People spontaneously segment continuous ongoing actions into sequences of events. Prior research found that gaze similarity and pupil dilation increase at event boundaries and that older adults segment more idiosyncratically than do young adults. We used eye tracking to explore age-related differences in gaze similarity (i.e., the extent to which individuals look at the same places at the same time as others) and pupil dilation at event boundaries. Older and young adults watched naturalistic videos of actors performing everyday activities while we tracked their eye movements. Afterward, they segmented the videos into subevents. Replicating prior work, we found that pupil size and gaze similarity increased at event boundaries. Thus, there were fewer individual differences in eye position at boundaries. We also found that young adults had higher gaze similarity than older adults throughout an entire video and at event boundaries. This study is the first to show that age-related differences in how people parse continuous everyday activities into events may be partially explained by individual differences in gaze patterns. Those who segment less normatively may do so because they fixate less normative regions. Results have implications for future interventions designed to improve encoding in older adults. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

中文翻译：

---

眼球运动和事件分割：眼球运动揭示了事件模型更新中与年龄相关的差异。

人们自发地将持续进行的动作分成事件序列。先前的研究发现，事件边界处的目光相似度和瞳孔扩张会增加，并且老年人的分类比年轻人更特殊。我们使用眼动追踪来探索与年龄相关的凝视相似性（即个体与其他人同时注视同一地点的程度）和事件边界处的瞳孔扩张的差异。老年人和年轻人观看演员进行日常活动的自然视频，同时我们跟踪他们的眼球运动。随后，他们将视频分割成子事件。重复之前的工作，我们发现瞳孔大小和注视相似度在事件边界处增加。因此，边界处眼睛位置的个体差异较小。我们还发现，在整个视频和事件边界处，年轻人的目光相似度高于老年人。这项研究首次表明，人们如何将连续的日常活动解析为事件的年龄相关差异可能部分是由注视模式的个体差异来解释的。那些划分不太规范的人可能会这样做，因为他们关注的是不太规范的区域。结果对未来旨在改善老年人编码的干预措施具有影响。（PsycInfo 数据库记录 (c) 2023 APA，保留所有权利）。