^aInstitute of Child Development, University of Minnesota-Twin Cities, Minneapolis, MN, USA

Departments of ^bClinical Health Psychology, and

^cPediatrics and Child Health, Faculty of Medicine, University of Manitoba, Winnipeg, MB, Canada

Corresponding author. Address: 203—147 Provencher Blvd, Winnipeg, MB R2H 0C9, Canada. Tel.: +1 204 235 1314. E-mail address: carl.vonbaeyer@gmail.com (C. L. von Baeyer).

Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article.

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Received May 22, 2015

Received in revised form August 30, 2015

Accepted October 30, 2015