Sebastian Berger — Greenbook
Sebastian Berger
Head of Science ReDem at Rep Data
Head of Science at ReDem, leading interdisciplinary research in AI, data analytics, and behavioral science. Award-winning management consultant, professor, and market research innovator.
The Ambiguity of Frequent Survey Participation: Is “Hyperactivity” a Signal of Professional Fraud?
Learn how to identify engaged respondents, detect bad actors, and improve data quality for more reliable research outcomes.
June 18, 2026
Why Online Surveys Need Smarter Quality Assurance Now
Survey fraud is evolving fast. Discover how AI-based coherence checks and behavioral tracking are key to protecting data quality in modern research.
May 20, 2025
Crafting Questionnaires to Unlock the Full Power of Technological Fraud Detection
Enhance fraud detection in online surveys with strategic design using open-ended, grid, and trap questions to maximize the effectiveness of advanced techniques.
November 29, 2024
The Rising Issue of Bad Data in Online Surveys: Causes and Contributing Factors
Learn how market researchers are enhancing defenses and redesigning surveys to combat the growing threat of online fraud in data collection.
November 1, 2024