The Cognitive Signature Authenticity Assessment (CSAA) analyzes natural language: written or spoken: to determine the cognitive authenticity of a narrative. It does not detect lies through behavioral cues or physiological responses. Instead, it reads the cognitive signature embedded in how a person constructs language.
Every authentic experience leaves a distinct cognitive fingerprint in language. Fabricated narratives, rehearsed statements, and deceptive accounts produce measurably different cognitive patterns. CSAA identifies these differences through a deterministic, reproducible analytical pipeline.
The methodology is described in two papers on SSRN: the foundational paper (DOI: 10.2139/ssrn.6447802) and the mathematical foundations (DOI: 10.2139/ssrn.6484919). A companion manuscript is under peer review at Frontiers in Psychology (MS 1834364). SSRN papers are preprints and have not undergone formal peer review. Calibration showed clear separation between authentic and constructed narratives on the discriminant dimensions. Formal sensitivity and specificity metrics are under development.
Five Scoring Dimensions
- Narrative Coherence: structural integrity and temporal consistency of the account
- Cognitive Load: linguistic markers of processing effort inconsistent with genuine recall
- Emotional Authenticity: whether affective markers match the expected pattern for the described experience
- Detail Consistency: whether sensory and contextual details are self-consistent across the narrative
- Temporal Markers: whether time-related language patterns are consistent with genuine episodic memory
Fabricated Narrative
Constructed account with no basis in genuine experience. Characterized by absent cognitive load markers, implausible detail uniformity, and missing sensory fragmentation typical of real memory.
Coached Statement
Narrative that has been rehearsed or guided by a third party. Detected through unnatural narrative structure, vocabulary inconsistency with the speaker’s baseline, and scripted emotional cadence.
Partial Deception
Account containing a mix of authentic and fabricated elements. The system identifies segment-level shifts in cognitive signature, pinpointing where the narrative transitions between genuine recall and construction.
Escalation Pattern
Narrative exhibiting progressive exaggeration or severity inflation over multiple accounts. Detected through trajectory analysis across longitudinal samples, comparing cognitive signature stability over time.
Law Enforcement
Evaluate witness statements, suspect narratives, and victim accounts for cognitive authenticity. Provides objective, quantified evidence to supplement traditional investigative methods.
Legal & Litigation
Support Daubert-admissible expert testimony with published methodology, quantified error rates, and reproducible results. Pre-trial assessment of deposition authenticity.
Insurance Investigation
Detect fraudulent claims through cognitive signature analysis of claimant statements. Identify exaggeration patterns, coached narratives, and fabricated injury accounts.
Corporate Security
Internal investigation support. Evaluate employee statements during HR investigations, compliance reviews, and workplace incident assessments.
Military & Intelligence
Assess cognitive authenticity of debriefings, intelligence reports, and source statements. Complement existing counterintelligence methodologies.
Corrections & Probation
Monitor cognitive patterns in offender narratives. Detect risk escalation, deception in parole assessments, and treatment compliance evaluation.
Input
Narrative received. SHA-256 hash generated. Timestamp and source recorded.
Processing
NOUS pipeline analysis. Each stage output hashed. Full audit trail preserved.
Scoring
Five-dimension assessment. Deterministic: identical input always produces identical output.
Report
Federal forensic format. Examiner qualifications, methodology, findings, limitations.
Purge
Source data purged within 72 hours. Only hashed report retained.
- NOSS 12-sector profile
- Beverly Index score
- Archetype match
- 1-page PDF summary
- SHA-256 chain of custody
- Full sector-by-sector analysis
- Beverly Index with interpretation
- Archetype match + concern flags
- Authenticity assessment
- Trajectory assessment (multi-artifact)
- 5: 8 page PDF report
- Everything in Standard Report
- Multi-artifact trajectory analysis
- Daubert methodology documentation
- Expert testimony preparation
- Unlimited follow-up consultation
- Comprehensive PDF report
Important Disclosure
CSAA is an investigative support tool. It does not determine guilt or innocence. Results are probabilistic assessments of cognitive authenticity and should be used as one component of a comprehensive investigation. Beverly Index LLC does not render legal opinions. The NOST methodology is described in a preprint on SSRN (DOI: 10.2139/ssrn.6447802), with a companion manuscript under peer review at Frontiers in Psychology (MS 1834364). Formal sensitivity and specificity metrics are under development. All assessments are conducted by or under the supervision of the Principal Investigator. CSAA reports are designed to meet Daubert admissibility standards; however, admissibility determinations are made by the presiding court.