Methodology
The Science
Roveera
How the CALM Index™ is built — and why the measurement approach matters.
Evidence-based
Built on PHQ-9, GAD-7, and Cognitive Load Index — validated instruments used in clinical research.
Longitudinal tracking
Daily scoring reveals trajectories that single assessments cannot detect.
Wearable integration
Physiological data (HRV, sleep staging) complements self-report to reduce bias.
Validated instruments
Patient Health Questionnaire
A 9-item validated scale for detecting and measuring depression severity. Used in primary care and clinical research worldwide. Roveera uses PHQ-9 to measure the emotional and motivational dimensions of the Renewal score.
Generalised Anxiety Disorder Scale
A 7-item validated scale for measuring anxiety severity. Used clinically to screen for generalised anxiety disorder. Roveera uses GAD-7 to measure the arousal and dysregulation components of the Recovery score.
Cognitive Load Measurement
A composite measure of working memory demand, attentional control, and cognitive throughput. Roveera uses a validated CLI variant to measure the Reach dimension — focus capacity, output quality, and attention span.
Scoring architecture
| Dimension | Components |
|---|---|
| Recovery | Sleep quality, physiological restoration, autonomic balance |
| Renewal | Meaning, motivation, emotional restoration |
| Reach | Cognitive output, focus capacity, attention span |
Each dimension is scored 0–100. The composite CALM Index™ score weights dimensions based on your current depletion profile.
Personalisation
The CALM Index™ does not compare you to population norms. It tracks your individual baseline and measures deviation from it — making the system sensitive to changes that would be invisible in group comparisons.
This is particularly important for high-performers, whose functional baseline may differ significantly from population means. A score that indicates depletion for them may register as 'normal' in a population-referenced system.
Editorial standards
Clinical review
All content is reviewed against peer-reviewed literature before publication.
No sensationalism
We do not amplify anxiety or overstate risk. Precision and accuracy take precedence over engagement.
Transparent uncertainty
Where evidence is limited or contested, we say so explicitly.
Wearable device integration (Garmin, Fitbit, Oura) provides physiological grounding for self-report data. HRV and sleep staging data is incorporated into Recovery scoring when available — reducing the reliance on subjective perception alone.
View compatible devices →Related
See the science applied to your data.
The CALM Index™ assessment takes 8 minutes and gives you a personalised score built on the same validated instruments used in clinical research.
Get my free CALM ScoreFree · No card required · 8 minutes