Interference of irrelevant salient variables may cause difficulties for students. This study focused on eye tracking during the comparison of perimeters task, in which area is the interfering irrelevant salient variable. There were three trial types: congruent (larger area—larger perimeter), incongruent inverse (larger area—smaller perimeter), and incongruent equal (larger area—equal perimeter). Behavioral findings corroborated previous studies: congruent trials yielded higher accuracy and a shorter reaction time than did incongruent trials. Surprisingly, the area saliency could not be revealed in fixation location and duration measurements in incongruent inverse trials nor in the heat maps for incongruent inverse or incongruent equal trials, suggesting that such processing does not require overt attention; measures of attention shift from one geometrical shape to another were higher for incongruent equal trials, as was pupil dilation, suggesting that greater effort is associated with solving incongruent equal trials.

中文翻译：

---

几何中的直觉干扰：眼动追踪研究

干扰无关紧要的变量可能会给学生造成困难。这项研究的重点是在比较周长任务期间的眼动追踪，其中区域是干扰无关的显着变量。共有三种试验类型：全等（面积较大-较大周长），全反数（较大区域-较小周长）和全等量（较大的面积-等周长）。行为学发现证实了先前的研究：与不一致的试验相比，一致的试验具有更高的准确性和更短的反应时间。出人意料的是，在不一致的反向试验中，在固定位置和持续时间的测量中，或在不一致的反向试验或不一致的相等试验的热图中，都没有显示出区域显着性，这表明这种处理不需要特别注意；