# 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.

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### 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

[Read article](/content/insights/research-methodologies/the-ambiguity-of-frequent-survey-participation-is-hyperactivity-a-signal-of-professional-fraud/index.html)

### 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

[Read article](/content/insights/data-quality-privacy-and-ethics/why-online-surveys-need-smarter-quality-assurance-now/index.html)

### 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

[Read article](/content/insights/research-methodologies/crafting-questionnaires-to-unlock-the-full-power-of-technological-fraud-detection/index.html)

### 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

[Read article](/content/insights/data-quality-privacy-and-ethics/the-rising-issue-of-bad-data-in-online-surveys-causes-and-contributing-factors/index.html)