About the Authors

Mark Tomlinson

markt@sun.ac.za

Affiliations Department of Psychology, Stellenbosch University, Stellenbosch, South Africa, Centre of Excellence in Human Development, University Witwatersrand, Johannesburg, South Africa

Competing Interests

I have read the journal's policy and the author of this manuscript has the following competing interest: MT is a member of the Editorial Board of PLOS Medicine.