How Is Chimpanzee Self-Control Influenced by Social Setting?

<table>Accumulation performance as a function of the presence/absence of a conspecific working independently on the same test type in an adjacent enclosure.  Error bars represent Standard Error of the Mean.  An asterisk above a pair of bars represents a significant difference between conditions.</table>

Scientifica

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Figure 1

Figure 1: How Is Chimpanzee Self-Control Influenced by Social Setting? 