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. 2015 Nov 26;5:16781. doi: 10.1038/srep16781

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(a) Improvements in basket efficacy across chains in the four treatments (Asocial: open squares; Emulation: open triangles; Imitation: solid circles; Teaching: crosses). Points are means ± S.E. from raw data. (b) Probability of basket breakage across the four treatments (A: Asocial; E: Emulation; I: Imitation; T: Teaching). Bars show means ± S.E.