Behavioural and Social Computing

This volume 17175 - 17177 constitutes the refereed proceedings of the 13th International Conference on Behavioural and Social Computing, BESC 2026 held in Bangkok, Thailand during October 26-28, 2026.The 99 full papers presented in these volumes were carefully reviewed and selected from 162 submissions.The accepted contributions covered a broad range of topics, including social computing, applied psychology, behavioural pattern learning, text and sentiment analysis, graph learning, AI in education, and AI for social good. This strong international participation highlights the continued growth and vitality of the behavioural and social computing community.