Eye-tracking data quality as affected by ethnicity and experimental design
- 23 April 2013
- journal article
- clinical trial
- Published by Springer Science and Business Media LLC in Behavior Research Methods
- Vol. 46 (1), 67-80
- https://doi.org/10.3758/s13428-013-0343-0
Abstract
Lack of accuracy in eye-tracking data can be critical. If the point of gaze is not recorded accurately and reliably, the information obtained or action executed might be different from what the user intended. This study reports trackability, accuracy, and precision as indicators of eye-tracking data quality as measured at various head positions and light conditions for a sample of participants from three different ethnic groups. It was found that accuracy and precision for Asian participants was worse than that for African and Caucasian participants. No significant differences were found between the latter two ethnic groups. Operating distance had the largest effect on data quality, since it affected all indicators for all ethnic groups. Illumination had no significant effect on accuracy or precision, but the accuracy achieved by African and Caucasian participants was better when the stimulus was presented on a dark background. Large gaze angles proved to be detrimental for trackability for African participants, while accuracy and precision were also affected adversely by larger gaze angles for two of the ethnicities.This publication has 20 references indexed in Scilit:
- The influence of calibration method and eye physiology on eyetracking data qualityBehavior Research Methods, 2012
- Mode-of-disparities error correction of eye-tracking dataBehavior Research Methods, 2011
- Performance changes in lung nodule detection following perceptual feedback of eye movementsPublished by SPIE-Intl Soc Optical Eng ,2008
- What can saliency models predict about eye movements? Spatial and sequential aspects of fixations during encoding and recognitionJournal of Vision, 2008
- The central fixation bias in scene viewing: Selecting an optimal viewing position independently of motor biases and image feature distributionsJournal of Vision, 2007
- Tracking the mind during reading via eye movements: Comments on Kliegl, Nuthmann, and Engbert (2006).Journal of Experimental Psychology: General, 2007
- Comparing the accuracy of video-oculography and the scleral search coil system in human eye movement analysisAuris Nasus Larynx, 2005
- Eye movements and hazard perception in police pursuit and emergency response driving.Journal of Experimental Psychology: Applied, 2003
- Generation-V dual-Purkinje-image eyetrackerApplied Optics, 1985
- Reduction and calibration of eye monitor dataBehavior Research Methods, 1981