ADN Group

Influence and Information Collection

How to conduct interviews, be they interviews, audits, interrogations, negotiations, hearings or just informal discussions?

This training is built from the experience of instructor Marwan Mery and the many situations he has had to manage. This masterclass is complementary to the ADN Complex Negotiation Masterclass (Essentials, Advanced, Expert and Professional) and the Lie Detection Masterclass.


Anyone required to conduct interviews, audits, negotiations or high-stakes discussions.




day 1
day 2
In-person or remote
2 days / 14 hours
2 600€ / person
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The masterclass is hosted by Marwan Mery at our Paris headquarters.

Marwan Mery is a professional negotiator. He works, daily, with businesses, government organisations and NGOs to help resolve their complex situations, including critical cases (kidnapping and ransom, extortion, suicidal persons...), commercial high-stakes negotiations, major social conflicts, diplomatic relations, and even therapeutic consultations where patients refuse to take their medication. Consultant at the United Nations and guest speaker at Harvard University on the subject of complex negotiations, he is the author of several successful books. He also manages ADN Group, an agency of professional negotiator made up of thirty experts located in France and abroad. Marwan is a former officer® specializing in influence and crisis negotiation within the COS, the French special operations command.

Learn more


  • Structure your interview professionally
  • Subtly extract information
  • Adapt your behavior and communication according to the interlocutor
  • Transcend resistance through strategic questioning
  • Establish and maintain credibility in a degraded situation


Certified Qualiopi

ADN Group is a training organization that has obtained Qualiopi certification under the Training Action category.