“…ADHD Rating Scale IV (DuPaul et al, 1997) is a questionnaire designed with the 18 symptoms of ADHD. The current study was applied using the version validated in Ecuador, following a self-report format, which has reported an adequate factorial adjustment (χ 2 = 208.50, p < .01, CFI = .87, root mean square error of approximation [RMSEA] = .04, 90% CI = [.03, –.05]) and good internal consistency for the scale (α = .83; Ramos & Pérez-Salas, 2016). Each item was awarded zero points when the behavior had a never frequency, with one when the answer was sometimes , with two when the answer was frequently and with three points when the response was very frequently .…”