“…Recent work also points to stable differences in executive function between early birds and night owls, which may explain their differences in time perspective. Specifically, a recent study by Milfont and Schwarzenthal (2014) showed that selfcontrol and ability to delay gratification are the mechanisms responsible for future-orientation in early birds, while deficiencies in these skills might account for the higher propensities for impulsivity and risktaking exhibited by evening-types (Caci et al, 2005;Killgore, 2007;Maestripieri, 2014). The hypothesis that there are chronotype-related differences in cognitive function is also consistent with evidence for differences in intelligence and in brain structure between early birds and night owls (Piffer, Ponzi, Sapienza, Zingales, & Maestripieri, 2014;Preckel, Lipnevich, Schneider, & Roberts, 2011;Rosenberg, Maximov, Reske, Grinberg, & Shah, 2014).…”