Department of Psychology, University of Würzburg, Röntgenring 11, 97070, Würzburg, Germany.
Cogn Res Princ Implic. 2024 Apr 19;9(1):23. doi: 10.1186/s41235-024-00551-z.
Scrolling is a widely used mean to interact with visual displays, usually to move content to a certain target location on the display. Understanding how user scroll might identify potentially suboptimal use and allows to infer users' intentions. In the present study, we examined where users click on a scrollbar depending on the intended scrolling action. In two online experiments, click positions were systematically adapted to the intended scrolling action. Click position selection could not be explained as strict optimization of the distance traveled with the cursor, memory load, or motor-cognitive factors. By contrast, for identical scrolling actions click positions strongly depended on the context and on previous scrolls. The behavior of our participants closely resembled behavior observed for manipulation of other physical devices and suggested a simple heuristic of movement planning. The results have implications for modeling human-computer interaction and may contribute to predicting user behavior.
滚动是一种广泛用于与视觉显示交互的方式，通常用于将内容移动到显示上的某个目标位置。了解用户如何滚动可以识别潜在的次优使用方式，并可以推断用户的意图。在本研究中，我们研究了用户在点击滚动条时，根据预期的滚动动作，点击位置会如何变化。在两个在线实验中，我们系统地调整了点击位置，以适应预期的滚动动作。点击位置的选择不能用严格的优化来解释，如用光标移动的距离、记忆负荷或运动认知因素来解释。相比之下，对于相同的滚动动作，点击位置强烈依赖于上下文和之前的滚动。参与者的行为与对其他物理设备的操作非常相似，这表明了一种简单的运动规划启发式。研究结果对建模人机交互具有重要意义，并可能有助于预测用户行为。
