WAIS-IV short form applied to a mixed neurological Swedish clinical sample

The Wechsler Adult Intelligence Scale, fourth version (WAIS-IV), is a frequently used instrument for neuropsychological assessment. The aim was to assess the degree of conformity between the Scandinavian adaptation of the WAIS-IV and a short form of this scale (SF) in a mixed sample of neurological...

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Bibliographic Details
Published in:Nordic psychology 2022, Vol.74 (2), p.114-124
Main Authors: Lindau, Maria, Lundberg, Milena, Najström, Mats
Format: Article
Language:English
Subjects:
Arithmetic
Brain cancer
Brain damage
Brain tumors
clinical applicability
Conformity
Congruence
cultural adaptation
Discrepancies
Generalizability
Intelligence
Intelligence tests
Multiple sclerosis
Neuropsychological assessment
Psychology
psykologi
short form
Traumatic brain injury
Tumors
WAIS-IV
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Summary:The Wechsler Adult Intelligence Scale, fourth version (WAIS-IV), is a frequently used instrument for neuropsychological assessment. The aim was to assess the degree of conformity between the Scandinavian adaptation of the WAIS-IV and a short form of this scale (SF) in a mixed sample of neurological diagnoses. The SF comprised Block Design, Similarities, Digit Span, Arithmetic, Information, Digit Symbol (in the WAIS-IV named Coding), and Picture Completion, the latter here replaced by Matrix Reasoning. The sample consisted of 150 patients and included multiple sclerosis (n = 27), brain tumor (n = 15), traumatic brain injury (n = 60) and vascular brain damage (n = 48). There was a lack of congruence between the WAIS-IV and the SF in the entire sample, revealing selectively significantly higher scores for the SF on Full Scale IQ (FSIQ) and Processing Speed Index (PSI). On a diagnostic group level, the discrepancies were as follows: in the traumatic brain injury group on FSIQ, Verbal Comprehension Index (VCI) and PSI, in the vascular damage group the FSIQ was significantly higher on SF compared to the WAIS-IV. Since the results revealed several mismatches between the SF and the WAIS-IV, except for the MS and traumatic brain tumor group, there is a lack of interchangeability between these two sets of tests. Thus, generally the SF cannot be recommended as a substitute for the WAIS-IV in this type of mixed Swedish neurological sample. The small sample sizes make the generalizability of this study limited.
ISSN:1901-2276
1904-0016
1904-0016
DOI:10.1080/19012276.2021.1918225