Table 3.

Description of the eye-tracking variables.

Type of variable	Number of features	Description
Eye fixation	10	Mean number (and standard deviation) of fixations conducted per situation and total value during the entire experience
Inclusive gaze (per situation)	20	Per situation (4×), the average time (s) the participant looked at each virtual agent (6×) while speaking
Inclusive gaze (average)	5	Over the entire experience, the average time (s) spent by the participant talking while looking at each virtual agent (6×)
Averted gaze (per situation)	60	Per situation (4×), the average time (s) the participant looked at virtual agent B while virtual agent A was speaking (6×)
Averted gaze (average)	15	Over the entire experience, the average time (s) the participant looked at virtual agent B while virtual agent A was speaking

The environment is considered as another possible area to look at while speaking; thus, the time spent looking at the environment is also calculated, as it is a virtual agent itself.