Table 1 Contribution to the group project in response to peer contributions differing in their mean and heterogeneity.

From: Human cooperation in groups: variation begets variation

Peer contributions

Response contributions

Mean

Heterogeneity

Mean

s.d.

% min

% max

6.67

low

4.32

4.61

41.7

0.5

high

3.74

5.07

53.2

1.8

10.00

low

7.65

4.58

14.7

1.8

high

6.90

6.20

30.3

6.9

13.33

low

9.42

6.32

14.2

13.3

high

8.30

7.66

31.6

20.6

  1. The table shows averages, standard deviations and percentage of minimum and maximum contributions (respectively 0 and 20). In each row, two situations are compared where the peer contributions were equal on average, but differed in heterogeneity (see Fig. 1).
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