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Neuropsychological abilities of preschool-aged children who display hyperactivity and/or oppositional-defiant
Sara D Youngwirth1, Elizabeth A Harvey, Elizabeth C Gates
1School of Education, University of Massachusetts, Amherst, MA 01003, USA.
Insights
Preschool children with hyperactivity, especially when combined with oppositional defiance, show neuropsychological deficits. Neuropsychological testing, particularly executive function and continuous performance tests, aids assessment but requires complementary methods.
Area of Science:
- Child Psychology
- Neuropsychology
- Developmental Pediatrics
Background:
- Hyperactivity and oppositional defiance are common behavioral issues in preschool children.
- Understanding the underlying neuropsychological abilities is crucial for early intervention.
- Comorbid conditions may present unique challenges in assessment.
Purpose of the Study:
- To investigate the neuropsychological functioning of preschool children with hyperactivity and/or oppositional defiance.
- To examine performance on attention/executive function, language, memory, and sensorimotor tasks.
- To evaluate the predictive power of specific neuropsychological tests.
Main Methods:
- Study included 237 children aged 48-67 months, categorized into hyperactive only, oppositional-defiant only, hyperactive and oppositional-defiant, and nonproblem groups.
- Neuropsychological abilities assessed using the NEPSY and Conners' K-CPT.
- Behavioral data collected via maternal reports, rating scales, and diagnostic interviews.
Main Results:
- Children with both hyperactivity and oppositional defiance (HYP/OD) performed significantly worse on NEPSY subtests measuring executive function, language comprehension, and verbal memory compared to nonproblem children.
- The NEPSY Statue subtest (executive function) showed significant predictive power but poor sensitivity.
- Children with hyperactivity (HYP) and HYP/OD groups performed worse on the Conners' K-CPT (continuous performance test) than OD and nonproblem groups.
- Combined use of NEPSY Statue and K-CPT yielded a predictive power of .74.
Conclusions:
- Preschool children exhibiting hyperactivity, particularly with comorbid oppositional defiance, demonstrate observable neuropsychological deficits.
- Executive function and continuous performance tests are valuable but have limitations in sensitivity and predictive power alone.
- Neuropsychological assessments should be integrated with other evaluation methods for comprehensive understanding.
Abstract:
This study focused on gaining a better understanding of the neuropsychological abilities of preschool-aged children who show elevated levels of hyperactivity and oppositional-defiance. It examined the performance of children aged 48 to 67 months on tests of attention/executive function, language, memory, and sensorimotor abilities, as measured by the NEPSY and Conners' K-CPT. Two hundred thirty-seven children were divided into four subgroups based on mothers' report of behavior using rating scales and a diagnostic interview: hyperactive only (HYP), oppositional-defiant only (OD), hyperactive and oppositional-defiant (HYP/OD), and nonproblem. Children in the HYP/OD group scored significantly worse than nonproblem children on four of nine subtests on the NEPSY, including one test of executive function, one test of language comprehension, and both tests of short-term verbal memory. However, only the test of executive function (Statue) showed significant predictive power, and, while specificity of this subtest was good, sensitivity was poor. On the K-CPT, a continuous performance test, children in both the HYP and HYP/OD groups performed worse than children in the OD and nonproblem groups. When the NEPSY Statue subtest and the K-CPT were used together, overall predictive power was .74. Results suggest that neuropsychological deficits can be observed among preschool children with hyperactivity, particularly when comorbid oppositional-defiance is present; however, moderate predictive power suggests that these tests should be used in conjunction with other methods of assessment.
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