Critical review · literature cutoff July 18, 2026

Critical evidence on synthetic personality in LLMs

An academic map of 370 unique studies. All 370 records were written after reading the full source and distinguish method, results, limitations, and what each study does not establish.

Research tracks

99

Unique studies

Evaluation and psychometric validity

Instruments and benchmarks examining what is measured, how reliably, and whether inferred or declared traits are stable and valid.

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62

Unique studies

Trait induction and control

Prompting, fine-tuning, and editing activations or weights to elicit, represent, modulate, or suppress traits and behaviors.

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66

Unique studies

Personas, identity, and agents

Design and evaluation of characters, profiles, and persistent agents, including role-play, personalization, memory, identity, and consistency.

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43

Unique studies

Society, culture, and collective behavior

Use of LLMs to study or approximate human group opinions, values, and decisions, as well as multi-agent interaction, networks, and collective phenomena.

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86

Unique studies

Applications, bias, and safety

Applications in health, education, recommendation, finance, and design, together with risks involving bias, discrimination, privacy, manipulation, and harm.

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14

Unique studies

Reviews, theory, and governance

Field reviews, conceptual frameworks, methodological requirements, and proposals for responsible research and governance.

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Latest review added

HumanLLM: Benchmarking and Improving LLM Anthropomorphism via Human Cognitive Patterns

2026Evaluation and psychometric validityApproved review

HumanLLM builds a synthetic corpus and two fine-tuned models for expressing combinations of psychological patterns in role-play conversations. Its taxonomy combines 100 unipolar Goldberg Big Five markers with 144 social-cognitive patterns retained from 232 candidates. For each pattern, Gemini Deep Search retrieves roughly 50 papers, references are manually filtered, and full text is sought, an abstract is retained wh…

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