中文摘要：

以优化图标搜索任务的用户认知模型为目的,通过行为实验研究了搜索任务与视觉元素之间的关系.文中采用响应面分析方法测量了图标阵列、图标线框粗细与搜索反应时的相关关系,构建了搜索反应时与图标阵列大小的线性拟合关系式;依据眼动轨迹、视觉热点图等眼动数据,确认了色彩及形状在视觉引导中的作用,推测出搜索行为中视知觉使用了＂分组策略＂,认知模型的视觉模块包括了自下而上的视觉预加工阶段和目标驱动型的自上而下加工阶段.最后结合理性思维的自适应控制系统模型（ACT-R模型）,描述了图标搜索任务的用户认知模型.

英文摘要：

This study aims to optimize the cognitive model in icon search behavior. The psychology behavioral experiment was carried out to investigate the relationship between search performance and visual elements. The response surface methodology was adopted to explore the correlation between icon arrays, line width and reaction time of search tasks. A linear fitting equation has proposed to depict the relationship between search time and icon arrays. The eye scan paths and heat maps uncover the color and shape effect on visual guiding. Therefore, it is inferred that the＂ Grouping Strategy＂ be employed in search tasks. And during the search process, the visual module of cognitive model includes two stages. One is pre-attentive stage driven by bottom-up processing, and the other is target orientation stage driven by top-down processing. The conclusion has been added to the Adaptive Control of Thought-Rational（ACT-R） model to describe the cognitive model in icon search behavior.