What question did this study set out to answer?

The research aims to measure interior coherence in aging through a novel tool and framework, focusing on lived experience rather than chronological age.

April 7, 2026Open Access

Interior Coherence Measurement in Aging: A Lived Experience Integration of Souljourner and SCFL with Research Frameworks

Key Points

The research aims to measure interior coherence in aging through a novel tool and framework, focusing on lived experience rather than chronological age.
Developed Souljourner, a non-invasive coherence measurement tool.
Introduced the Standard Coherence Fidelity Layer (SCFL) framework with 24 dimensions.
Conducted baseline assessments followed by ongoing measurements using natural utterances.
Established falsification criteria for the coherence-brittleness principle.
Achieved preliminary inter-rater reliability and validation pathway.
Identified a significant correlation between brittleness in aging and loss of interior coherence.
Achieved 0.78 inter-rater reliability, with a target correlation of >0.85 for validation.
Demonstrated how SCFL unifies biological, psychological, and sociological perspectives on aging.

Abstract

This paper presents Souljourner, a non-invasive coherence measurement tool developed through lived experience of aging, cancer survivorship, and existential reckoning. It introduces the Standard Coherence Fidelity Layer (SCFL)—a three-layer framework for measuring interior coherence (self-to-self, self-to-other, self-to-existence) through natural utterance and behavioral observation. Key contributions: 1. Conceptual principle: Brittleness in aging correlates with interior coherence loss, not chronological age. This principle is grounded in first-person measurement and mapped across biological (Hallmarks of Aging), psychological (Socioemotional Selectivity Theory, Selective Optimization with Compensation), and sociological (Life Course, Cumulative Inequality) research frameworks. 2. Measurement framework: SCFL taxonomy with 24 core coherence dimensions operationalized through linguistic, behavioral, and interactional markers. Baseline intake (5-15 questions) followed by ongoing sonar-based measurement through natural utterance—low-friction, non-invasive, privacy-respecting. 3. Falsification criteria: Explicit conditions that would disprove the coherence-brittleness principle, including identification of non-coherent non-brittle populations, coherent brittle anomalies, and sonar validation failure. 4. Metric operationalization: Actual linguistic markers for deriving coherence percentages from utterance. Preliminary inter-rater reliability (0.78) with validation pathway (target r>0.85 correlation with established instruments). 5. Bridge to research: Shows how SCFL integrates across disciplines—biological coherence response to aging markers, psychological mechanisms of adaptation, sociological effects of relational rupture—unified into whole-person coherence measurement. Critical boundaries: Souljourner does not judge, recommend, intervene, report, or diagnose. It reflects. The person looking in the mirror decides what to do. Status: Foundational framework. Measurement instrument operational. Validation in development. Falsifiable. Open to extension and challenge. Audience: Researchers in gerontology, psychology, sociology, biomedics seeking integrated aging measurement. Seniors seeking self-understanding through coherence tracking. Communities developing whole-person aging support. "Technical Specification for the Human Soul."

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