Table S2.

Correlations and paired t tests between individual contributions to the computer and contributions to humans across six rounds (rounds 1–6; n = 72; Fig. S1)

RoundMean contributionMean increaseCorrelation*Paired t(df)Significance
18.30.60.731.0(71)0.339
28.30.60.691.0(71)0.307
38.00.30.640.3(71)0.695
48.30.60.580.8(71)0.427
58.10.40.630.5(71)0.598
67.4−0.30.69−0.4(71)0.710
1–68.10.40.780.7(71)0.471
  • Mean increase, mean contribution with humans minus the mean contribution to computers (7.7 MU).

  • * Significance was below 0.001 in all cases.