Vita

2024– : Research Associate and PhD student at GESIS Mannheim, department KEO, team Training / KODAQS Academy
2022–2023: Research Associate at GESIS Mannheim, department SDM, team SDD / ZIS – Open Access Repository for Measurement Instruments
2021–2022: Research Associate at GESIS Mannheim,department SDM, team SDD / third-party funded project Foster
2010–2020: Extra-occupational studies of B.Sc. and M.Sc. Psychology at the FernUniversität in Hagen, research focus on Industrial and Organizational Psychology as well as Educational Psychology
Master Thesis: "Online Test Divergent Thinking – Short Version (OTD-S): Validation of a browser-based screening instrument for the measurement of creativity" (2019)
Bachelor Thesis: "Divergent age effects in intelligence diagnostics: Re-analysis of empirical data." (2015)
1998–2003: Studies of Graphic- and Communication Design, Lazi Akademie Esslingen; Diploma Thesis: "DIN standards – the measure of all things. An exhibition concept."

Service

• Scientific conceptualization and coordination of training and further education events as well as expert workshops of the KODAQS Data Quality Academy
• Creation of training courses in the field of data quality
• Scientific supervision as part of the visiting scientist program
• Research and publication activities in the field of data quality and survey methodology

Research

• Measurement and modeling of cognitive (intelligence, creativity) and non-cognitive abilities (personality)
• Consideration of developmental (e.g., biological age) and survey effects (instruction and timing) on data and outcome quality

• Evaluation of open-ended question formats (standardized, automated) in online assessments

• Data quality assessment of response scales in (online-)surveys

Publications

Publication

Journal article

Lechner, Clemens, Thomas Knopf, Christopher Napolitano, Beatrice Rammstedt, Brent Roberts, Christopher Soto, and Marion Spengler. 2022. "The Behavioral, Emotional, and Social Skills Inventory (BESSI): Psychometric properties of a German-language adaptation, temporal stabilities of the skills, and associations with personality and intelligence." Journal of Intelligence 10 (3): 63. https://doi.org/10.3390/jintelligence10030063.

Danner, Daniel, Beatrice Rammstedt, Matthias Blümke, Clemens Lechner, Sabrina Berres, Thomas Knopf, Christopher Soto, and Oliver P. John. 2019. "Das Big-Five Inventar 2: Validierung eines Persönlichkeitsinventars zur Erfassung von 5 Persönlichkeitsdomänen und 15 Facetten." Diagnostica 65 (3): 121-132. doi: https://doi.org/10.1026/0012-1924/a000218.

Lechner, Clemens, Ai Miyamoto, and Thomas Knopf. 2019. "Should students be smart, curious, or both?: Fluid intelligence, Openness, and interest co-shape the acquisition of reading and math competence." Intelligence 76. doi: https://doi.org/10.1016/j.intell.2019.101378.

Data/Software

Groskurth, Katharina, Thomas Knopf, Melanie Partsch, Isabelle Schmidt, and Matthias Blümke. 2020. Stata Code for the Development and Validation of Measurement Instruments in the Social Sciences: Psychometric Analyses (Dimensionality, Reliability, Measurement Invariance). doi: https://doi.org/10.7802/1.1985.

Staff

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