遮挡范式下对碰撞时间的估计

本文研究视觉信息对碰撞时间估计的影响。实验采用遮挡范式（ｏｃｃｌｕｓｉｏｎ ｐａｒａｄｉｇｍ），遮挡一段固定的距离，让被试估计该段距离所用的时间。自变量为移动速度与挡板的宽度。过程：让被试看速度知觉仪上移动的红灯，估计碰撞发生时按下电键。结果表明，移动速度对时间估计的准确性影响显著，速度越大，估计准确性越高；移动速度还与挡板宽度存在交互作用，即速度快、挡板宽度时碰撞时间的估计更准确，而速度慢、挡板

Time - to - Collision Estimation in the Occlusion Paradigm

This study investigated the effects of some visual information on time - to - collision estimation. In the occlusion paradigm we sheltered a settled distance from the subjects and then told them to estimate the time. The independent variables were moving speed and baffle width. The results revealed that there were obvious effects of moving speed on time - to - collision estimation: the faster the speed, the more reliable the estimation, and the interaction of moving speed and baffle width. Therefore we concluded that the results of this study supported the ecological optics of perception, and the study could be helpful to present traffic accidents.