“…However, research in the last decade has reported inconsistent relationships between various aspects of wellbeing and academic achievement (e.g. Heckman, Stixrud & Urzua, 2006;Berger, Alcalay, Torretti & Milicic, 2011;Suldo & Shaffer, 2008;Saab & Klinger, 2010;Nicholson, Lucas, Berthelsen & Wake, 2012). Heckman et al (2006), for example, used data from the 1979 National Longitudinal Survey of Youth (participants aged 14 to 22 years-old) to demonstrate that non-cognitive traits, in this case self esteem (Rosenberg, 1965) and locus of control (Rotter, 1966), can be a more powerful predictor of school and life success than cognitive traits such as IQ.…”