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
  • Mean increase, mean contribution with humans minus the mean contribution to computers (7.7 MU).

  • * Significance was below 0.001 in all cases.