TableĀ 1.

Initial distribution and final outcomes of grape halves in the four games (conditions). The number before the slash is the number of grape halves in the proposer's position, and the numbers after the slash are the responder's with the number before the semicolon being grape halves that can be stolen and the final number being the portion that cannot be stolen. Circles represent grape halves, and those above the line represent the portion that can be pulled away by the proposer. Number and percentage of trials in which grape halves were taken by proposers and rejected by responders are shown for both ape species combined.

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