Research Programme

Charles Linden Institute Research Methodology Statement

A formal statement of the clinical population, outcome measurement instruments, ethical principles, and transparency standards governing the Institute's published research.

HomeResearchMethodology Statement

1. The Clinical Population

The Charles Linden Institute's research draws on clinical observation and outcomes data collected across thirty years of applied practice in the delivery of Threat Recalibration Therapy. The clinical population encompasses individuals presenting with all major anxiety disorder presentations across all severity levels, all age groups from childhood through late adulthood, and all cultural and demographic contexts across 42 countries.

2. Outcome Measurement

The primary outcome measure used in the Institute's clinical evaluation research is the Generalised Anxiety Disorder 7-item scale — the GAD-7 — as specified by NICE for the assessment of anxiety disorder severity in primary care settings. The GAD-7 is a validated, widely used self-report instrument with established sensitivity and specificity for detecting GAD and documented validity as a measure of anxiety severity across disorder presentations (Spitzer et al., 2006).

3. The NHS-Partnered Clinical Evaluation

The Institute's primary published clinical evaluation was conducted in partnership with NHS Shropshire. The evaluation recorded the following outcomes:

Mean pre-intervention GAD-718.28 (severe anxiety range)

Mean post-intervention GAD-72.84 (minimal anxiety range)

Mean reduction15.44 GAD-7 points

Percentage reduction84.5%

Statistical significanceZ = −6.802, p < .001

Participants remaining in severe category post-interventionZero

Full evaluation documentation is available on request from research@charleslinden.institute.

4. Ethical Principles

The Institute's research is conducted in accordance with the following principles:

·All client data used in research is anonymised prior to analysis.
·Participation in outcomes data collection is voluntary and informed.
·Data collection and storage comply with applicable data protection legislation including the UK GDPR.
·No personally identifiable information is included in any published research.

5. Transparency Statement

The Institute's Working Paper Series publishes research prior to formal peer review. This is consistent with the established working paper format used by major research institutions globally. The Institute is committed to transparency about the nature and limitations of its published research and welcomes academic engagement, correspondence, and constructive critique from the research community.