A scale measuring both strengths and weaknesses (SDQ; The Strengths and Difficulties Questionnaire) was also used for comparison, as it explores behavioral abnormalities in children within a broad age range.
Einnig var atferlislisti fyrir styrk og vanda (SDQ; The Strengths and Difficulties Questionnaire) notaður til samanburðar, en hann metur bæði veikleika og styrkleika barna á breiðu aldursbili.