A good boss knows when to show workers a token of appreciation, so when you accomplish big goals or do a particularly good job, don't be afraid to reward yourself.

一个好的老板知道如何适时的对自己的员工表示赏识，所以，当你自己完成了一个大的目标，或者很好的完成了耨个特定的工作之后，不要吝啬对自己的奖赏。

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As with the human version of the game, if the partner accepted the token, both animals received their reward.

BBC: Sharing: Chimp study reveals origins of human fair play