Henderson John M, Luke Steven G
Institute for Mind and Brain, University of South Carolina.
J Exp Psychol Hum Percept Perform. 2014 Aug;40(4):1390-400. doi: 10.1037/a0036330. Epub 2014 Apr 14.
Mean fixation duration and mean saccade amplitude during active viewing tasks differ from person to person. Previous studies have shown that these individual differences tend to be stable across at least some tasks, suggesting that they may reflect underlying traits associated with individuals. However, whether these individual differences are also stable over time has not been established. The present study established stable individual differences in mean fixation duration and mean saccade amplitude across 4 viewing tasks, showed that the observed individual differences are stable over several days, and extended these results to standard deviations of fixation duration and saccade amplitude. The results have implications for theories of eye movement control and for using eye movement characteristics as individual difference measures.
在主动观看任务中，平均注视持续时间和平均扫视幅度因人而异。先前的研究表明，这些个体差异在至少一些任务中往往是稳定的，这表明它们可能反映了与个体相关的潜在特质。然而，这些个体差异是否也随时间保持稳定尚未得到证实。本研究确定了在4项观看任务中平均注视持续时间和平均扫视幅度存在稳定的个体差异，表明观察到的个体差异在数天内是稳定的，并将这些结果扩展到注视持续时间和扫视幅度的标准差。这些结果对眼动控制理论以及将眼动特征用作个体差异测量具有启示意义。
