- 32 名の参加者が模擬病院環境でタスクを実行する user study を実施。
- 異なるロボット介入戦略が user experience, interaction dynamics, perceived intrusiveness, sense of support に与える影響を評価。
- 結果として、interaction frequency が高いほど engagement が向上するわけではないことを確認。
- perceived support と intrusiveness の trade-off が physical proximity や user effort に影響されることを示した。
5. 議論はある?
- 高い interaction frequency は必ずしも良い engagement に繋がらない。
- perceived support と intrusiveness の間に体系的な trade-off が存在し、physical proximity や user effort が影響する。
- 効果的な engagement には adaptive で context-sensitive な介入ポリシーが不可欠であるという議論を提示。
- 具体的な議論の詳細や限界については要旨からは不明。
Designing effective Human-Robot Interaction in task-oriented settings requires carefully balancing user engagement with socially acceptable levels of robot intrusiveness. In this paper, we examine how different robot intervention strategies shape user experience, interaction dynamics, perceived intrusiveness, and sense of support. We compare two approaches: a continuous engagement-seeking robot strategy, and a context-aware strategy that selectively intervenes based on the user's state and task context. Both approaches rely on multimodal behavioral cues, including body orientation and attentional signals, to guide robot actions. We evaluate these strategies in a user study with 32 participants performing a task in a simulated hospital environment. Our findings show that higher interaction frequency does not necessarily lead to better engagement. Instead, we observe a systematic trade-off between perceived support and intrusiveness, influenced by factors such as physical proximity and user effort. These results provide empirical evidence that effective engagement in HRI depends on adaptive, context-sensitive intervention policies.