A growing body of scientific literature is highlighting the negative effects of inadequate sleep. A survey carried out in Japan concluded that "shortened nocturnal sleep is a growing social phenomenon in industrialized countries.” Another study published in the Sleep Journal states: “It is widely recognized that sleep is important for children's health and well-being and that short sleep duration is associated with a wide range of negative health outcomes.” Both studies agree that that lack of healthy sleep is associated with negative physical, emotional as well as cognitive outcomes.