The average height of the participant's left pupil as reported by the eye tracker.
<eyetracker> <eyetracker> <eyetracker>
This property returns the average height of the participant's left pupil during a given trial.
The following displays the value of meanleftpupilheight in a text stimulus:
<text sometext>
/ items= ("height = <% eyetracker.meanleftpupilheight %>")
</text>