Wechsler Adult Intelligence Scale/Wechsler Memory Scale Difference Scores

130 Pages·2017·4.75 MB·English

by  Don A. Boyd

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Dissertations Graduate College
8-1984
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Don A. Boyd
Western Michigan University
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Boyd, Don A., "Wechsler Adult Intelligence Scale/Wechsler Memory Scale Difference Scores: Their
Relationship to Brain Dysfunction and Closed Head Injury" (1984). Dissertations. 2387.
https://scholarworks.wmich.edu/dissertations/2387
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WECHSLER ADULT INTELLIGENCE SCALE/WECHSLER MEMORY SCALE
DIFFERENCE SCORES: THEIR RELATIONSHIP TO BRAIN
DYSFUNCTION AND CLOSED HEAD INJURY
by
Don A. Boyd
A Dissertation
Submitted to the
Faculty of The Graduate College
in partial fulfillment of the
requirements for the
Degree of Doctor of Education
Department of Counseling and Personnel
Western Michigan University
Kalamazoo, Michigan
August 1984
Reproduced with permission of the copyright owner. Further reproduction prohibited without permission.
WECHSLER ADULT INTELLIGENCE SCALE/WECHSLER MEMORY SCALE
DIFFERENCE SCORES: THEIR RELATIONSHIP TO BRAIN
DYSFUNCTION AND CLOSED HEAD INJURY
Don A. Boyd, Ed.D.
Western Michigan University, 1984
Performance differences between the Wechlser Adult Intelligence
Scale (WAIS) and the Wechsler Memory Scale (WMS) were studied. Dif­
ferences in performance between the WAIS Full Scale IQ Score and the
WMS Memory Quotient (WMS discrepancy score) were compared across
three groups consisting of a closed head injury group (N = 45), a
localized lesion group (N^ = 25), and a psychiatric group (N = 45)
who were unimpaired on the Halstead-Reitan Neuropsychological Bat­
tery. Also, WMS discrepancy scores were compared across a long-coma
group and a short-coma group and the correlation coefficient between
the WMS discrepancy score and neuropsychological impairment rating
was obtained.
The WMS discrepancy score was hypothesized to be a marker of
diffuse closed head injury; and it was predicted that WMS discrep­
ancy scores would be greater in the closed head injury group, that
the long-coma patients would show greater WMS discrepancy scores
than a short-coma group, and that WMS discrepancy scores would be
related to severity as defined by impairment on the Halstead-Reitan
Neuropsychological Battery. Results confirmed the expected differ­
ences between groups. The closed head injury group was significantly
different from both the localized lesion group and the unimpaired
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psychiatric group on the dimension of WMS discrepancy score. The
long-coma group had significantly larger WMS discrepancy scores.
The correlation between WMS discrepancy score and neuropsychological
impairment rating was only weakly supported. The closed head injury
group showed greater WMS discrepancy scores despite the fact that
they showed the lowest WAIS scores. Results were interpreted as
being supportive of the idea that the WMS discrepancy score may be a
marker of diffuse closed head injury.
Implications for the use of the WMS discrepancy score and
neuropsychological ratings were discussed. The WMS discrepancy
score may be more descriptive of severity in closed head injury than
neuropsychological impairment ratings. Despite weaknesses in the
use of the WMS as a comprehensive test of memory, it may be of clini­
cal value when used with other tests to highlight specific diffi­
culties in the area of fluid verbal skills or information processing.
The systematic inclusion of the WMS discrepancy score in the evalua­
tion of closed head injuries seems warranted. Recommendations for
further research were offered.
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8425228
Boyd, Don Allen
WECHSLER ADULT INTELLIGENCE SCALE/WECHSLER MEMORY SCALE
DIFFERENCE SCORES: THEIR RELATIONSHIP TO BRAIN DYSFUNCTION
AND CLOSED HEAD INJURY
Western Michigan University Ed.D. 1984
University
Microfilms
International
300 N. Zeeb Road, Ann Arbor, Ml 48106
Copyright 1984
by
Boyd, Don Allen
All Rights Reserved
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Reproduced with permission of the copyright owner. Further reproduction prohibited without permission.
Copyright by
Don A. Boyd
1984
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ACKNOWLEDGMENTS
I would like to acknowledge the support and effort of my
chairman, Dr. Robert Hopkins, in helping complete this important
but urgent project. Also I wish to thank Dr. Uldis Smidchens and
Dr. Malcolm Robertson for giving time when it was most difficult.
I wish to express appreciation to Dr. Richard Gay, friend and
mentor, who was most helpful in providing direction and creating a
clinical foundation.
I want to thank my parents, Francis and Alice Boyd, for their
lifelong ability to understand the importance of things that are
fun and interesting.
I wish to thank Becky, Joe, and Karen, who are still too young
to understand how much more meaning they give to the completion of
this project.
Thanks to my extraordinary wife, Deborah Jo. Her talent,
effort, and love were essential to the completion of the disserta­
tion. Her character has contributed much to the happiness of
others around her.
Don A. Boyd
ii
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