{"pk":50084,"title":"Effects of AI Explanation Length on User Trust and Acceptance","subtitle":null,"abstract":"This study investigated how the length of AI-generated text explanations in Japanese influences trust and acceptance in a route selection task, a subjective decision-making task. Experiment 1 demonstrated that AI explanations increased trust and acceptance compared with no explanation; however, there was no significant difference between the effects of 100- and 300-character explanations. Experiment 2 further explored the threshold of explanation length by including 50- and 1,000-character explanations. The results showed that 300- and 1,000-character explanations increased acceptance compared to 50-character explanations; however, no differences emerged among the 100-, 300-, and 1,000-character explanations. Additionally, trust ratings were unaffected by explanation length. These results suggest that AI explanations have a threshold; in this study, AI explanations exceeding 100 characters in Japanese (approximately 50 words in English) did not lead to further changes in users' decisions to accept or reject AI recommendations.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"Human-computer interaction; Computer-based experiment; Quantitative Behavior"}],"section":"Abstracts with Poster Presentation (accepted as Abstracts)","is_remote":true,"remote_url":"https://escholarship.org/uc/item/8jt332w6","frozenauthors":[{"first_name":"Akihiro","middle_name":"","last_name":"Maehigashi","name_suffix":"","institution":"Shizuoka University","department":""},{"first_name":"Seiji","middle_name":"","last_name":"Yamada","name_suffix":"","institution":"National Institute of Informatics","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2025-01-01T15:00:00-03:00","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/50084/galley/38046/download/"}]}