Impulsive responses in children with conduct disorder and borderline intellectual functioning

Area of Science:

• Neuroscience
• Developmental Psychology
• Child Psychiatry

Background:

• Conduct disorder (CD) and borderline intellectual functioning (BIF) are prevalent in child populations.
• Understanding cognitive deficits in CD and BIF is crucial for targeted interventions.
• Response inhibition is a key executive function often impaired in neurodevelopmental disorders.

Purpose of the Study:

• To investigate response inhibition deficits in children with a dual diagnosis of CD and BIF.
• To compare the performance of children with CD and BIF to a typically developing control group.
• To examine the influence of auditory cues on response inhibition in this clinical population.

Main Methods:

• Utilized the Alertness test, a cognitive assessment measuring response inhibition.
• Employed two conditions: a simple visual go-signal and a go-signal preceded by an auditory warning cue.
• Compared performance between a group of children with CD and BIF and a matched control group.

Main Results:

• Children with the dual diagnosis of CD and BIF exhibited significantly more premature responses than controls.
• Premature responses were particularly pronounced in the condition with the auditory warning signal.
• The observed impulsive response style was not fully explained by co-occurring attention deficit/hyperactivity disorder (ADHD) symptoms.

Conclusions:

• Children with conduct disorder and borderline intellectual functioning demonstrate significant impairments in response inhibition.
• The presence of an auditory cue exacerbates response inhibition difficulties in this population.
• These findings highlight the need for interventions addressing executive function deficits in children with CD and BIF.