Investigating visual attention toward foods in a salad buffet with mobile eye tracking

Mobile eye tracking (MET) enables the recording of gaze data in less-controlled research environments, but best practices for its use studies about visual attention to foods are yet undetermined. This study supports building a coherent framework this methodological approach by discussing current eye-tracking trends field, applying MET an experiment with real foods, and proposing approaches future studies. In experiment, 32 female participants’ were recorded while they inspected salad buffet 20 s then assembled self-choice salad. The functionality fixation, scanpath, pupil size measures was investigated, focusing on associations between movements food item color position, preference, selected measures. Dish placement affected relative amount visits single item, whereas preference not associated examined pupil-size measure did function elderly participants. Importantly, simple cluster analysis, based scanpath selection measure, helped illustrate different profiles view selection. It determined that position should be carefully considered involving could useful bringing forth behavioral differences revealed fixation parameters alone. identifying “attention-action” combining other seems fruitful way approaching individual viewing