Cognitive performance in TBI children: : examining the relationship between lesion volume and psychometric testing results

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dc.contributor.advisor Bowman, Sharon L., 1960- en_US
dc.contributor.author Nixon, Jodi L. en_US
dc.date.accessioned 2011-06-03T19:29:33Z
dc.date.available 2011-06-03T19:29:33Z
dc.date.created 2001 en_US
dc.date.issued 2001
dc.identifier LD2489.Z68 2001 .N59 en_US
dc.identifier.uri http://cardinalscholar.bsu.edu/handle/handle/179142
dc.description.abstract The relationship between lesion volume in children with traumatic brain injury (TBI) and IQ scores was investigated in this study. Participants included eight children between the ages of 8-12 years with primarily right hemisphere TBIs and 16 normals who were matched based on age and gender. Archival data employing the Wechsler Intelligence Scale for Children - III (WISC-III) scores was the source of Verbal IQ (VIQ), Performance IQ (PIQ), and Full Scale IQ (FSIQ) scores. Severity of injury was determined using the Glasgow Coma Scale (GCS) which was contained in the same archival database. Lesion volume was determined utilizing National Institute of Health (NIH) Image (Version 1.76) and magnetic resonance imaging scans of the injured children. The area of the lesion was outlined, using the freehand line tool, on successive slices, summed, and multiplied by the corresponding acquisition slice gap to obtain a measure of total volume. Results indicated that lesion volume does not explain a significant portion of the variance associated with TBI. Severely injured children had lower IQs than children with mild or no injury. Additionally, children with right hemisphere injuries had significantly lower VIQ, PIQ, and FSIQ scores than normals. Qualitative analyses revealed that lesion volume appears to be related to the change in IQ scores during recovery. Typically, children with larger lesions (e.g., more severe injury) had greater functional losses and had greater gains to make; therefore, they demonstrated greater changes in IQ score as compared to less severely injured children. Predicting the area of deficit based upon lesion location yielded results congruent with chance. Results appear to reinforce the complexity of TBI; no single piece of data explains a significant portion of the variance associated with this phenomenon. Future research should strive toExamine and control for the numerous factors associated with TBI (e.g., age, lesion location, lesion volume, premorbid abilities, parental education, GCS score, gender, use of standard test battery, and many others) within a single study. Efforts to provide optimal treatment and recovery of TBI patients could be informed by such research. en_US
dc.description.sponsorship Department of Counseling Psychology and Guidance Services
dc.format.extent ix, 79 leaves : charts ; 28 cm. en_US
dc.source Virtual Press en_US
dc.subject.lcsh Brain-damaged children. en_US
dc.subject.lcsh Brain-damaged children -- Intelligence testing. en_US
dc.subject.lcsh Pediatric neuropsychology. en_US
dc.subject.lcsh Brain -- Wounds and injuries. en_US
dc.subject.lcsh Psychometrics. en_US
dc.title Cognitive performance in TBI children: : examining the relationship between lesion volume and psychometric testing results en_US
dc.title.alternative Cognitive performance in traumatic brain injury children en_US
dc.description.degree Thesis (Ph. D.) en_US
dc.identifier.cardcat-url http://liblink.bsu.edu/catkey/1213152 en_US


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  • Doctoral Dissertations [3210]
    Doctoral dissertations submitted to the Graduate School by Ball State University doctoral candidates in partial fulfillment of degree requirements.

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