Betrayal is not just a simple disappointment. Recent research reveals its profound impacts on the brain, relationships and trust, with lasting consequences for mental health and the social fabric.Curiosity, Health and Culture, emotions, treason, AFE PACKAGE, newsBetrayal is not just a simple disappointment. Recent research reveals its profound impacts on the brain, relationships and trust, with lasting consequences...
Betrayal, often reduced to heartbreak, turns out to be an experience with much deeper repercussions. Scientific advances in recent years, particularly in 2025, demonstrate that it directly affects brain structures, lastingly modifying our ability to trust. This reality calls into question preconceived ideas about the speed of healing and the responsibility of victims.
According to the Trauma Theory of Betrayal, developed by psychologist Jennifer Freyd, the brain can activate a defense mechanism called betrayal blindness. This psychological survival reflex explains why some people do not perceive the warning signs, particularly in relationships of emotional or professional dependence. It is not a weakness, but an unconscious adaptation to preserve mental balance.
Neurobiology studies published at the end of 2025 confirm these effects. Betrayal causes hyperactivation of the amygdala, leading to anxiety and hypervigilance, while the hippocampus suffers memory problems. The prefrontal cortex, responsible for decision-making and rational analysis, sees its functions altered. Thus, the brain no longer functions normally for a significant period of time, which justifies the slow healing process.
Contrary to injunctions to “turn the page,” research in relational psychology indicates that a major betrayal requires on average two to five years for complete emotional healing. This duration, validated by academic summaries on Cairn.info and HAL SHS, shows that feeling pain a year or two after the incident is the human norm. It is therefore essential to recognize this temporality to avoid blaming victims.
Betrayal goes beyond the private sphere to extend to institutions. The concept of institutional betrayal, expanded by Jennifer Freyd in 2025, describes how organizations can harm those they must protect. The DARVO mechanism, often observed, consists of denying the facts, attacking the whistleblowers and reversing the roles. This phenomenon, documented by The Center for Institutional Courage, compounds the trauma by creating a double betrayal.
In the professional world, research in the sociology of organizations, such as that of the journal Horizons in 2026, highlights that the feeling of betrayal is a major driver of disengagement. Broken promises and speeches disconnected from reality erode trust. Managerial trends for 2026 thus emphasize human leadership and consistency between words and actions to rebuild this trust.
The philosopher Vincent Cespedes, in his work from 2025, evokes a “society of betrayal” marked by micro-betrayals such as ghosting and digital manipulation. He proposes a “traitorometer” based on four pillars: gift, freedom, resistance to oppression and safety. This philosophical approach advocates vigilant loyalty, opposed to naive loyalty, encouraging conscious trust rather than total distrust.
In short, betrayal is a complex experience that changes the brain, requires prolonged healing time, and can emanate from institutions. The solution lies in enlightened trust, based on lucidity and mutual respect, making it possible to navigate in a world where relationships are increasingly weakened.
To go further (sources)
- Jennifer Freyd, University of Oregon – Betrayal Trauma Theory & Institutional Betrayal
- The Center for Institutional Courage – research on the response of institutions to harm
- Cairn.info / HAL SHS – theses and studies on relational and organizational betrayal
- Open Edition Journals – cultural, legal and social approaches
- Vincent Cespedes (2025) – philosophical works on loyalty and counter-betrayal
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