EVIDENCE BY CHAPTER

Chapter 29: The Biology of Reinvention

Evidence records connected to this chapter of The Human OS Manual.

The entries below follow the chapter’s printed endnotes into the digital Evidence Map.

The printed notes preserve the source trail attached to the first edition. The digital record adds a current interpretation of what the evidence supports, what it does not establish, and whether anything has changed since publication.

Research on adult identity transition describes experimentation with possible roles, integration of changing self-understanding, and continuity or reconstruction of social identities during life change.

Adaptation System · Pattern System · Community Meta-Layer

Book reference: Identity transitions involve experimentation, integration, and social continuity.

Last reviewed: August 11, 2026

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Stress can impair prefrontal functions involved in working memory and top-down cognitive control.

Strong human evidence

State System · Output System

Book reference: Stress can narrow attention, working memory, and top-down cognitive control., Under sustained load, compensatory effort can preserve performance while flexible cognitive control becomes less reliable., Stress can reduce flexibility and make habitual responses feel more available., Stress can narrow flexibility and make familiar responses easier to retrieve.

Last reviewed: August 11, 2026

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Stress can bias behavior toward habitual responding and away from flexible, goal-directed control.

Strong human evidence

Pattern System · State System · Output System

Book reference: Under pressure, the system often retrieves familiar responses before reflection catches up., Stress can reduce flexibility and make habitual responses feel more available., Stress can narrow flexibility and make familiar responses easier to retrieve.

Last reviewed: August 11, 2026

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Repeated behaviors can become linked to context cues and operate with increasing automaticity.

Established operating principles

Pattern System · Output System

Book reference: Defaults shape behavior by making one path easier to follow than alternatives., Repetition in stable contexts lets useful and limiting responses become automatic., Stable contexts support automaticity, but learned responses remain context-sensitive., Familiar contexts can cue established patterns and make older responses more available.

Last reviewed: August 11, 2026

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From the book chapter

The book chapter carries the argument. These entries preserve the evidence trail attached to its specific claims.