“…These factors may interact and do not always imply causality. They range from divorce (Allen, 2010), poverty (Russell, Ford, Rosenberg, & Kelly, 2013), parenting styles (Johnston, Mash, Miller, & Ninowski, 2012), low maternal education, lone parenthood and reception of social welfare ((Hjern, Weitoft, & Lindblad, 2010), sexual abuse (Weinstein, Staffelbach, & Biaggio, 2000), lack of sleep (Thakkar, 2013), heritability (Larsson, Chang, D’Onofrio, & Lichtenstein, 2013) and perinatal issues (Schmitt & Romanos, 2012) to eczema (Schmitt, Buske-Kirschbaum, & Roessner, 2010), artificial food additives (McCann et al, 2007), mobile phone use (Byun et al, 2013) and growing up in areas with low solar intensity (Arns, van der Heijden, Arnold, & Kenemans, 2013). All these factors and more may play a role when a particular child exhibits impairing hyperactive and inattentive behaviours, and there is no conclusive cause of ADHD.…”