Participants will receive open-label treatment with Omega-3 Fatty Acids. All participants must also be treated with a stable dose of a traditional ADHD medication at the time of enrollment.

The Behavior Rating Inventory of Executive Function - Parent Form (BRIEF-Parent) is a 75-item checklist with a large normative sample, internal consistency, test-retest reliability, inter-rater reliability, and external and concurrent validity, divided into nine empirically and theoretically derived and T-scored subscales. The Emotional Control subscale measures the impact of executive function problems on emotional expression and assesses a child's ability to modulate or control his or her emotional responses. It is a 10-item subscale, and each item is scored "Never," "Sometimes," or "Often." Raw scores for all scales are computed with Software Portfolio (BRIEF-SP), which provides a raw score and T score (based on child's age) for each scale. Higher scores represent more greater emotional dysregulation.

The Clinical Global Impression (CGI) is a clinician rated measure of illness severity, improvement, and efficacy of treatment (collected at all study visits). We examined the CGI Improvement specifically. The CGI Improvement for Deficient Emotional Self-Regulation (DESR) was reported at baseline and completion. The CGI-I is a 7 point scale that requires the clinician to assess how much the patient's illness has improved or worsened relative to a baseline state at the beginning of the intervention. It is rated as:

1. Very much improved
2. Much improved
3. Minimally improved
4. No change
5. Minimally worse
6. Much worse
7. Very much worse

Participants will receive open-label treatment with Omega-3 Fatty Acids. All participants must also be treated with a stable dose of a traditional ADHD medication at the time of enrollment.

The Behavior Rating Inventory of Executive Function - Parent Form (BRIEF-Parent) is a 75-item checklist with a large normative sample, internal consistency, test-retest reliability, inter-rater reliability, and external and concurrent validity, divided into nine empirically and theoretically derived and T-scored subscales. The Emotional Control subscale measures the impact of executive function problems on emotional expression and assesses a child's ability to modulate or control his or her emotional responses. It is a 10-item subscale, and each item is scored "Never," "Sometimes," or "Often." Raw scores for all scales are computed with Software Portfolio (BRIEF-SP), which provides a raw score and T score (based on child's age) for each scale. Higher scores represent more greater emotional dysregulation.

Ten participants completed at least 6 weeks of the 12 week trial. These 10 participants were included in the analysis.

Participants will receive open-label treatment with Omega-3 Fatty Acids. All participants must also be treated with a stable dose of a traditional ADHD medication at the time of enrollment.