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”