Roy Hessels
Departments of Experimental & Developmental Psychology, Utrecht University

University webpage: click here
E-mail: mail@ [replace with domain name]

Research interests: eye movements in visual search, eye movements in social interaction, development of oculomotor control, eye-tracking methodology, applied cognitive psychology

Upcoming workshop on infant eye tracking: click here
Upcoming 3-day course on eye tracking: click here

Selection of recent talks / courses:

12 Jan 2017: Gaze behavior in dyadic interaction. BAR Lab meeting. University of British Columbia, Canada.

4 Nov 2016: Eye tracking in difficult subjects. Eye-tracking workshop. University of Geneva, Switzerland.

24-26 Oct 2016: Eye-tracking research toolbox. Eye-tracking course organized by Tobii Pro. Amsterdam, the Netherlands.

5 Oct 2016: Methodological issues in infant eye-tracking. Keynote at Tobii Pro Boot Camp. Bro, Sweden.

21 Jun 2016: Fixation detection in noisy eye-movement data. Scandinavian Workshop on Applied Eye Tracking (SWAET) 2016. Turku, Finland.

18 Mar 2016: Fixation detection in noisy eye-movement data. Eye-Tracking Seminar Lund University. Lund, Sweden.

16 Feb 2016: Eye-tracking in infancy: how to solve methodological issues. Research Seminar in Psychology, University Tromsø (UiT). Tromsø, Norway.

13 Feb 2015: How to set up an infant eye-tracking lab. Eye-Tracking Seminar Lund University. Lund, Sweden.


Cousijn, J., Hessels, R. S., Van der Stigchel, S., & Kemner, C. (2017). Evaluation of the psychometric properties of the gap-overlap task in 10-month-old infants. Infancy. doi:10.1111/infa.12185

Niehorster, D. C., Cornelissen, T. H. W., Holmqvist, K., Hooge, I. T. C., & Hessels, R. S. (2017). What to expect from your remote eye-tracker when participants are unrestrained. Behavior Research Methods. doi:10.3758/s13428-017-0863-0

Hessels, R. S., Niehorster, D. C., Kemner, C., & Hooge, I. T. C. (2016). Noise-robust fixation detection in eye movement data: Identification by two-means clustering (I2MC). Behavior Research Methods. doi:10.3758/s13428-016-0822-1

Hessels, R. S., Hooge, I. T. C., & Kemner, C. (2016). An in-depth look at saccadic search in infancy. Journal of Vision. doi:10.1167/16.8.10

Hessels, R. S., Kemner, C., van den Boomen, C., & Hooge, I. T. C. (2015). The area-of-interest problem in eyetracking research: A noise-robust solution for face and sparse stimuli. Behavior Research Methods. doi:10.3758/s13428-015-0676-y

Hessels, R. S., Andersson, R., Hooge, I. T. C., Nyström, M., & Kemner, C. (2015). Consequences of Eye Color, Positioning, and Head Movement for Eye-Tracking Data Quality in Infant Research. Infancy. doi:10.1111/infa.12093

Hessels, R. S., Cornelissen, T. H. W., Kemner, C., & Hooge, I. T. C. (2014). Qualitative tests of remote eyetracker recovery and performance during head rotation. Behavior Research Methods. doi:10.3758/s13428-014-0507-6

Hessels, R. S., Hooge, I. T. C., Snijders, T. M., & Kemner, C. (2013). Is There a Limit to the Superiority of Individuals with ASD in Visual Search? Journal of Autism and Developmental Disorders. doi:10.1007/s10803-013-1886-8

Paffen, C., Hessels, R. S., & Van der Stigchel, S. (2012). Interocular conflict attracts attention. Attention, Perception & Psychophysics. doi:10.3758/s13414-011-0256-x