Publications

August H. Nilsson, Veerle C. Eijsbroek, Zhuojun Gu, Katarina Kjell, Salvatore Giorgi, Roman Kotov,, Adithya V. Ganesan, H. Andrew Schwartz, Oscar N.E. Kjell (2026). The Language-Based Assessment Model (L-BAM) Library: Open Model Sharing for Independent Validation and Broader Applications. Advances in Methods and Practices in Psychological Science.

Veerle C. Eijsbroek, Katarina Kjell, H. Andrew Schwartz, Jan R. Boehnke, Eiko I. Fried, Daniel N. Klein, Peik Gustafsson, Isabelle Augenstein, Patrick M.M. Bossuyt, Oscar N.E. Kjell (2025). The LEADING guideline: Reporting standards for expert panel, best-estimate diagnosis, and longitudinal expert all data (LEAD) methods. Comprehensive Psychiatry.

Zhuojun Gu, Katarina Kjell, H. Andrew Schwartz, Oscar N.E. Kjell (2025). Natural Language Response Formats for Assessing Depression and Worry with Large Language Models: A Sequential Evaluation with Model Pre-registration. Comprehensive Psychiatry.

Rajath Rao, Adithya V Ganesan, Oscar Kjell, Jonah Luby, Akshay Raghavan, Scott Feltman, Whitney Ringwald, Ryan L. Boyd, Benjamin Luft, Camilo Ruggero, Neville Ryant, Roman Kotov,, H. Andrew Schwartz (2025). WhiSPA: Semantically and Psychologically Aligned Whisper with Self-Supervised Contrastive and Student-Teacher Learning. Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics.

Tim Lomas, August Håkan Nilsson, Oscar N.E. Kjell, Ryan Niemiec, James O. Pawelski, R. Noah Padgetta, Tyler J. VanderWeele (2025). Differentiating balance and harmony through natural language analysis: a cross-national exploration of two understudied wellbeing-related concepts. Journal of Positive Psychology.

August Håkan Nilsson, Johannes C. Eichstaedt, Tim Lomas, Andrew Schwartz, Oscar Kjell (2024). The Cantril Ladder elicits thoughts about power and wealth. Scientific Reports.

August Håkan Nilsson, J. Malte Runge, Adithya V. Ganesan, Carl Viggo N. G. Lövenstierne, Nikita Soni, Oscar Kjell (2024). Implicit Motives Codings are at Least as Accurate as Humans’ and 99% Faster. Journal of Personality and Social Psychology.

Oscar N.E. Kjell, Katarina Kjell, H. Andrew Schwartz (2024). Beyond Rating Scales: With targeted evaluation, large language models are poised for psychological assessment. Psychiatry Research.

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Vasudha Varadarajan, Sverker Sikström, Oscar N.E. Kjell, H. Andrew Schwartz (2024). Adaptive Language-based Mental Health Assessment with Item-Response Theory. Computational Mental Health Journal.

Oscar Kjell, Salvatore Giorgi, H. Andrew Schwartz (2023). The Text-Package: An R-Package for Analyzing and Visualizing Human Language Using Natural Language Processing and Transformers. Psychological Methods.

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Sverker Sikström, Alfred Pålsson Höök, Oscar Kjell (2023). Precise language responses versus easy rating scales—Comparing respondents’ views with clinicians’ belief of the respondent’s views. PLOS ONE.

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Oscar Kjell, Salvatore Giorgi, H. Andrew Schwartz, Johannes C. Eichstaedt (2023). Towards Well-Being Measurement with Social Media Across Space, Time, and Cultures: Three Generations of Progress. WHR 2023.

August Håkan Nilsson, Erik Hellryd, Oscar Kjell (2022). Doing well-being: Self-reported activities are related to subjective well-being. PLOS ONE.

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Oscar N. E. Kjell, Sverker Sikström, Katarina Kjell, H. Andrew Schwartz (2022). Natural language analyzed with AI‐based transformers predict traditional subjective well‐being measures approaching the theoretical upper limits in accuracy. Sci. Rep..

Paul T. P. Wong, Gökmen Arslan, Victoria L. Bowers, Edward J. Peacock, Oscar Nils Erik Kjell, Itai Ivtzan, Tim Lomas (2021). Self-Transcendence as a Buffer Against COVID-19 Suffering: The Development and Validation of the Self-Transcendence Measure-B. Frontiers in Psychology, 12(648549).

Sverker Sikström, Mats Dahl, Hannah Lettmann, Anna Alexandersson, Elena Schwörer, Lotta Stille, Oscar Kjell, Åse Innes-Ker, Leonard Ngaosuvan (2021). What you say and what I hear: Investigating differences in the perception of the severity of psychological and physical violence in intimate partner relationships. PLoS ONE.

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Katarina Kjell, Per Johnsson, Sverker Sikström (2021). Freely Generated Word Responses Analyzed With Artificial Intelligence Predict Self-Reported Symptoms of Depression, Anxiety, and Worry. Front. Psychol..

Kjell, Oscar, Daiva Daukantaitė, Sverker Sikström (2021). Computational Language Assessments of Harmony in Life — Not Satisfaction With Life or Rating Scales — Correlate With Cooperative Behaviors. Journal of Example Studies.

David Marcusson-Clavertz, Oscar N. E. Kjell, Jinhyuk Kim, Stefan D. Persson, Etzel Cardeña (2020). Sad Mood and Poor Sleep Are Related to Task-Unrelated Thoughts and Experience of Diminished Cognitive Control. Sci Rep.

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Oscar N. E. Kjell, Ed Diener (2020). Abbreviated Three-Item Versions of the Satisfaction with Life Scale and the Harmony in Life Scale Yield as Strong Psychometric Properties as the Original Scales. Journal of Personality Assessment.

David Marcusson-Clavertz, Melina West, Oscar N. E. Kjell, Eli Somer (2019). A daily diary study on maladaptive daydreaming, mind wandering, and sleep disturbances: Examining within-person and between-persons relations. PLOS ONE.

Katarina Kjell, Karolina Löwgren, Anders Rasmussen (2018). A Longer Interstimulus Interval Yields Better Learning in Adults and Young Adolescents. Frontiers in Behavioral Neuroscience, 12(299).

Oscar Kjell (2018). Conceptualizing and Measuring Well-Being Using Statistical Semantics and Numerical Rating Scales. Lund University.

Oscar N. E. Kjell, Katarina Kjell, Danilo Garcia, Sverker Sikström (2018). Semantic Measures: Using Natural Language Processing to Measure, Differentiate, and Describe Psychological Constructs. Psychological Methods.

David Marcusson-Clavertz, Oscar N. E. Kjell (2018). Psychometric Properties of the Spontaneous and Deliberate Mind Wandering Scales. EJPA.

Itai Ivtzan, Tarli Young, Hoi Ching Lee, Tim Lomas, Daiva Daukantaitė, Oscar N. E. Kjell (2017). Mindfulness Based Flourishing Program: A Cross-Cultural Study of Hong Kong Chinese and British Participants. Journal of Happiness Studies, 18(6).

Danilo Garcia, Oscar NE Kjell, Sverker Sikström, Trevor Archer (2016). Using Language and Affective Profiles to Investigate Differences between Individuals. Clinical and Experimental Psychology, 2(2).

O. N. E. Kjell, D. Daukantaite, K. Hefferon, S. Sikström (2016). The Harmony in Life Scale Complements the Satisfaction with Life Scale. “Social Indicators Research, 126(3)”.

Danilo Garcia, Henrik Anckarsäter, Oscar N. E. Kjell, Trevor Archer, Patricia Rosenberg, C. Robert Cloninger, Sverker Sikström (2015). Agentic, communal, and spiritual traits are related to the semantic representation of written narratives of positive and negative life events. Psych Well-Being.

Danilo Garcia, Ali Al Nima, Oscar N.E. Kjell (2014). The affective profiles, psychological well-being, and harmony: Environmental mastery and self-acceptance predict the sense of a harmonious life. PeerJ.

Oscar N.E. Kjell, Sam Thompson (2013). Exploring the Impact of Positive and Negative Emotions on Cooperative Behaviour in a Prisoner’s Dilemma Game. PeerJ.

Oscar N.E. Kjell, Ali A. Nima, Sverker Sikström, Trevor Archer, Danilo Garcia (2013). Iranian and Swedish adolescents: differences in personality traits and well-being. PeerJ.

Oscar N. E. Kjell (2011). Sustainable Well-Being: A Potential Synergy Between Sustainability and Well-Being Research. Review of General Psychology, 15(3), 255–266.