测试机器人语音高低对儿童压力的影响，发现无显著差异。
Calming Robot Pitches? Exploring the Influence of Robot Voice Pitch on Children's Stress Levels
- 让8-12岁儿童与机器人玩拼乐高游戏，对比高低音语音
- 游戏期间压力上升，但高低音组间无显著差异
- 适合关注人机交互中语音设计的教育科技研究者
本研究考察了机器人语音音调变化是否影响儿童在机器人引导游戏中的压力水平。尽管低音调在人类交流中已被证明有助于压力调节，但其是否适用于儿童与机器人互动尚不明确。27名8-12岁的荷兰儿童随机分配至使用低音调或高音调语音的Zenbo Junior II机器人互动。互动包括介绍环节和限时乐高搭建游戏。采用改良版CAM-S量表测量压力水平，结果显示游戏期间压力上升，证实任务具有压力诱导性。但音调条件间未出现显著差异。研究结果提示，低音调缓解压力的效应可能无法直接迁移至人机交互场景。可能原因包括儿童对情感语调敏感度尚在发展、语音与外观不匹配，或固定音调变化听起来不自然（真实语音在多维度上动态变化）。未来研究可探索语音韵律特征组合（超越音调单一因素），以深化对儿童压力调节支持的机器人语音设计理解。
原文摘要 · Abstract (English)
This study examined whether variations in robot speech pitch influence children's stress levels during a robot-guided game. Although lower-pitched voices have been shown to facilitate stress regulation in human communication, it remains unclear whether this effect generalizes to synthetic voices in child-robot interactions. Twenty-seven Dutch children aged 8-12 years were randomly assigned to interact with a Zenbo Junior II robot using either a lower-pitched or a higher-pitched voice. The interaction consisted of an introduction followed by a timed LEGO-building game. Stress levels, measured with an adapted version of CAM-S, increased during the game, confirming the stress-inducing nature of the task. No differences emerged between pitch conditions. These findings suggest that the benefits of lower pitch in reducing stress may not directly translate to child-robot interactions. Possible explanations include children's developing sensitivity to emotional tone, mismatches between the robot's voice and appearance, or the use of fixed pitch changes that sound unnatural, since real speech varies dynamically across multiple dimensions. Future research examining combinations of prosodic cues (beyond pitch alone) could provide further insights and help inform robot voice design for effective stress regulation support for children.
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