Funding for this research was provided by:
Australian Research Council (DP140104294)
Text and Data Mining valid from 2019-02-11
Received: 7 August 2018
Accepted: 22 January 2019
First Online: 11 February 2019
Compliance with Ethical Standards
: The disengagement measure in the study is one part of a longer commercially available instrument authored by A.J.M.; no fee was involved in its use for this study. The authors report no other conflict of interest.
: All procedures performed in the current study involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study. As the study included minors, informed consent was also obtained from a parent or guardian for each individual participant.