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Performance discrepancies on the California Verbal Learning Test-Children's Version (CVLT-C) in children with

Jacobus Donders1, Michael T Minnema

  • 1Psychology Service, Mary Free Bed Hospital & Rehabilitation Center, Grand Rapids, Michigan 49503, USA. jdonders@mfbrc.com

Journal of the International Neuropsychological Society : JINS
|August 26, 2004
PubMed

Insights

Children with traumatic brain injury (TBI) often struggle with proactive interference (PI), impacting verbal learning. This study found PI effects were more common in TBI patients than in the general population.

Area of Science:

  • Neuropsychology
  • Pediatric Traumatic Brain Injury
  • Cognitive Rehabilitation

Background:

  • Traumatic brain injury (TBI) in children can lead to persistent cognitive deficits.
  • Understanding specific learning and memory impairments, such as proactive interference (PI), is crucial for effective rehabilitation.
  • Previous research has explored PI in adults, but pediatric TBI data is less established.

Purpose of the Study:

  • To investigate the prevalence and characteristics of proactive interference (PI) in children with traumatic brain injury (TBI).
  • To examine the relationship between anterior cerebral lesions, PI, and overall cognitive performance.
  • To identify the role of processing speed in mediating the impact of pediatric TBI on verbal learning.

Main Methods:

  • One hundred sixty-seven children with TBI completed the California Verbal Learning Test-Children's Version (CVLT-C) and Wechsler Intelligence Scale for Children-Third Edition (WISC-III) within one year post-injury.
  • Proactive interference (PI) was defined as a significant performance drop on a second learning list compared to the first.
  • Statistical comparisons were made between the TBI sample and the CVLT-C standardization sample, with analyses considering lesion location and processing speed.

Main Results:

  • A large proactive interference (PI) effect was significantly more common in children with TBI (21%) compared to the standardization sample (11%).
  • Anterior cerebral lesions were associated with a lower likelihood of large PI effects but poorer initial learning performance.
  • Processing speed, as measured by the WISC-III, significantly mediated the effects of pediatric TBI on various CVLT-C learning variables.

Conclusions:

  • Failure to release from proactive interference (PI) is a notable, though not universal, issue for children following TBI.
  • Unlike in adults, anterior cerebral lesions in children with TBI do not selectively increase PI risk but may impair cognitive resource allocation.
  • Deficits in information processing speed appear to be a primary driver of verbal learning impairments observed after pediatric TBI.

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