Cognitive Alignment in Personality Reasoning: Leveraging Prototype Theory for MBTI Inference

• URL: http://arxiv.org/abs/2511.00115v1
• Date: Fri, 31 Oct 2025 02:45:30 GMT
• Title: Cognitive Alignment in Personality Reasoning: Leveraging Prototype Theory for MBTI Inference
• Abstract summary: ProtoMBTI is a framework for MBTI inference that operationalizes prototype theory within an LLM-based pipeline.<n>Our results indicate that aligning the inference process with psychological prototype reasoning yields gains in accuracy, interpretability, and transfer for text-based personality modeling.
• Score: 33.207642254711
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Personality recognition from text is typically cast as hard-label classification, which obscures the graded, prototype-like nature of human personality judgments. We present ProtoMBTI, a cognitively aligned framework for MBTI inference that operationalizes prototype theory within an LLM-based pipeline. First, we construct a balanced, quality-controlled corpus via LLM-guided multi-dimensional augmentation (semantic, linguistic, sentiment). Next, we LoRA-fine-tune a lightweight (<=2B) encoder to learn discriminative embeddings and to standardize a bank of personality prototypes. At inference, we retrieve top-k prototypes for a query post and perform a retrieve--reuse--revise--retain cycle: the model aggregates prototype evidence via prompt-based voting, revises when inconsistencies arise, and, upon correct prediction, retains the sample to continually enrich the prototype library. Across Kaggle and Pandora benchmarks, ProtoMBTI improves over baselines on both the four MBTI dichotomies and the full 16-type task, and exhibits robust cross-dataset generalization. Our results indicate that aligning the inference process with psychological prototype reasoning yields gains in accuracy, interpretability, and transfer for text-based personality modeling.

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