Generalization of rapport-estimation patterns across contexts

Determine whether the rapport-estimation patterns observed in a Japanese drugstore generalize to other countries, languages, cultures, settings, and robot embodiments.

Background

The study evaluates third-party-rated rapport estimation using multimodal recordings collected in a single Japanese drugstore and involving a WoZ-operated Sota social robot. Because the dataset is geographically, linguistically, culturally, environmentally, and embodiment-specific, the authors explicitly identify whether the observed patterns transfer to other deployment contexts as unresolved. Establishing such generalization is important for determining whether the reported findings apply beyond WoZ-mediated HRI in the particular retail setting studied.

References

It therefore remains unclear whether similar patterns would appear in other countries, languages, cultures, settings, or robot embodiments.

Multimodal Rapport Estimation in Real-World HRI  (2608.18401 - Sakuramoto et al., 19 Aug 2026) in Section 5.4, “Limitations and Future Work”