Table 2 Dynamics of altruism and group polarization.

From: Creation, evolution, and dissolution of social groups

Semester

Percentage of changes that are

Group polarization 

Boundary

Egocentric

Altruistic

Percentage

Absolute

  

Weakly

Strongly

Increase

Difference

1-2

90.6

80.4

76.6

64.0

2.64

2-3

92.4

84.0

81.4

49.1

1.96

3-4

95.3

89.2

86.2

37.4

1.80

  1. Analysis of the total number of altruistic changes and the growth of group polarization across the three semester boundaries.
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