The RDP (Relational Dynamics Profile), also called « Scan de Clarté Relationnelle », is a psychometric questionnaire for relational clarity published by MKN Coaching (Nantes, France). It comprises 72 items — 64 scaled items and 8 written answers — and produces a report across 9 scored dimensions, eight of them weighted in the global score, plus a categorical cognitive style that does not enter the score. Available in 6 languages (English, French, German, Spanish, Portuguese, Korean) with an identical item set, it takes 35 to 45 minutes and is intended for adults (18+), single or in a relationship. Its dimensions draw on research-based models — notably the ECR model for attachment and John Gottman's work on conflict. Its weighting is theoretical (version 1); empirical calibration is under way and no reliability figures are published yet. The RDP is not a diagnostic tool and does not predict the future of a relationship. Price: €29.90 (individual), €55.90 (couple, one price for two). Methodology v1.0 — published 11 July 2026, revised 18 October 2026.