The fourth sentence of the second paragraph under the heading Participants in the Materials and methods section, and the third and last sentences of the third paragraph under the heading Procedure in the Materials and methods section should have cited reference 49 instead of 54. The first sentence of the second paragraph of the Conclusions section should have cited reference 13 instead of 16. The correct sentences should read: “The musical interactions typically took place as a series of fairly short bouts (as in ) interspersed with preparatory or reflective episodes, rather than extending continuously through the time allotted.” “As Hawkins, Cross & Ogden [49: 321–3] had found that the specific instructions given to participants substantially affected the extent to which participants (same-sex friends) engaged cooperatively and successfully in their musical task, we carried out a series of pilot studies in order to develop appropriate instructions for our participants, who were all same-sex strangers.” “As in , we aimed to be as explicit as was required for the interaction to be cooperative and naturalistic while avoiding over-prescriptiveness by providing them with an easily understood common goal”. (Figure Presented).
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