Affective Personalization of a Social Robot Tutor for Children’s Second Language Skills

Authors

  • Goren Gordon Tel Aviv-University
  • Samuel Spaulding Massachusetts Institute of Technology
  • Jacqueline Kory Westlund Massachusetts Institute of Technology
  • Jin Joo Lee Massachusetts Institute of Technology
  • Luke Plummer Massachusetts Institute of Technology
  • Marayna Martinez Massachusetts Institute of Technology
  • Madhurima Das Massachusetts Institute of Technology
  • Cynthia Breazeal Massachusetts Institute of Technology

Keywords:

affective computing, children education, personal robot, robot tutor, second language learning

Abstract

Though substantial research has been dedicated towards using technology to improve education, no current methods are as effective as one-on-one tutoring. A critical, though relatively understudied, aspect of effective tutoring is modulating the student's affective state throughout the tutoring session in order to maximize long-term learning gains. We developed an integrated experimental paradigm in which children play a second-language learning game on a tablet, in collaboration with a fully autonomous social robotic learning companion. As part of the system, we measured children's valence and engagement via an automatic facial expression analysis system. These signals were combined into a reward signal that fed into the robot's affective reinforcement learning algorithm. Over several sessions, the robot played the game and personalized its motivational strategies (using verbal and non-verbal actions) to each student. We evaluated this system with 34 children in preschool classrooms for a duration of two months. We saw that (1) children learned new words from the repeated tutoring sessions, (2) the affective policy personalized to students over the duration of the study, and (3) students who interacted with a robot that personalized its affective feedback strategy showed a significant increase in valence, as compared to students who interacted with a non-personalizing robot. This integrated system of tablet-based educational content, affective sensing, affective policy learning, and an autonomous social robot holds great promise for a more comprehensive approach to personalized tutoring.

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Published

2016-03-05

How to Cite

Gordon, G., Spaulding, S., Kory Westlund, J., Lee, J. J., Plummer, L., Martinez, M., Das, M., & Breazeal, C. (2016). Affective Personalization of a Social Robot Tutor for Children’s Second Language Skills. Proceedings of the AAAI Conference on Artificial Intelligence, 30(1). Retrieved from https://ojs.aaai.org/index.php/AAAI/article/view/9914

Issue

Section

Special Track: Integrated AI Capabilities