How Is Chimpanzee Self-Control Influenced by Social Setting?

<table>Accumulation performance as a function of whether the partner received free rewards during the delay interval (free condition) or passively waited to receive those items at the end of the test session (wait condition).  Error bars represent the Standard Error of the Mean.</table>

Scientifica

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Figure 2

Figure 2: How Is Chimpanzee Self-Control Influenced by Social Setting? 