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. 2020 Aug 28;11:1921. doi: 10.3389/fpsyg.2020.01921

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Copyright © 2020 Bigelow and Power.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Infants’ non-distress vocalizations in the SSC and control groups during each phase of the Still Face Task at the 3-month visit. Vertical bars represent standard errors. Adapted from Bigelow and Power (2012, p. 247). Copyright © 2012, with permission from Elsevier.