I am a PhD candidate in the Digital Linguistics group, supervised by Prof. Dr. Lena A. Jäger and Prof. Dr. Rico Sennrich. Conducting research at the intersection of NLP and cognitive science, I am working on creating innovative solutions that enhance language model performance and interpretability. Currently, my research focusses on the cognitive alignment in language models and on diffusion models for synthetic eye movement generation.

Currently (July 2025 to January 2026),  I am a Research Intern at Huawei London in the NLP Research Group, working on improving latent reasoning abilities of LLMs. 

Genre Matters: How Text Types Interact with Decoding Strategies and Lexical Predictors in Shaping Reading Behavior, EMNLP 2025
Lena S. Bolliger and Lena A. Jäger
[http  |code |bib]

Wave 2 of the Multilingual Eye-Movement Corpus (MECO): New text reading data across languages, Nature Scientific Data
Noam Siegelman, Sascha Schroeder, Yaqian Borogjoon Bao, Cengiz Acartürk, Niket Agrawal, Lena S. Bolliger, Jan Brasser, César Campos-Rojas, Denis Drieghe, Dušica Filipović Đurđević, Sofya Goldina, Romualdo Ibáñez Orellana, Lena A. Jäger, Ómar I. Jóhannesson, Anurag Khare, Nik Kharlamov, Hanne B. S. Knudsen, Árni Kristjánsson, Charlotte E. Lee, Jun Ren Lee, Marina P. T. Leite, Simona Mancini, Nataša Mihajlović, Ksenija Mišić, Miloslava Orekhova, Olga Parshina, Milica Popović Stijačić, Athanassios Protopapas, David R. Reich, Anurag Rimzhim, Rui Rothe-Neves, Thais M. M. Sá, Andrea Santana-Covarrubias, Irina Sekerina, Heida M. Sigurdardottir, Anna Smirnova, Priyanka Srivastava, Elisangela N. Teixeira, Ivana Ugrinic, Kerem Alp Usal, Karolina Vakulya, Ark Verma, João M. M. Vieira, Denise H. Wu, Jin Xue, Sunčica Zdravković, Junjing Zhuo, Laoura Ziaka, Victor Kuperman 
[http |pdf |code |bib]

ScanDL 2.0: A generative model of eye movements in reading synthesizing scanpaths and fixation durations,  ACM HCI / ETRA 2025
Lena S. Bolliger, David R. Reich, Lena A. Jäger
[ http |pdf |code + models |bib]

New data on text reading in English as a second language: The Wave 2 expansion of the Multilingual Eye-Movement Corpus (MECO),  Studies in Second Language Acquisition
Victor Kuperman, Sascha Schroeder, Cengiz Acartürk, Niket Agrawal, Dominick M. Alexandre, Lena S. Bolliger, Jan Brasser, César Campos-Rojas, Denis Drieghe, Dušica Filipović Đurđević, Luiz Vinicius Gadelha de Freitas, Sofya Goldina, Romualdo Ibáñez Orellana, Lena A. Jäger, Ómar I. Jóhannesson, Anurag Khare, Nik Kharlamov, Hanne B. S. Knudsen, Árni Kristjánsson, Charlotte E. Lee, Jun Ren Lee, Marina P. T. Leite, Simona Mancini, Nataša Mihajlović, Ksenija Mišić, Miloslava Orekhova, Olga Parshina, Milica Popović Stijačić, Athanassios Protopapas, David R. Reich, Anurag Rimzhim, Rui Rothe-Neves, Thais M. M. Sá, Andrea Santana Covarrubias, Irina Sekerina, Heida M. Sigurdardottir, Anna Smirnova, Priyanka Srivastava, Elisangela N. Teixeira, Ivana Ugrinic, Kerem Alp Usal, Karolina Vakulya, João M. M. Vieira, Ark Verma, Denise H. Wu, Jin Xue, Sunčica Zdravković, Junjing Zhuo, Laoura Ziaka and Noam Siegelman
[http |pdf |data |bib]

Proxy-Based Pre-Training for Eye-Tracking Applications,  ETRA 2025
David R. Reich, Cui Ding, Lena S. Bolliger, Patrick Haller, Paul Prasse, Lena A. Jäger
[http |pdf  |bib]

On the alignment of LM language generation and human language comprehension,  EMNLP/BlackboxNLP 2024
Lena S. Bolliger, Patrick Haller, Lena A. Jäger
[ http |bib]

EMTeC: A Corpus of Eye Movements on Machine-Generated Texts,  Behavior Research Methods
Lena S. Bolliger, Patrick Haller, Isabelle C. R. Cretton, David R. Reich, Tannon Kew,  Lena A. Jäger
[http |data |bib]

On language models’ cognitive biases in reading time prediction, ICML workshop on Large Language Models and Cognition 2024
Patrick Haller, Lena S. Bolliger, and Lena A. Jäger
[pdf]

Language models emulate certain cognitive profiles: An investigation of how predictability measures interact with individual differences, ACL 2024
Patrick Haller, Lena S. Bolliger, and Lena A. Jäger
[http |pdf | bib]

An eye opener regarding task-based text gradient saliency, ACL/CMCL 2024
Guojun Wu, Lena S. Bolliger, David R. Reich, and Lena A. Jäger
[ http |bib]

ScanDL: A Diffusion Model for Generating Synthetic Scanpaths on Texts,  EMNLP 2023
Lena S. Bolliger, David R. Reich, Patrick Haller, Deborah N. Jakobi, Paul Prasse, Lena A. Jäger
[ http|Video|Poster|bib]

Introducing ScanDL: A diffusion-based generative model of eye movements in reading,  MathPsych/ICCM 2024 (Society for Mathematical Psychology and International Conference on Cognitive Modeling)
Lena S. Bolliger, David R. Reich, Patrick Haller, Deborah N. Jakobi, Paul Prasse, Lena A. Jäger