Bartlett, M. E., Edmunds, C. E. R., Belpaeme, T., Thill, S., & Lemaignan, S. (2019). What can you see? Identifying cues on internal states from the movements of natural social interactions. Frontiers in Robotics and AI, 6, Article 49. https://doi.org/10.3389/frobt.2019.00049