Entrainment is the tendency of interlocutors to become more similar to each other in their way of speaking. This phenomenon has been repeatedly documented and is associated with multiple social aspects of human-human conversations. However, there is a dearth of research on the effects of spoken dialogue systems (SDSs) with implemented acoustic-prosodic (dis)entrainment policies. The goal of the present work is to provide further empirical evidence on how acoustic-prosodic (dis)entraining policies affect users. In particular, this article focuses on its effects on users’ trust toward the SDSs. In the experiments reported here we analyze if and how different acoustic-prosodic (dis)entrainment policies affect users’ perception of a system’s ability. We collected data from 98 unique participants, all native speakers of Argentine Spanish. Our results suggest that acoustic-prosodic (dis)entrainment in spoken dialogue systems is effectively associated with the way users perceive the capabilities of such systems. Characterizing these effects remains a challenging task. Overall, we observe a positive effect on trust of entrainment on intensity and a negative effect of entrainment on pitch. Estimated effect sizes are far from negligible.

夹带是对话者在说话方式上变得越来越相似的趋势。这种现象已被反复记录，并与人与人对话的多个社会方面相关联。然而，缺乏对带有实施的声音-韵律（禁忌）策略的口语对话系统（SDS）的影响的研究。本工作的目的是提供进一步的经验证据，说明声学（取消）夹带政策如何影响用户。特别是，本文重点关注其对用户对SDS信任的影响。在此处报告的实验中，我们分析了不同的声学（消音）夹带策略是否以及如何影响用户对系统功能的感知。我们收集了98位独特的参与者的数据，这些参与者都是阿根廷西班牙语的母语。我们的结果表明，口语对话系统中的声音（声音）夹带与用户感知此类系统功能的方式有效相关。表征这些影响仍然是一项艰巨的任务。总体而言，我们观察到训练对强度的信任具有积极作用，而对音高则具有负面影响。估计的效果大小不可忽略。