychological safety and gives others permission to think openly rather than perform certainty.

Note: This post references Clance and Imes (1978), Rotter's locus of control work, and the Dunning-Kruger effect. It's worth verifying exact attributions and dates against the original sources before publishing.