Table 2 Descriptive statistics for infants’ behavioral responses during Session 2 and the results of comparisons between stimuli (N = 22).

From: Eight-month-old infants’ behavioral responses to peers’ emotions as related to the asymmetric frontal cortex activity

 

Peer Crying

Peer Laughing

p

M

SE

%

M

SE

%

Looking timea

68.88

4.16

NA

59.80

3.73

NA

0.02

Vocalizationsb

   Negative

24.62

8.12

50.0

6.16

2.74

27.3

0.01

   Positive

3.79

2.10

18.2

6.44

2.68

31.8

0.43

   Neutral

18.18

5.10

59.1

20.90

5.05

54.5

0.57

Facial expressionsb

   Negative

21.21

7.61

45.5

6.29

3.28

27.3

0.02

   Happy

11.36

3.36

50.0

28.74

6.27

72.7

0.00

Approachb

24.62

5.04

72.7

27.55

6.19

68.2

0.61

Withdrawalb

51.52

6.41

91.9

47.74

5.33

95.5

0.52

  1. Note. % Refers to the percentage of infants displaying the behavioral response; aPercentage of absolute duration from the stimulation duration; bPercentage of 10-seconds units for which the behavior was present from the total number of units.
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