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

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(a) Mean number of changes in materials ( ± S.E.) at each step in the chain across the four treatments (b) Number of changes in materials as a function of the mass of rice carried by the previous basket in Asocial (squares) Emulation (triangles) and Teaching groups (crosses). Lines are predicted means ± S.E. from GLMM analysis.