中文摘要：

利用E-Prime呈现视觉刺激材料,排除大小、位置、颜色干扰,通过被试内重复设计的反应时实验获得间距控制的信息显示密度与识别反应时的关系,借助反应时与识别效率的负相关性确定出信息显示密度与识别效率及识别可靠性的关系。结果表明：①行列距控制的信息显示密度对人搜索效率有显著影响,两者存在近似的倒U形曲线关系。②字符尺寸固定（2em）,行距0.7倍,列距0.3倍时的识别效率最大,识别可靠性较高。因此建议设计网页字符的显示间距时,以此关系曲线为基础,通过对识别反应时及识别错误率的综合考虑确定合适的间距值。

英文摘要：

An experiment was conducted to investigate the relationship of information display density,recognition efficiency and reliability.The results indicate that,firstly,density controled by spacing is one of the most important factors which affect search efficiency and there is a reverse U-shaped curve between them;Secondly,when the spacing and character size ratio tends to be 0.7times or the column spacing is 0.3times,there is a minimum reaction time,a maximum recognition efficiency and a higher recognition reliability on the basis of the commonly size of characters.So this can provide an advice to dectermine the proper spacing.