期刊
JOURNAL OF EYE MOVEMENT RESEARCH
卷 12, 期 6, 页码 -出版社
INT GROUP EYE MOVEMENT RESEARCH
DOI: 10.16910/jemr.12.6.11
关键词
Eye movement; eye tracking; microsaccades; gaze; attention; reliability; intra-individual variability; individual differences; ADHD; mind wandering
Even if all external circumstances are kept equal, the oculomotor system shows intra-individual variability over time, affecting measures such as microsaccade rate, blink rate, pupil size, and gaze position. Recently, some of these measures have been associated with ADHD on a between-subject level. However, it remains unclear to what extent these measures constitute stable individual traits. In the current study, we investigate the intra-individual reliability of these oculomotor features. Combining results over three experiments (> 100 healthy participants), we find that most measures show good intra-individual reliability over different time points (repeatability) as well as over different conditions (generalisation). However, we find evidence against any correlation with self-assessed ADHD tendencies, mind wandering, and impulsivity. As such, the oculomotor system shows reliable intra-individual reliability, but its benefit for investigating self-assessed individual differences in healthy subjects remains unclear. With our results, we highlight the importance of reliability and statistical power when studying between-subject differences.
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