“…Researchers in the field have previously used different assessment tools, statistical methods and target populations, in their exploration of MI due to age and/or gender (Burns et al, 2006;Derks et al, 2007;Gomez and Vance, 2008;Gomez et al, 2012;Geiser et al, 2014;Gomez, 2013;Zeeuw et al, 2015;Wiesner et al, 2015;Gomez et al, 2016;Morin et al, 2016;Caci et al, 2016, Fumeaux et al 2017and Cogo-Moreira et al, 2017) and invariance due to the informant (for instance Gomez, 2007;Burns, 2009;Makransky and Bilenberg, 2014;King et al 2016). Overall, the results of MI studies so far suggest that informant, age, gender and culture have only small effects on ratings of ADHD symptoms.…”