Researchers use information about the amount of time people spend on digital media for numerous purposes. While social media platforms commonly do not allow external access to measure the use time directly, a usual alternative method is to use participants' self-estimation. However, doubts were raised about the self-estimation's accuracy, posing questions regarding the cognitive factors that underline people's perceptions of the time they spend on social media. In this work, we build on prior studies and explore a novel social media platform in the context of use time: TikTok. We conduct platform-independent measurements of people's self-reported and server-logged TikTok usage (n=255) to understand how users' demographics and platform engagement influence their perceptions of the time they spend on the platform and their estimation accuracy. Our work adds to the body of work seeking to understand time estimations in different digital contexts and identifies new influential engagement factors.

翻译：研究人员利用人们在数字媒体上花费的时间信息进行多种研究。虽然社交媒体平台通常不允许外部访问以直接测量使用时间，但一种常见的替代方法是采用参与者的自我估算。然而，自我估算的准确性受到质疑，这引发了关于人们在社交媒体上时间感知背后认知因素的探讨。在本研究中，我们基于先前研究，在应用时间语境下探索了一个新颖的社交媒体平台：TikTok。我们通过独立于平台的测量方法，获取了人们自我报告的和服务器记录的TikTok使用数据（n=255），以理解用户的人口统计学特征和平台参与度如何影响其对平台使用时间的感知及其估算准确性。本研究进一步丰富了在不同数字语境中理解时间估算的研究领域，并识别出了具有影响力的新参与因素。