Binary logistic generalized linear model on the probability of Split versus Steal (N = 286, with errors clustered to 143 episodes).

1Older contestants were more likely to SPLIT.2Males were more likely to SPLIT with geographically distant opponents.3Over time, females became both more likely to SPLIT with females and less likely to SPLIT with males, males showed no change over time.4STEALING was more likely as stakes increased but SPLITTING was more likely as the loss in potential winnings was increased.5Promising was a reliable cue of increased probability of SPLITTING.6Initiating laughter was a reliable cue of increased probability of SPLITTING.7Touching was a reliable cue of STEALING, and being touched induced STEALING.8Touching may only be a reliable cue of STEALING for males.