26.01.2026 Matthias Kloft successfully defends his PhD thesis

Matthias Kloft successfully completed his doctorate on 19.01.2026 with the title "The Psychometrics of Interval Responses".

Congratulations from the Psychological Methods Lab on this milestone!

The cumulative dissertation is based on the following three articles:

• Kloft, M., Snijder, J.-P., & Heck, D. W. (2024). Measuring the variability of personality traits with interval responses: Psychometric properties of the dual-range slider response format. Behav Res, 56(4), 3469–3486. https://doi.org/10.3758/s13428-024-02394-4
• Kloft, M., & Heck, D. W. (2025). Discriminant validity of interval response formats: Investigating the dimensional structure of interval widths. Educational and Psychological Measurement, 85(3), 565–588. https://doi.org/10.1177/00131644241283400
• Kloft, M., Siepe, B. S., & Heck, D. W. (2025a). The Interval Consensus Model: Aggregating Continuous Bounded Interval Responses. Psychometrika, 1–24. https://doi.org/10.1017/psy.2025.10058