Personality Modeling in Language Models

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12 papers in the last four weeks, up 71% on the four weeks before. 0.1% of all new papers.

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Traits Run Deeper: Trait-Specific Asymmetric Fusion for Personality Assessment
Jun 9, 2026Jia Li, Qian Chen, Wei Wang +5Personality Modeling in Language Models Multimodal Fusion
Hefei University of Technology Hefei, China · Intelligent Interconnected Systems Laboratory of Anhui Province Hefei University of Technology Hefei, China · Jianghuai Advanced Technology Center Anhui Provincial Industry Innovation Center of Humanoid Robots Anhui Provincial Key Laboratory of Humanoid Robots Hefei, China
Soul Computing: A Theoretical Framework and Technical Architecture for Intelligent Agents with Independent Consciousness
Jun 9, 2026Jinshan Zhang, Xishi Zhou, Qiu Peng +1Computational Cognitive Modeling Personality Modeling in Language Models
Innovation and Management Center School of Software Technology Zhejiang University (Ningbo), Ningbo, China
Emergent alignment and the projectability of ethical personas
Jun 8, 2026Guillermo Del Pinal, Youngchan Lee, Calum McNamara +1Moral Reasoning in Language Models Language Model Safety Evaluation
University of Massachusetts Amherst · Indiana University Bloomington
RedditPersona: A Modular Framework for Community-Conditioned LLM Adaptation from Reddit
Jun 4, 2026Amirhossein Ghaffari, Ali Goodarzi, Huong Nguyen +3LLM Evaluation LLM Fine-Tuning
Future Computing Group University of Oulu Oulu, Finland · Centre for Applied Computing University of Oulu Oulu, Finland
ArcANE: Do Role-Playing Language Agents Stay in Character at the Right Time?
Jun 4, 2026Woojung Song, Nalim Kim, Sangjun Song +3Large Language Model-Based Role-Play Simulation Personality Modeling in Language Models
Graduate School of Data Science, Seoul National University
The Unsampled Truth: Quantifying Prompt Artifacts in LM Psychometrics
Jun 2, 2026Nils Schwager, Christoph Hau, Simon Münker +1Prompt Sensitivity LLM Prompting
Trier University, Trier, Germany
The Assistant as a Privileged Persona: A canonical reference in cross-persona self-recognition
May 30, 2026Asvin GPersonality Modeling in Language Models Authorship Attribution
Institute for Advanced Study, Princeton
A Persona-Based Evaluation Framework for Pluralistic Alignment in Generative AI
May 29, 2026Atahan KaragozLLM Alignment Persona Consistency
Department of Computer Science University of Basel Basel, Switzerland
HEART-Bench: Do LLM Agents Exhibit Human-like Psychology?
May 28, 2026Weihan Peng, Chenxu Zhang, Qianao Wang +7Personality Modeling in Language Models Human Behavior Simulation
Shanghai Jiao Tong University · Imperial College London · Quwan Group +2
ActTraitBench: Quantifying the Knowledge-Decision Gap in Large Language Models via Human-Grounded Behavioral Validation
May 28, 2026Yutong Yang, Chenxi Miao, Weikang Li +1LLM Evaluation Personality Modeling in Language Models
Peking University · Baidu Inc
Personality, Role, and Expressive Style in Large Language Models: An Interactionist Analysis
May 27, 2026Moe Nagao, Koichiro Terao, Mikio Nakano +1Large Language Model-Based Role-Play Simulation LLM Prompting
Okayama Prefectural University · AI & Humans Lab · C4A Research Institute
ChildEval: When large language models meet children's personalities
May 27, 2026Yanyan Luo, Xue Han, Chunxu Zhao +5LLM Evaluation LLM Personalization
JIUTIAN Research, China Mobile, Beijing, China
From Facts to Insights: A Persona-Driven Dual Memory Framework and Dataset for Role-Playing Agents
May 25, 2026Rongsheng Zhang, Ruofan Hu, Weijie Chen +7Large Language Model-Based Role-Play Simulation Personality Modeling in Language Models
Zhejiang University · Fuxi AI Lab, Netease Inc.
CRPO: Character-centric Group Relative Policy Optimization for Role-aware Reasoning in Role-playing Agents
May 25, 2026Yihong Tang, Kehai Chen, Liang Yue +2RL for Language Models Persona Consistency
Institute of Computing and Intelligence, Harbin Institute of Technology, Shenzhen, China · Shenzhen Loop Area Institute (SLAI), Shenzhen, China · The Chinese University of Hong Kong, Shenzhen, China
ContextEcho: A Benchmark for Persona Drift in Long Agentic-Coding Sessions
May 22, 2026Xianzhong Ding, Yangyang Yu, Changwei Liu +1Tool-Augmented Language Model Agents AI Coding Agents
Center for Advanced AI, Accenture
Modeling Pathology-Like Behavioral Patterns in Language Models Through Behavioral Fine-Tuning
May 21, 2026Nicola Milano, Davide MaroccoLLM Fine-Tuning Personality Modeling in Language Models
University of Naples Federico II, Natural and Artificial Cognition Laboratory ”Orazio Miglino”, Department of Humanities
Perception or Prejudice: Can MLLMs Go Beyond First Impressions of Personality?
May 21, 2026Caixin Kang, Tianyu Yan, Sitong Gong +8LLM Grounding Personality Modeling in Language Models
1The University of Tokyo · 2Shanda AI Research Tokyo · 3Dalian University of Technology
HyperPersona: A Multi-Level Hypergraph Framework for Text-Based Automatic Personality Prediction
May 17, 2026Sina Heydari, Majid RamezaniPersonality Modeling in Language Models Hierarchical Representation Learning
Department of Computer Science and Information Technology Institude for Advanced Studies in Basic Sciences (IASBS) Zanjan, Iran, 45137-66731
PersonaArena: Dynamic Simulation for Evaluating and Enhancing Persona-Level Role-Playing in Large Language Models
May 16, 2026Wenlong Shi, Jianxun Lian, Mingqi Wu +5Large Language Model-Based Role-Play Simulation Personality Modeling in Language Models
College of Computer Science and Software Engineering, Shenzhen University, China · Microsoft Research Asia · Microsoft Gaming +2
Evaluation Drift in LLM Personality Induction: Are We Moving the Goalpost?
May 16, 2026Prateek Rajput, Yewei Song, Iyiola E. Olatunji +2Personality Modeling in Language Models LLM Post-Training
University of Luxembourg, Esch-sur-Alzette, Luxembourg
ScioMind: Cognitively Grounded Multi-Agent Social Simulation with Anchoring-Based Belief Dynamics and Dynamic Profiles
May 13, 2026Yitian Yang, Yiqun Duan, Linghan Huang +4Multi-Agent LLM Systems Opinion Dynamics
The University of Sydney · Meta
Patients With Personality: Realistic Patient Simulation through Controlled Diversity and Selective Disclosure
May 13, 2026Moritz Schlager, Friederike Jungmann, Samuel Schmidgall +12Personality Modeling in Language Models Persona-Conditioned Generation
Technical University of Munich (TUM) · Munich Center for Machine Learning (MCML) · TUM University Hospital +3
Probing Persona-Dependent Preferences in Language Models
May 13, 2026Oscar Gilg, Pierre Beckmann, Daniel Paleka +1LLM Alignment LLM Interpretability
MATS · MATS, EPFL · ETH Zürich +1
Tracing Persona Vectors Through LLM Pretraining
May 13, 2026Viktor Moskvoretskii, Dominik Glandorf, Jorge Medina Moreira +2Language Model Pretraining LLM Interpretability
EPFL
Persona-Model Collapse in Emergent Misalignment
May 13, 2026Davi Bastos Costa, Renato VicenteLLM Alignment LLM Fine-Tuning
TELUS Digital Research Hub · Center for Artificial Intelligence and Machine Learning · Institute of Mathematics, Statistics and Computer Science +1
Simulating Eating Disorder Patients with LLMs: Evaluating Psychological Persona Stability in Multi-Turn Conversations
May 12, 2026Jennifer Haase, Jana Gonnermann-Müller, See Heng Yim +3Persona Consistency Personality Modeling in Language Models
Weizenbaum Institute, Berlin, Germany · HU Berlin, Berlin, Germany · Zuse Institute Berlin, Berlin, Germany +1
How Well Do Large Language Models Capture Human Personality?
May 12, 2026Aanisha Bhattacharyya, Yaman Kumar Singla, Rajiv Ratn Shah +2LLM Evaluation Representation Collapse
Adobe Media and Data Science Research (MDSR) · IIIT-Delhi · SUNY at Buffalo
Compositional Literary Primitives in Instruction-Tuned LLMs: Cross-Architectural SAE Features for Self, Style, and Affect
May 11, 2026Joao Paulo Cavalcante Presa, Savio Salvarino Teles de OliveiraLLM Interpretability Personality Modeling in Language Models
Federal University of Goias (UFG)
Intrinsic Guardrails: How Semantic Geometry of Personality Interacts with Emergent Misalignment in LLMs
May 11, 2026Krishak Aneja, Manas Mittal, Anmol Goel +2LLM Alignment LLM Interpretability
International Institute of Information Technology, Hyderabad · TU Darmstadt · Mohamed bin Zayed University of Artificial Intelligence, Abu Dhabi
Exploitation Without Deception: Dark Triad Feature Steering Reveals Separable Antisocial Circuits in Language Models
May 10, 2026Cameron Berg, Roshni LullaLLM Interpretability Personality Modeling in Language Models
1Reciprocal Research · 2Brain & Creativity Institute, University of Southern California
Do LLMs Experience an Internal Polylogue? Investigating Reasoning through the Lens of Personas
May 9, 2026Nils A. Herrmann, Leander Girrbach, Kirill Bykov +1Language Model Steering LLM Interpretability
1Technical University of Munich · 2Helmholtz Munich · 3Munich
SalesSim: Benchmarking and Aligning Multimodal Language Models as Retail User Simulators
May 8, 2026Yada Pruksachatkun, Elaine Wan, Lyanna Chen +2RL for Language Models Large Language Model-Based Role-Play Simulation
Salesforce Research · University of California Los Angeles
How Value Induction Reshapes LLM Behaviour
May 8, 2026Arnav Arora, Natalie Schluter, Katherine Metcalf +1LLM Sycophancy LLM Alignment
University of Copenhagen · 2Apple
The Pinocchio Dimension: Phenomenality of Experience as the Primary Axis of LLM Psychometric Differences
May 6, 2026Hubert Plisiecki, Sabina Siudaj, Kacper Dudzic +4LLM Evaluation Personality Modeling in Language Models
IDEAS Research Institute · University of Warsaw
Persona Without Substrate: Regime-Dependence and the LLM Individuation Problem
May 1, 2026Shuaizhi ChengLLM Interpretability Personality Modeling in Language Models
Harbin Institute of Technology
Characterizing the Consistency of the Emergent Misalignment Persona
Apr 30, 2026Anietta Weckauff, Yuchen Zhang, Maksym AndriushchenkoLanguage Model Safety Evaluation Persona Consistency
ELLIS Institute Tübingen, Max Planck Institute for Intelligent Systems, Tübingen AI Center
Stable Behavior, Limited Variation: Persona Validity in LLM Agents for Urban Sentiment Perception
Apr 30, 2026Neemias B da Silva, Rodrigo Minetto, Daniel Silver +1VLM Evaluation Personality Modeling in Language Models
Universidade Tecnol´ogica Federal do Paran´a (UTFPR), Curitiba, Brazil · University of Toronto, Toronto, Canada
DPN-LE: Dual Personality Neuron Localization and Editing for Large Language Models
Apr 30, 2026Lifan Zheng, Xue Yang, Jiawei Chen +6LLM Interpretability Personality Modeling in Language Models
Southeast University · Shanghai Jiao Tong University · East China Normal University +6
Hierarchical Multi-Persona Induction from User Behavioral Logs: Learning Evidence-Grounded and Truthful Personas
Apr 28, 2026Nayoung Choi, Haeyu Jeong, Changbong Kim +2Personality Modeling in Language Models User Modeling
Department of Computer Science, Emory University, Atlanta, GA, USA · Naver Corporation, South Korea
The Chameleon's Limit: Investigating Persona Collapse and Homogenization in Large Language Models
Apr 27, 2026Yunze Xiao, Vivienne J. Zhang, Chenghao Yang +3LLM Evaluation Personality Modeling in Language Models
CMU · UChicago · MIT +3
The Pragmatic Persona: Discovering LLM Persona through Bridging Inference
Apr 27, 2026Jisoo Yang, Jongwon Ryu, Minuk Ma +2Personality Modeling in Language Models Language Model Probing
Department of Artificial Intelligence, Chung-Ang University, Seoul, 06974, Republic of Korea · Department of Computer Science, University of British Columbia,2026 Vancouver, BC V6T 1Z4, Canada · Van Lang University, Ho Chi Minh City, Vietnam
Machine individuality: Separating genuine idiosyncrasy from response bias in large language models
Apr 18, 2026Valentin Kriegmair, Dirk U. WulffLLM Evaluation Personality Modeling in Language Models
Center for Adaptive Rationality, Max Planck Institute for Human Development, 14195 Berlin, Germany · Center for Cognitive and Decision Sciences, Department of Psychology, University of Basel, 4055 Basel, Switzerland
Rethinking Role-Playing Evaluation: Anonymous Benchmarking and a Systematic Study of Personality Effects
Mar 4, 2026Ji-Lun Peng, Yun-Nung ChenPersonality Modeling in Language Models OOD Generalization
National Taiwan University, Taipei, Taiwan · Academia Sinica, Taipei, Taiwan
InterviewSim: A Scalable Framework for Interview-Grounded Personality Simulation
Feb 23, 2026Yu Li, Pranav Narayanan Venkit, Yada Pruksachatkun +1Personality Modeling in Language Models Human Behavior Simulation
Salesforce Research
Identifying and Mitigating Bottlenecks in Role-Playing Agents: A Systematic Study of Disentangling Character Profile Axes
Jan 8, 2026Yonghyun Jun, Junhyuk Choi, Jeonghyun Park +3LLM Alignment Personality Modeling in Language Models
Chung-Ang University, Seoul, Korea
Psychometric Comparability of LLM-Based Digital Twins
Dec 22, 2025Yufei Zhang, Zhihao MaLLM Evaluation Personality Modeling in Language Models
Computational Communication Collaboratory, School of Journalism and Communication, Nanjing University, Nanjing 210023, China
Psychological Steering in LLMs: An Evaluation of Effectiveness and Trustworthiness
Oct 6, 2025Amin Banayeeanzade, Ala N. Tak, Fatemeh Bahrani +5Language Model Steering Personality Modeling in Language Models
Department of Computer Science, University of Southern California · Institute for Creative Technologies, University of Southern California · Department of Statistics and Data Science, University of California, Los Angeles
Human Psychometric Questionnaires Mischaracterize LLM Behavior
Sep 12, 2025Woojung Song, Dongmin Choi, Yoonah Park +3Personality Modeling in Language Models Psychometric Validation
1Graduate School of Data Science, Seoul National University · Department of Communication, Interdisciplinary Program in Artificial Intelligence, Seoul National University
LLM Agents Grounded in Self-Reports Enable General-Purpose Simulation of Individuals
Nov 15, 2024Joon Sung Park, Carolyn Q. Zou, Jonne Kamphorst +8Personality Modeling in Language Models Human Behavior Simulation
1Computer Science Department, Stanford University; Stanford, CA, 94305, USA. · Department of Communication Studies, Northwestern University; Evanston, IL 60208, USA. · 7CDSP and CEE, Sciences Po; Paris, 75007, France. +4
Where is the Mind? Persona Vectors and LLM Individuation
Date pendingPierre Beckmann, Patrick ButlinLLM Interpretability Personality Modeling in Language Models
MATS · EPFL & Idiap Research Institute · Eleos AI Research

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Traits Run Deeper: Trait-Specific Asymmetric Fusion for Personality Assessment

Jia Li, Qian Chen, Wei Wang, Xinyu Li+4

Hefei University of Technology Hefei, China · Intelligent Interconnected Systems Laboratory of Anhui Province Hefei University of Technology Hefei, China · Jianghuai Advanced Technology Center Anhui Provincial Industry Innovation Center of Humanoid Robots Anhui Provincial Key Laboratory of Humanoid Robots Hefei, China

Personality Modeling in Language Models Multimodal Fusion

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Personality assessment aims to infer stable personality traits from dynamic behaviors across language, voice, and facial cues. Since different personality dimensions are revealed through distinct behavioral perspectives, modeling trait-specific evidence is challenging. However, most existing approaches adopt a uniform multimodal fusion strategy across all dimensions, assuming identical modality contributions. This overlooks trait-specific modality preferences and introduces cross-modal interference. To address this issue, we propose a novel personality assessment framework called Traits Run Deeper, which consists of three components. Specifically, the Multimodal Foundation Representation (MFR) module constructs personality-oriented multimodal inputs and leverages psychology-informed semantic templates as anchors, enabling foundation models to capture trait-relevant information. Building upon MFR, the Trait-Specific Modality Fusion (TSMF) module acts as an asymmetric fusion mechanism, allowing each dimension to selectively exploit different modality pathways from modality-specific modeling to complementary fusion. Thus, TSMF captures heterogeneous modality preferences while reducing cross-modal contamination. Furthermore, the Distribution-Calibrated Personality Regression (DCPR) module mitigates label imbalance and central tendency bias through target distribution calibration, improving robustness and stability. Experimental results on the AVI Challenge 2026 validation set demonstrate the effectiveness of the proposed framework, reducing mean squared error (MSE) by approximately 25% compared with the baseline. Consistent improvements are observed on the official test set, where our method achieves the best performance and ranks first in the Personality Assessment Track. The source code will be made available at https://github.com/MSA-LMC/AVI2026.

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