“…The starting point of this literature is the observation that children develop preferences for equity quite early in their lives (Blake & McAuliffe, 2011;Shaw & Olson, 2012), but adults seem to prefer efficiency over equity (Charness & Rabin, 2002;Engelmann & Strobel, 2004;Capraro, Smyth, Mylona & Niblo, 2014). In agreement with this view, several authors have observed a decrease in equity preferences accompanied by an increase in efficiency considerations from 8 to 19 years old (Almås, Cappelen, Sørensen & Tungodden, 2010;Fehr, Glätze-Rützler & Sutter, 2013;Martinsson, Nordblom, Rützler & Sutter, 2011;Meuwese, Crone, de Rooij & Güroğlu, 2015). Interestingly, this increase in efficiency considerations from childhood to adolescence appears to be stronger for boys than for girls (Almås et al, 2010;Meuwese et al, 2015).…”