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Difficulty: HardHuman Factors and Cognitive Biases

Match each clinical scenario describing a medical error or decision-making misstep to the most appropriate underlying cognitive bias.

  • A physician assumes a patient has a simple viral upper respiratory infection based on a quick triage note. Despite the patient later developing dullness to percussion and egophony, the physician prescribes supportive care only, failing to appropriately adjust the diagnostic plan.Anchoring Bias
  • A hospitalist recently cared for a patient with a catastrophic spinal epidural abscess that presented vaguely. During their next shift, they order urgent MRIs of the spine for three different patients who present with chronic, mechanical lower back pain without red flag symptoms.Availability Heuristic
  • A hospital committee overwhelmingly votes to adopt a new interventional protocol when it is presented as having a '95% complication-free rate,' but the same committee previously rejected the exact same protocol when data was presented as having a '5% severe complication rate.'Framing Effect
  • A clinical team suspects a patient's confusion is due to hepatic encephalopathy. The resident actively points out the patient's asterixis on rounds but dismisses and fails to document the patient's new focal motor weakness, attributing it to poor cooperation.Confirmation Bias

Answer

Scenario 1 matches Anchoring Bias, Scenario 2 matches Availability Heuristic, Scenario 3 matches Framing Effect, and Scenario 4 matches Confirmation Bias.
Each scenario perfectly aligns with a distinct cognitive bias. Anchoring involves sticking to an initial impression despite contradictory evidence. The availability heuristic involves overestimating the likelihood of a disease based on recent or memorable exposure. The framing effect demonstrates how the presentation format of data changes decision-making. Confirmation bias involves selectively noticing and documenting findings that fit a suspected diagnosis.

Step-by-Step Solution

1
Analyze the first scenario to identify the primary driver of the error.
The physician relied heavily on the first piece of information provided (the triage note).
This over-reliance on initial information to establish a set point, while failing to adjust for subsequent data, is the definition of anchoring bias.
2
Evaluate the second scenario for the source of the excessive testing.
The physician's judgment is clouded by a recent, severe case.
Estimating the probability of an event based on how easily an example comes to mind represents the availability heuristic.
3
Assess the third scenario involving committee decision-making.
Decisions completely flip based on whether the data is presented positively or negatively.
When cognitive processing is influenced by the presentation of information rather than the information itself, it demonstrates the framing effect.
4
Analyze the fourth scenario's documentation and diagnostic process.
The team selectively finds evidence for their theory while ignoring contradicting neurological signs.
Actively seeking out or interpreting information in a way that confirms one's preconceptions characterizes confirmation bias.

Key Concept

Identifying specific cognitive biases and human factors that lead to medical errors and diagnostic inaccuracies in clinical practice.
Estimated Time:2m 0s
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Topics

Human Factors and Cognitive Biases

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