in this overview of 11 different studies all 6 of the EPA focused studies showed significant outcome, typically to all scales and indexes tested, while only 2 out of the 5 DHA focused studies showed only partial improvement. of the 3 DHA focused studies that showed no benefit, one of them administered DHA only without any EPA content and another one showed a marginal worsening of symptoms!
EPA vs. DHA Omega 3 in Childhood Disorders of Mood and Behavior