arXiv Computation and Language By Liancheng Gong, Zhiyang Wang, Yiwei Xu, Julia Mendelsohn

Persuasion Index: A Theory-Guided Framework for Persuasion Analysis

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The paper introduces the Persuasion Index (PI), a taxonomy of 15 persuasion dimensions grounded in psychological and communication theories, implemented with 55 lexicon- and rule-based sub-features. PI is modular, allowing individual detectors to be swapped while preserving its theoretical framework. Evaluations on four English argumentative datasets show that PI provides a shared, lightweight feature space that captures meaningful predictive signals and reveals consistent dimension-level associations with persuasion outcomes, with variations across topics and stances.

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