Somatic Marker Hypothesis
Updated 2026-08-01
INTRODUCTION
English translation pending.
CORE DEFINITION
Proposed by Antonio Damasio and developed with Antoine Bechara in the 1990s. The hypothesis holds that when a decision is contemplated, past experience triggers bodily states such as a racing heart or a tight stomach, and these somatic markers bias attention toward or away from options before conscious reasoning finishes. The core proposition is that emotion is not noise in decision-making but part of its machinery. The key qualification comes from lesion studies: patients with damaged ventromedial prefrontal cortex reason normally on tests yet make disastrous real-life choices, showing that intact logic alone is insufficient.
SCAFFOLDING EFFECT
Reduce cognitive load
- Gut check: treat physical unease about a decision as a signal worth investigating. - Alarm versus evidence: log the bodily reaction, then test it against facts before acting. - Bias watch: check whether a strong body signal reflects experience or an old aversion.
Anchor fast decisions
The body learns which situations preceded bad outcomes and stores those pairings as emotional states. When a similar situation recurs, the insula and ventromedial prefrontal cortex reinstate the bodily state, which narrows the set of options under consideration before deliberate reasoning becomes involved. This fast, cheap filter prevents combinatorial overload, but it draws on whatever the body has learned, including biased or outdated experience.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Somatic_marker_hypothesisverified
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