3. 3. Eye blink rate
A mixed-design ANOVA with Time (Ocular 1, Ocular 2, and Ocular 3) as a
within-participant factor and Group (stress group vs. control group) as
a between-participant factor was conducted on the recorded EBR (see
Figure 4A). No main effects of Time, F (2, 122) = 0.62, p =
.538, \(\eta_{p}^{2}\) = 0.01, or Group, F (1, 61) = 2.56,p = .115, \(\eta_{p}^{2}\) = 0.04, emerged as significant. There
was, however, a significant interaction effect of Time × Group,F (2, 122) =3.41, p = .036, \(\eta_{p}^{2}\) = 0.05.
Subsequent simple effect analysis (Bonferroni corrected) further
revealed that the EBR in the stress group was significantly higher than
that in the control group at the time point of Ocular 2 (p =
.032).