EVIDENCE CLAIM

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.

Claim type
Contextual
Last reviewed
August 11, 2026

This page isolates one claim from the wider argument of The Human OS Manual.

The classification describes the evidence supporting this claim, not the Human OS framework as a whole.

What the evidence supports

Ibarra’s qualitative work describes experimentation with provisional professional selves. Mitchell and colleagues provide a conceptual review of identity integration and continuity across adulthood. Haslam and colleagues review social-identity processes that shape adjustment to life change.

What it does not establish

These sources do not validate “identity lag” or the chapter’s three-clock formulation as established scientific constructs, and they do not imply that every transition follows one sequence.

Context

The three-clock model—visible circumstances, embodied identity, and surrounding relationships/structures updating at different speeds—is the author’s synthesis. The sources provide neighboring transition literatures.

Sources

Sources are listed according to the role they play in this claim. One source may provide direct support, another may explain a mechanism, establish a limitation, or prevent an interpretation from becoming broader than the evidence allows.

  • Context

    Herminia Ibarra, “Provisional Selves: Experimenting With Image and Identity in Professional Adaptation,” Administrative Science Quarterly 44, no. 4 (1999): 764–791, https://doi.org/10.2307/2667055.

    journal article

    Qualitative evidence on experimenting with provisional selves in professional transition.

  • Context

    Lauren L. Mitchell, Jonathan M. Adler, Johanna Carlsson, Py Liv Eriksson, and Moin Syed, “A Conceptual Review of Identity Integration Across Adulthood,” Developmental Psychology 57, no. 11 (2021): 1981–1990, https://doi.org/10.1037/dev0001246.

    journal article · narrative review

    Conceptual review of identity integration, continuity, and reestablishment across adulthood.

  • Context

    Catherine Haslam, S. Alexander Haslam, Jolanda Jetten, Tegan Cruwys, and Niklas K. Steffens, “Life Change, Social Identity, and Health,” Annual Review of Psychology 72 (2021): 635–661, https://doi.org/10.1146/annurev-psych-060120-111721.

    journal article · narrative review

    Review of social-identity processes in adjustment to major life changes.

Where this appears in the book

The printed book preserves the claim inside the argument that gives it meaning. These references connect the current digital record to the first-edition evidence trail.

  • Chapter 29: The Biology of Reinvention

    Identity transitions involve experimentation, integration, and social continuity. · First edition, 2026

    View Chapter 29 evidence

Human OS connections

This claim connects to the following parts of the Human OS architecture. The module labels locate the claim inside the framework; they do not imply that the research source validates the architecture itself.

Read the argument in context

The Evidence Map separates one claim from the wider architecture. The Human OS Manual connects the evidence across biology, behavior, environment, recovery, adaptation, relationships, and time.