Think-alouds are a common HCI usability method where participants verbalize their thoughts while using interfaces. However, their utility in cross-cultural settings, particularly in the Global South, is unclear, where cultural differences impact user interactions. This paper investigates the usability challenges teachers in rural C\^ote d'Ivoire faced when using a chatbot designed to support an educational program. We conducted think-aloud sessions with 20 teachers two weeks after a chatbot deployment, analyzing their navigation, errors, and time spent on tasks. We discuss our approach and findings that helped us identify usability issues and challenging features for improving the chatbot designs. Our note summarizes our reflections on using think-aloud and contributes to discussions on its culturally sensitive adaptation in the Global South.

翻译：出声思维法是一种常用的人机交互可用性评估方法，参与者在使用界面时口头表达其思考过程。然而，该方法在跨文化环境（尤其是全球南方地区）中的适用性尚不明确，因为文化差异会影响用户交互行为。本文研究了科特迪瓦农村地区教师在使用一款为支持教育项目而设计的聊天机器人时遇到的可用性挑战。我们在聊天机器人部署两周后，对20名教师进行了出声思维实验，分析了他们的导航路径、操作错误及任务耗时。我们讨论了研究方法和发现，这些发现帮助我们识别了可用性问题及需要改进的聊天机器人功能设计难点。本文总结了我们关于使用出声思维法的反思，并为全球南方地区文化敏感性适配的讨论提供了参考。