---
title: Prof Dr. Samuel Greiff
url: "https://www.zib.education/en/team/prof-dr-samuel-greiff-1/"
date: 2025-04-07
modified: 2025-12-02
lastUpdated: 2025-12-02
---

# Prof Dr. Samuel Greiff

Dr. Lena Söldner
================

Interim National Team Lead & Research Associate | TUM

 Dr. Lena Söldner has been Interim National Team Lead & Postdoctoral Researcher at the Center for International Student Assessment (ZIB) since January 2025. Her research focuses on topics in the field of educational equity, social-emotional development, and foreign language proficiency among students.

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        <lena.soeldner@tum.de>

    Room 223, Marsstr. 20-22, 80335 München

  ![Profilfoto Lena Soeldner](https://www.zib.education/_assets/processed/ss_An6uY3vKZRxMkrIH0SBhB7bTZcoAosNFpi8dyuo8/q:85/c:3000:1863.3540372671:fp:0.5:0.5/rt:force/w:464/h:288/fn:Y3NtX0xlbmFfU29lbGRuZXJfMDJiZWQ1ZjBiMQ:t/cb:079a64b67d72f33b1fdda9dee25e1ded2ec96476/bG9jYWw6L2ZpbGVhZG1pbi9CaWxkZXIvTWl0YXJiZWl0ZXIvVFVNL0xlbmFfU29lbGRuZXIucG5n)         © Andreas Heddergott

  Vita
----

- Interim National Team Lead and Postdoctoral Researcher, Technical University of Munich, School of Social Sciences and Technology, Programme for International Student Assessment (PISA) since 01/2025
- Doctoral studies in psychology (dissertation title: “The Early Ontogeny of the Moral-Self Concept,” summa cum laude, 01/2020 – 07/2024).
- Research assistant at Ludwig Maximilian University of Munich, Department of Psychology (01/2020 – 10/2024)
- Master's degree in psychology at Julius Maximilian University of Würzburg (09/2016 – 09/2019)
- Research Associate at the Chair of Medical Psychology and Psychotherapy, Medical Sociology, and Rehabilitation Sciences at JMU Würzburg (07/2014 - 08/2018)
- Bachelor's degree in Psychology at Julius Maximilian University of Würzburg (04/2013 – 07/2016)

   Research Interests
------------------

- Educational equity
- Social and emotional development
- Self-concept
- Foreign language proficiency

   Activities
----------

- PISA 2025 management representative
- PISA 2025 Foreign Language Assessment
- PISA 2025 Emotion & Motivation
- MapIE – Scientific collaboration in EU project

   Selected Publications
---------------------

- Campos, D. G., Koskinen, A., Munkácsy, B., Rolfe, V., Patsis, P., Tóth, E**., Söldner, L**.... & Vainikainen, M. P. (2025). Educational inequalities in Europe: A scoping review of longitudinal studies in K-12 education. *Studies in Educational Evaluation*, *87*, 101523. <https://doi.org/10.1016/j.stueduc.2025.101523>
- **Söldner, L.**, & Paulus, M. (2025). The Moral Self in Formation: Caregiver Emotional Availability and Early Prosocial Behavior Predict Preschoolers' Moral Self-Concept. *Developmental Psychology*. <https://psycnet.apa.org/doi/10.1037/dev0001902>
- **Söldner, L**., & Paulus, M. (2024). Preschool children’s moral self-concept relates to their guilt-related behaviour. *European Journal of Developmental Psychology*. Advance online publication. [https://doi.org/10.1080/17405629.2024.2411970➚](https://doi.org/10.1080/17405629.2024.2411970)
- **Söldner, L.**, & Paulus, M. (2024). I help, therefore, I am? – A registered report on longitudinal inter-relations of the three-dimensional moral self-concept and prosocial behaviours in preschool children. *British Journal of Developmental Psychology.* [https://doi.org/10.1111/bjdp.12464➚](https://doi.org/10.1111/bjdp.12464)
- Christner, N., Sticker, R. M., **Söldner, L**., Mammen, M., & Paulus, M. (2020). Prevention for oneself or others? Psychological and social factors that explain social distancing during the COVID-19 pandemic. *Journal of Health Psychology.* [https://doi.org/10.1177/1359105320980793➚](https://doi.org/10.1177/1359105320980793)

   Find me
-------

[ResearchGate](http://o	https://www.researchgate.net/profile/Lena-Soeldner?ev=hdr_xprf) [LinkedIN](https://linkedin.com/in/lena-söldner-b28766285) [ORCID](https://orcid.org/0000-0002-7720-5990) [Google Scholar](https://scholar.google.de/citations?hl=de&tzom=-60&user=1cC1zKwAAAAJ)