*2.2. Apparatus*

A SensoMotoric Instruments (SMI) Glasses 2.0 Mobile Eye-tracker was used within the current investigation. Inside the frame of these glasses are one forward-facing camera recording a video of the environment in front of the wearer and two backward-facing cameras in the rim of the glasses recording the wearer's eye movements. The video data captured was processed using SMI BeGaze to give a single video output, comprising the video of the environment in front of the wearer with the gaze location superimposed on top. Each participant was fitted with the mobile eye-tracker and wore a peaked cap to help limit the influence of sunlight on data quality, which is consistent with previous real-world eye-tracking studies [44].
