Pride and Prognosis: The Perils of First Impressions in Diagnosis

When Assumptions Write The Chart Before We Do

"It is particularly incumbent on those who never change their opinion, to be secure of judging properly at first."
— Jane Austen, Pride and Prejudice

In the opening pages of Pride and Prejudice, Elizabeth Bennet sizes up Mr. Darcy in an instant. Proud. Cold. Unworthy of her attention. She's so certain of her judgment that it takes a letter, reflection, and considerable time before she realizes she was wrong.

Healthcare suffers from the same problem.

Clinicians meet patients in brief windows. They form impressions quickly, sometimes in the first 30 seconds. And those impressions, whether accurate or not, can shape everything that follows: which questions get asked, which symptoms get explored, which diagnoses get considered.

Diagnostic errors affect 10 to 15% of cases, and cognitive biases contribute to diagnostic inaccuracies in 36 to 77% of scenarios (Vally et al., 2023). These aren't failures of medical knowledge. They're failures of thinking: rushed reasoning, unconscious assumptions, and the dangerous tendency to stop looking once we think we've found the answer.

Just as Austen's characters misjudge based on surface impressions, modern clinicians can mislabel patients based on opening moments. A missed timeline. A distracted interview. An incomplete story. And the real issue (the tumor, the autoimmune flare, the rare infection) goes unseen.

The Cognitive Price of Assumptions

Human cognition relies on two systems: fast, intuitive judgments (System 1) and slower, analytical reasoning (System 2) (Vally et al., 2023). System 1 helps clinicians manage packed schedules, high patient loads, and limited time. It's efficient. It's often right.

But when unchecked, that "fast brain" opens the door to bias.

Anchoring bias occurs when a provider fixates on a detail (a prior diagnosis, a triage note, a demographic characteristic) and fails to adjust when new symptoms emerge. It's the clinical parallel to Mr. Darcy's instant dismissal of Elizabeth as "tolerable, but not handsome enough to tempt me." The rest of the encounter is colored by that first glance.

Recent pediatric case studies illustrate this perfectly. In one case, abdominal pain in a teenager was dismissed as "growing pains" until worsening symptoms revealed celiac disease. In another, shoulder pain was misread as a sports injury until imaging uncovered a spinal tumor. In each case, anchoring and confirmation bias (where the clinician seeks evidence supporting their initial impression) delayed accurate diagnosis (Scott et al., 2025).

Research on diagnostic errors found that anchoring bias appeared in 60% of cases, premature closure in 58.5%, and availability bias in 46.2%. Emergency departments were the most common setting for these errors, with the highest frequency occurring during night shifts (Vally et al., 2023).

These thinking traps don't just affect complex cases. Even routine decisions (whether to test further or assume reassurance) are shaped by unseen bias. One study found that diagnostic accuracy improved when providers used reflective practice, though this benefit was primarily seen in experienced clinicians rather than students, suggesting that debiasing strategies require cognitive resources that may be limited under heavy workload (Vally et al., 2023).

As Austen's characters teach us, assumptions feel logical at the time. But clarity often comes only after reflection. And sometimes, after harm.

Listening Beyond the First Glance

Elizabeth Bennet's change of heart begins not with confrontation, but with a letter. Darcy explains himself. She rereads it. And slowly, her narrative of him begins to shift.

Medicine needs that kind of second reading.

Novak et al. (2020) found that patient stories, shared in open ended and reflective ways, helped clinicians better understand complex experiences and led to more relevant care planning. These weren't high tech tools. They were narratives. Illness stories, when allowed to unfold fully, help build the coherent timeline clinicians need to form accurate hypotheses.

Listening does more than gather data. It protects against diagnostic shortcuts. In one quality improvement initiative, providers were trained to listen actively for just one uninterrupted minute before redirecting. That single minute prevented premature closure in multiple cases (Tran et al., 2024).

Similarly, tools like the AHRQ's "Be the Expert on You" note sheet provide structure for patients to organize their concerns before the visit. These tools invite patients to present their stories in a coherent arc, so clinicians don't have to infer it mid interview. And when patients present clear narratives, it becomes harder for clinicians to stick to inaccurate scripts.

Becoming the Expert on You

Bias isn't just a clinician problem. Patients often struggle to articulate their stories clearly, especially when they feel rushed or overwhelmed. But structured preparation can help patients avoid being misheard. At Storyline, we guide patients to clarify their timeline, top concern, support system, and any open questions. Research supports this: when patients use structured pre visit tools, diagnostic uncertainty drops and mutual understanding improves (Tran et al., 2024).

The clinician's role, then, is to slow down enough to hear what's being said and to wonder what might not have been. Metacognition (thinking about how we think) is a protective layer. When clinicians pause to ask, "What else could this be?" or "What if I'm wrong?" they loosen the grip of bias (Vally et al., 2023).

Medical education increasingly recognizes that simply increasing physicians' familiarity with cognitive biases may be one of the best strategies to decrease bias related errors. Two educational approaches show particular promise: guided reflection, which involves searching for alternative diagnoses with supportive feedback from a mentor, and cognitive forcing strategies, which involve consciously considering diagnoses that don't come intuitively (Harris et al., 2022).

Peer learning matters too. Reviewing diagnostic missteps as a group, and naming the types of bias involved, helps providers better recognize them in real time. This reflective practice is medicine's equivalent of Austen's most powerful moments: not dramatic revelations, but quiet honesty.

Pride, Prejudice, and Practice

Mr. Darcy believed he saw Elizabeth clearly. Elizabeth believed she knew Mr. Darcy's nature. Both were wrong. The same happens in healthcare. A provider sees a "young, anxious woman" and assumes nothing serious. A patient sees a rushed provider and withholds symptoms they don't think will be taken seriously. The story derails before it begins.

But Austen's world, and medicine's best moments, show us that stories can be revised.

Clinicians who ask better questions, challenge their assumptions, and listen to more than the chief complaint improve their diagnostic accuracy. Patients who come prepared, organize their story, and assert their concerns create space for better care.

This is Storyline's purpose: to build the clarity, structure, and self advocacy that helps the right story get heard. Because first impressions may be human, but they shouldn't be final. And no one's health should hinge on a misread opening line.

References

Brett, A. S., & Goodman, C. W. (2021). First impressions: Should we include race or ethnicity at the beginning of clinical case presentations? New England Journal of Medicine, 385(27), 2497–2499.

Harris, I. M., Danner, C. C., & Satin, D. J. (2022). How does cognitive bias affect conversations with patients about dietary supplements? AMA Journal of Ethics, 24(5), E368–E375.

Novak, L. L., Peak, D. A., Hartnett, M., & Benneyan, J. C. (2020). Patient stories can make a difference in patient centered research design. Journal of Patient Experience, 7(6), 1438–1444.

Scott, P., Sim, L., Soma, D., Madsen, B. E., & Thorsteinsdottir, B. (2025). Sprains, strains and growing pains: Managing cognitive bias to facilitate timely diagnosis in pediatric sports medicine. Children, 12(6), 784.

Tran, A., Blackall, L., Hill, M. A., & Gallagher, W. (2024). Engaging older adults in diagnostic safety: Implementing a diagnostic communication note sheet in a primary care setting. Frontiers in Health Services, 4, 1474195.

Vally, Z. I., Khammissa, R. A. G., Feller, G., Lemmer, J., & Feller, L. (2023). Errors in clinical diagnosis: A narrative review. Journal of International Medical Research, 51(8), 03000605231162798.