ClinicalTrials.gg
CompletedNCT03749824Updated Nov 21, 2018

Investigation of Psychophysiological Response to Aversive Stimuli Over Time With Omega-3

An interventional study of Omega-3 and Placebo Capsules in Conduct Disorder, ADHD and Oppositional Defiant Disorder, sponsored by Yale-NUS College. Completed. Open to participants aged 7 Years to 16 Years. Per ClinicalTrials.gov, last updated 2018-11-21.

Sponsored by Yale-NUS College · Not applicable, Interventional, and Health services research

From the registry’s dates

  • Registered 7 years 2 months after the study started (first participant enrolled Aug 2011, registered Oct 2018).
Phase
Not applicable
Study type
Interventional
Enrollment
133
Allocation
Randomized
Ages
7 Years to 16 Years
Sex
All
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Study summary

This study investigates the psychophysiological responses to aversive stimuli in a population of 133 children clinically diagnosed with conduct disorder (CD) and/or attention-deficit/hyperactivity disorder (ADHD). Participants were administered with either omega-3 or placebo for a period of 6 months and were exposed to three stimuli every three months: 1) a loud sound, 2) threatening photographs from the International Affective Picture System (IAPS), and 3) the Trier Social Stress Task (TSST). Participants' psychophysiological features of heart rate and galvanic skin conductance were measured and analyzed in relation to their omega-3/placebo condition clinical diagnosis.

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Conditions studied

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In context

Conduct Disorder

101 studies on the registry are indexed under Conduct Disorder; 15 are open to participants now.

This study's enrollment of 133 is close to the median of 124 across 80 interventional studies indexed under Conduct Disorder.

Browse Conduct Disorder studies →

Lead sponsor

Yale-NUS College is the lead sponsor of 29 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
7 Years to 16 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Subjects between ages 7 and 16 years
  2. Subjects who fulfil all criteria for a diagnosis of ADHD, conduct disorder, or oppositional defiant disorder
  3. Subjects with willingness to participate in a randomized, double-blind controlled trial
  4. Subjects with complete written, informed parental consent and child assent
  5. Subjects with IQ of 70 or more

Exclusion criteria

Exclusion Criteria:

  1. Subjects who have IQ in the below 70
  2. Subjects who are younger than 7 years old or older than 16 years old
  3. Those without written parental consent
  4. Those with brain pathology such as serious head injury, epilepsy, etc.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

DSM diagnostic criteria

The American Psychiatric Association’s manual of mental health diagnoses. DSM-5 (2013, revised as DSM-5-TR in 2022) replaced DSM-IV, and some studies still name the older edition. “Meets DSM criteria for …” means diagnosed by that edition’s diagnostic criteria, usually by a clinician in an interview.

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Study design

Phase
Not applicable
Primary purpose
Health services research
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
133 participants (actual)

Study arms

  • Experimental
    Omega-3

    Children in this group will be given 400 mg of DHA and 600 mg of EPA. Caregivers will be instructed to give two 500mg Omega-3 capsules twice a day, at breakfast and at the evening meal for 6 months. Parents will be seen by the attending on a monthly basis for standard treatment procedure.

    Dietary Supplement: Omega-3

  • Placebo comparator
    Placebo Capsules

    Children in this group will be given two placebo capsules twice daily; at breakfast and at the evening meal for a total period of 6 months.

    Dietary Supplement: Placebo Capsules

Interventions

  • Dietary supplementOmega-3

    Omega-3 supplement is a highly concentrated fish oil brain booster supplement that helps compensate for the neurocognitive and brain dysfunction which acts as a predisposition to antisocial and violent behaviour. Individuals with antisocial personality disorder have been found to show an 11% reduction in gray matter in the prefrontal cortex (Raine et al. 2001), and structural prefrontal impairments are hypothesised to result in disinhibition of limbic subcortical structures that give rise to aggressive behaviour. Omega-3 (specifically DHA) is known to play a key role in neuronal structure and function.

  • Dietary supplementPlacebo Capsules

    Children in this group will be given two placebo capsules twice daily; at breakfast and at the evening meal for a total period of 6 months.

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What researchers measure

Primary outcomes

  1. Change from Baseline Heart Rate at 6 months

    For Trier Social Stress Task

    Time frame: 7 minutes each at 0 months and 6 months

  2. Change from Baseline Skin Conductance Response at 6 months

    For loud sound

    Time frame: 4 minutes each at 0 months and 6 months

  3. Change from Baseline Skin Conductance Response at 6 months

    For threatening photographs

    Time frame: 4 minutes each at 0 months and 6 months

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Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Aug 2011 to primary completion in Aug 2015, 48 months.

Of 29 interventional studies with no phase under Conduct Disorder, half reached primary completion within 28 months of starting (the median), counting those still running; a quarter within 22 and three quarters within 68. This study's 48 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 29, 2018
First posted
Nov 21, 2018
StartActual
Aug 2011
Primary completionActual
Aug 2015
CompletionActual
Aug 2015
Last update
Nov 21, 2018
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Nov 21, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03749824
Lead sponsor
Yale-NUS College
Responsible party
Jean Liu (Assistant Professor, Yale-NUS College) — Principal investigator
First posted
Nov 21, 2018
Start date
Aug 2011
Primary completion
Aug 2015
Completion
Aug 2015
Last update
Nov 21, 2018

Study contacts

Daniel Fung
study director · Institute of Mental Health, Singapore

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Omega-3 fatty acid

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