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Soft neurological signs and impulsivity in children
B Vitiello1, D Stoff, M Atkins
1Department of Psychiatry, Medical College of Pennsylvania, Philadelphia.
Insights
Neurological soft signs in boys correlated with impulsive responses on cognitive tests, suggesting a link between neurological immaturity and difficulties with response inhibition.
Area of Science:
- Neuroscience
- Developmental Psychology
- Child Psychiatry
Background:
- Impulsivity is a complex trait with behavioral and cognitive dimensions.
- Neurological soft signs (NSS) may indicate underlying neurological dysfunction or immaturity.
- Understanding the relationship between NSS and impulsivity is crucial for diagnosing and treating disruptive behavior disorders.
Purpose of the Study:
- To investigate the association between neurological soft signs and different facets of impulsivity in boys.
- To determine if NSS relate to behavioral or cognitive impulsivity measures.
Main Methods:
- 31 boys with disruptive behavior disorders and 45 controls (ages 6-13) underwent neurological examinations for NSS.
- Participants completed clinical impulsivity ratings and cognitive tests measuring impulsive responding (e.g., Matching Familiar Figures Test, Continuous Performance Test).
- Data were analyzed for correlations between NSS and impulsivity measures, controlling for age and IQ.
Main Results:
- Neurological soft signs showed a positive correlation with impulsive responding on the Matching Familiar Figures Test and the Continuous Performance Test.
- This correlation was observed in both inpatient and normal groups for the Matching Familiar Figures Test, and in the normal group for the Continuous Performance Test.
- No significant correlation was found between NSS and IQ or clinical impulsivity ratings.
Conclusions:
- Findings suggest a link between neurological dysfunction/immaturity and impaired response inhibition on specific cognitive tasks.
- Neurological soft signs may contribute valuable information to the cognitive assessment of impulsivity in children.
- This research highlights the importance of considering neurological factors in understanding and addressing impulsivity.
Abstract:
To evaluate the relationship between soft neurological signs and various proposed dimensions of impulsivity (behavioral and cognitive), 31 boys (6-13 years, mean +/- SD 10.1 +/- 1.8) with disruptive behavior disorders, and 45 age-matched boys without DSM-III-R pathology, were independently assessed on clinical ratings of impulsivity, a battery of cognitive tests intended to score impulsive responding, and a neurological examination for soft signs. After being corrected for age, neurological soft signs correlated positively with impulsive responding on the Matching Familiar Figures Test (inpatients and normals) and the Continuous Performance Test (in normals), but not with IQ or clinical impulsivity rating scores. These findings suggest a relationship between neurological dysfunction/immaturity and performance on specific tasks requiring response inhibition, thus adding value to the cognitive assessment of impulsivity.