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semmelweis_reflex
The Semmelweis reflex is the automatic tendency to reject new evidence or knowledge because it contradicts established norms, beliefs, or paradigms. Named after Ignaz Semmelweis, who was ridiculed for suggesting that doctors should wash their hands, this bias represents an institutional and psychological resistance to paradigm-shifting discoveries.
When a junior researcher presents data showing that a decades-old standard treatment protocol is less effective than a new approach, senior physicians dismiss the findings without examining the methodology, insisting that 'we've always done it this way.'
A nutrition professor dismisses a well-designed study challenging the long-held belief that dietary fat causes heart disease, saying: 'We've built entire public health guidelines on this foundation. One study isn't going to overturn decades of established science.' The study's methodology is never actually reviewed.
When a data analyst presents evidence that a company's flagship marketing strategy is producing negative returns, the senior marketing director responds: 'We've been doing this for fifteen years and it's always worked. I'm not going to throw out what we know based on a few numbers.'
Binary (yes/no) questions an LLM must answer to identify this aspect:
Is new evidence or a new finding being presented?
Type: binaryIs the evidence rejected primarily because it contradicts established norms or paradigms?
Type: binaryIs the rejection reflexive (without engagement with the evidence's merits)?
Type: binaryThe Semmelweis reflex is the automatic tendency to reject new evidence or knowledge because it contradicts established norms, beliefs, or paradigms. Named after Ignaz Semmelweis, who was ridiculed for suggesting that doctors should wash their hands, this bias represents an institutional and psychological resistance to paradigm-shifting discoveries.
Accepting new evidence that contradicts established knowledge threatens professional identity, institutional investments, and the cognitive effort already spent learning the old paradigm. Rejection is a defense mechanism that preserves existing mental models.
Evaluate new evidence on its methodological merits rather than its compatibility with existing beliefs. Create institutional processes that reward evidence-based updates to established practices.
The medical establishment initially rejected the germ theory of disease, the connection between H. pylori and ulcers, and many other breakthrough findings that contradicted prevailing wisdom.
Altering a generalization's definition to exclude a counter-example.
Failing to reject a false null hypothesis – missing a valid signal.
Filtering out contradicting information, only accepting confirming data.
Use these tools to detect, analyze, or train this aspect.