Consequences of Eye Color, Positioning, and Head Movement for Eye-Tracking Data Quality in Infant Research
Consequences of Eye Color, Positioning, and Head Movement for Eye-Tracking Data Quality in Infant Research
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DOI：
10.1111/infa.12093
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发表时间：
2015-11-01
期刊：
影响因子：
2.6
通讯作者：
Kemner, Chantal
中科院分区：
文献类型：
--
作者：
Hessels, Roy S.;Andersson, Richard;Kemner, Chantal
在过去的几十年里，眼动追踪已经成为研究婴儿注视行为的重要工具。然而，眼动追踪方法和实现高质量的数据已经受到了成年参与者的广泛关注，目前还不清楚这些结果如何推广到婴儿研究。这一点尤其重要，因为婴儿在眼动仪面前的行为与成人不同。在这项研究中，我们调查了眼睛生理，定位和婴儿行为是否影响眼动追踪数据质量的测量：准确性，精度和数据丢失。我们报告说，准确度和精度较低，更多的数据丢失发生在婴儿的眼睛颜色为蓝色的棕色相比，婴儿的眼睛颜色。此外，与坐在婴儿座椅上的婴儿相比，坐在高脚椅上或父母腿上的婴儿的准确性较低。最后，作为时间的函数，精度降低，数据丢失增加。我们强调了在比较多个组时数据质量的重要性，因为数据质量的差异会影响眼动跟踪测量。此外，我们研究了两种不同的措施来量化婴儿运动影响眼动仪数据质量。这些发现可能有助于研究人员收集数据，并帮助制造商为婴儿开发更好的眼睛跟踪系统。
Eye tracking has become a valuable tool for investigating infant looking behavior over the last decades. However, where eye-tracking methodology and achieving high data quality have received a much attention for adult participants, it is unclear how these results generalize to infant research. This is particularly important as infants behave different from adults in front of the eye tracker. In this study, we investigated whether eye physiology, positioning, and infant behavior affect measures of eye-tracking data quality: accuracy, precision, and data loss. We report that accuracy and precision are lower, and more data loss occurs for infants with bluish eye color compared to infants with brownish eye color. Moreover, accuracy was lower for infants positioned in a high chair or in the parents' lap compared to infants positioned in a baby seat. Finally, precision decreased and data loss increased as a function of time. We highlight the importance of data quality when comparing multiple groups, as differences in data quality can affect eye-tracking measures. In addition, we investigate how two different measures to quantify infant movement influence eye-tracker data quality. These findings might help researchers with data collection and help manufacturers develop better eye-tracking systems for infants.