Morgante James D, Zolfaghari Rahman, Johnson Scott P
Department of Psychology University of California.
Infancy. 2012 Jan;17(1):9-32. doi: 10.1111/j.1532-7078.2011.00089.x. Epub 2011 Aug 29.
Infant eye tracking is becoming increasingly popular for its presumed precision relative to traditional looking time paradigms and potential to yield new insights into developmental processes. However, there is strong reason to suspect that the temporal and spatial resolution of popular eye tracking systems is not entirely accurate, potentially compromising any data from an infant eye tracking experiment. Moreover, "best practices" for infant eye tracking, such as knowing which software tool enhances experimental flexibility, remain to be determined. The present investigation was designed to evaluate the temporal and spatial accuracy of data from the Tobii T60XL eye tracker through the use of visual latency and spatial accuracy tasks involving adults and infants. Systematic delays and drifts were revealed in oculomotor response times, and the system's spatial accuracy was observed to deviate somewhat in excess of the manufacturer's estimates; the experimental flexibility of the system appears dependent on the chosen software.
婴儿眼动追踪因其相对于传统注视时间范式的高精度以及为发展过程带来新见解的潜力而越来越受欢迎。然而，有充分理由怀疑流行眼动追踪系统的时间和空间分辨率并不完全准确，这可能会影响婴儿眼动追踪实验得出的任何数据。此外，婴儿眼动追踪的“最佳实践”，比如了解哪种软件工具能提高实验灵活性，仍有待确定。本研究旨在通过使用涉及成人和婴儿的视觉潜伏期和空间准确性任务，评估托比T60XL眼动仪数据的时间和空间准确性。在眼动反应时间中发现了系统性延迟和漂移，并且观察到该系统的空间准确性偏离程度略高于制造商的估计；该系统的实验灵活性似乎取决于所选的软件。
