Cognitive Scaffold

Preparing your thinking workspace

arrow_back_ios_new
MENTAL MODEL · M0273

Semmelweis Reflex

Semmelweis Reflex
Learn & MetacognitionHigh supportCognitive Science
Included
account_tree

Version 1.0.0 · Updated 2026-07-30

CORE DEFINITION

Refers to the instinctive rejection and resistance of the academic community to new evidence and methods, originating from Semmelweis's discovery that handwashing could prevent puerperal fever, which was ridiculed by his peers.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

The Semmelweis reflex or "Semmelweis effect" is a metaphor for the reflex-like tendency to reject new evidence or new knowledge because it contradicts established norms, beliefs, or paradigms.

anchor

Anchor fast decisions

When faced with new evidence that conflicts with existing beliefs, people instinctively reject it and attack the person presenting the evidence, rather than the evidence itself, to protect their cognitive comfort zone.

MINIMUM ACTION

In progress 0/4

Practice this model in one real situation:

Check to track your progress (stored locally)
Learning progress0%
account_treeGenealogyexpand_more
menu_bookReferencesexpand_more

Source support: Explicit

  • link
    en.wikipedia.orghttps://en.wikipedia.org/wiki/Semmelweis_reflexZH · Explicit
    verified

RELATED MODELS

Related model

The Mom Test

If you ask your mother whether your idea is good, concern for your feelings may encourage praise rather than useful feedback.

arrow_forwardRelated model

Catastrophic Forgetting

Catastrophic interference, also known as catastrophic forgetting, is the tendency of an artificial neural network to abruptly and drastically forget previously learned information upon learning new information.

arrow_forwardRelated model

Exploding Head Syndrome

A sleep-related experience of a sudden perceived loud noise around sleep onset or awakening, usually without pain.

arrow_forward