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Publisher's Note: Corrections to Table 1

Posted by PLOS_ONE_Group on 01 Mar 2013 at 00:25 GMT

In Table 1, the following cells in 'Paired 1' condition should be
highlighted in grey: Pal's first trial, Ayumu's first two trials and
Puchi's second and third trials. During these trials, a participant
observed the demonstrator's "straw-sucking" technique within a
distance of 50 cm. Please click the following link for the modified

No competing interests declared.