“…This review identified 65 ADHD studies with a median sample size of 76 (children) and 55.5 (adults; range 23–378). Of these, 56 studied children and adolescents (average age of 11 years; Kuperman et al, 1996; Clarke et al, 1998, 2001a,b,c,d, 2002a,b,c,d,e,f, 2003, 2006, 2007, 2008b, 2011, 2013, 2016; Bresnahan et al, 1999; Swartwood et al, 2003; Hermens et al, 2005a,b,c; Magee et al, 2005; Hobbs et al, 2007; Fonseca et al, 2008, 2013; Barry et al, 2009a,b, 2010; Sohn et al, 2010; Dupuy et al, 2011, 2013, 2014a,b; Lansbergen et al, 2011; Ogrim et al, 2012; Shi et al, 2012; Liechti et al, 2013; Buyck and Wiersema, 2014a,b, 2015; Poil et al, 2014; Tye et al, 2014; Kitsune et al, 2015; Roh et al, 2015; Kamida et al, 2016; Kim et al, 2016; Thomas and Viljoen, 2016; Giertuga et al, 2017; Jarrett et al, 2017; Markovska-Simoska and Pop-Jordanova, 2017; Park et al, 2017; Rommel et al, 2017; Shephard et al, 2018) and 14 studied adults (average age of 33 years; Bresnahan et al, 1999, 2006; Bresnahan and Barry, 2002; Hermens et al, 2004; Clarke et al, 2008a; Koehler et al, 2009; van Dongen-Boomsma et al, 2010; Woltering et al, 2012; Liechti et al, 2013; Buyck and Wiersema, 2014a; Poil et al, 2014; Rommel et al, 2016; Markovska-Simoska and Pop-Jordanova, 2017; Tombor et al, 2018). Five of these studies included both adults and children as participant groups (Bresnahan et al, 1999; Liechti et al, …”