Table 1 F-statistic (numerator and denominator degrees of freedom), p-value after multiple comparison correction with False Discovery Rate (FDR) and partial eta squared (ηp2) for the authenticity by emotion interaction on maximum and mean pupil size, in each time window, are presented.

From: Pupil dilation reflects the authenticity of received nonverbal vocalizations

Time window (seconds)

Pupil size measure

Authenticity × emotion interaction

Pairwise comparisons (authentic vs. acted)

F-statistic (1, 27)

FDR corrected p-value

ηp2

Emotion

Mdiff

SDdiff

t-test (27)

FDR corrected p-value

ηp2

Significant contrasts

0–1

Maximum

5.77

.047*

.18

Laughter

 − 25.10

41.42

 − 3.23

.006*

.28

Acted > Authentic

Crying

0.47

31.38

0.08

.937

 < .01

–

Mean

4.12

.052

.13

Laughter

 − 12.45

29.11

 − 2.26

.064

.16

–

Crying

6.33

28.42

1.18

.249

.05

–

1–2

Maximum

9.36

.005*

.26

Laughter

 − 27.03

67.86

 − 2.11

.044*

.14

Acted > Authentic

Crying

24.98

45.42

2.91

.014*

.24

Authentic > Acted

Mean

13.82

.002*

.34

Laughter

 − 33.36

55.36

 − 3.19

.007*

.27

Acted > Authentic

Crying

18.59

46.18

2.13

.042*

.14

Authentic > Acted

2–3

Maximum

6.61

.032*

.20

Laughter

 − 24.33

75.27

 − 1.71

.099

.10

–

Crying

25.33

56.78

2.36

.051

.17

–

Mean

2.75

.109

.09

Laughter

 − 14.91

85.07

 − 0.93

.362

.03

–

Cryer

21.69

56.28

2.04

.103

.13

–

3–4

Maximum

6.79

.019*

.20

Laughter

 − 16.90

80.61

 − 1.11

.277

.04

–

Crying

49.36

85.42

3.06

.010*

.26

Authentic > Acted

Mean

6.23

.019*

.19

Laughter

4.42

75.92

0.31

.760

 < .01

–

Crying

52.26

86.27

3.21

.007*

.28

Authentic > Acted

  1. Mean difference (Mdiff), standard error difference (SDdiff), t-test (and degree of freedom), p-value after FDR correction and ηp2 are also presented for the follow-up post-hoc pairwise comparisons whereby authentic versus acted vocalizations were contrasted for each emotion (whilst means and SD per condition are provided in the Results’ section text).
  2. Statistical significance level: * p  < .05.
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