Vol. 22:1 (2021) ► pp.110–140
Robots as an interactive-social medium in storytelling to multiple children
This paper investigates the effects of group interaction in a storytelling situation for children using two robots: a reader robot and a listener robot as a side-participant. We developed a storytelling system that consists of a reader robot, a listener robot, a display, a gaze model, a depth sensor, and a human operator who responds and provides easily understandable answers to the children’s questions. We experimentally investigated the effects of using a listener robot and either one or two children during a storytelling situation on the children’s preferences and their speech activities. Our experimental results showed that the children preferred storytelling with the listener robot. Although two children obviously produced more speech than one child, the listener robot discouraged the children’s speech regardless of whether one or two were listening.
Article outline
- 1.Introduction
- 2.Related work
- 2.1Robot as an information-providing medium
- 2.2Interactive storytelling-robot systems for children
- 3.System overview
- 3.1Human-tracking system
- 3.2Gaze model
- 3.3Robot
- 3.4Details of implemented behavior
- 3.5Operator
- 4.Experiment
- 4.1Hypotheses and predictions about children’s speech activities and the number of robots
- 4.2Participants
- 4.3Conditions
- 4.4Environment
- 4.5Procedure
- 4.6Measurements
- 5.Results
- 5.1Observations
- 5.2Verification of prediction: Speech activities based on the number of children and robots
- 5.3Additional analysis of subjective impressions
- 5.4Children’s behaviors analysis
- 5.4.1Behavior category of children
- 5.4.2Conversation topics of children
- 5.4.3Touch behaviors between robots and children
- 6.Discussion
- 6.1Implications of experiment results
- 6.2Design implications for application perspective
- 6.3Toward (semi-) autonomous storytelling
- 6.4Limitations
- 7.Conclusion
- Conflict of interest
- Acknowledgements
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References