Table 3

Video type effect on all looking parameters investigated: cumulative fixation duration (FixDur), fixation number (FixNum), mean fixation duration (MeanFix), total looking time (LookT) on the entire face, the eyes and the mouth, as well as exploration distance (ExplorDistance) and the feature index

LookingparameterDynamicStaticχ2 (df = 1), n = 192,
p value
median (IQR)median (IQR)
FixDur face1318.51 (1048.08–1512.81)1269.04 (978.38–1497.71)3.00, 0.083
FixNum face4.87 (4.00–5.50)4.82 (4.05–5.57)0.89, 0.34
MeanFix face273.05 (225.98–327.38)263.35 (207.90–305.57)21.33, 0.000
LookT face1687.10 (1464.07–1862.00)1655.48 (1400.45–1845.85)2.08, 0.15
FixDur eyes145.74 (42.89–265.92)156.75 (57.86–326.73)7.40, 0.0065
FixNum eyes0.63 (0.21–1.25)0.75 (0.22–1.47)4.26, 0.039
MeanFix eyes90.99 (32.88–157.91)97.40 (43.25–163.75)1.22, 0.27
LookT eyes199.50 (72.57–363.35)225.29 (94.66–443.80)8.33, 0.0039
FixDur mouth148.45 (37.80–322.05)105.68 (32.49–306.04)0.05, 0.82
FixNum mouth0.43 (0.14–1.09)0.41 (0.13–1.00)0.60, 0.44
MeanFix mouth99.79 (28.72–193.26)75.88 (25.31–178.24)6.08, 0.014
LookT mouth216.93 (79.43–573.30)204.05 (63.28–557.71)2.08, 0.15
ExplorDistance10.73 (6.23–13.56)11.03 (7.07–13.49)0.083, 0.77
Feature index–0.26 (–0.50–0.063)–0.23 (–0.49–0.097)0.76, 0.38
  • Table shows group medians and interquartile range (IQR) of all eight subjects per condition and results of Friedman’s ANOVA (last column) with test statistic value (χ2), degrees of freedom (df), number of values per condition included in the statistical analysis (n), and significance level (p value). Groups were regarded as statistically significant at p <0.05; p values <0.001 were rounded to 0.000.