The Repeatable Battery for the Assessment of Neuropsychological Status as a Screening Test in Schizophrenia, II: Convergent/discriminant validity and diagnostic group comparisons

Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland at Baltimore, 21228, USA.
American Journal of Psychiatry (Impact Factor: 12.3). 01/2000; 156(12):1951-7.
Source: PubMed


In a companion article in this issue of the Journal, the authors presented data suggesting that the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) is sensitive to the types of impairments observed in schizophrenia, correlates highly with standard measures of intelligence and memory, and is related to employment status in a group of patients with schizophrenia drawn from a tertiary care research center. The objectives of the current study were 1) to determine if evidence of the convergent validity of the RBANS could be replicated in a diagnostically heterogeneous sample drawn from a public mental health system, 2) to examine the relationship of the RBANS to a broad neuropsychological battery, and 3) to compare the performance of patients with schizophrenia and patients with bipolar disorder on a neuropsychological battery and the RBANS.
The RBANS and a standard neuropsychological battery, including the WAIS-III and Wechsler Memory Scale, 3rd ed. (WMS-III), were given to 150 patients drawn from a larger study of vocational rehabilitation.
Correlations of RBANS total scores with WAIS-III and WMS-III variables were highly similar across study groups. The RBANS correlated highly with a composite z score derived from 22 standard measures of IQ, memory, language, motor, attention, and executive function. Principal component analyses of the neuropsychological battery resulted in a six-factor solution: the RBANS correlated most highly with a general ability factor and had limited correlations with measures of motor performance, vigilance, and executive function. Patients with schizophrenia demonstrated greater deficits on the neuropsychological battery and the RBANS than patients with bipolar disorder.
These data suggest that the RBANS is a useful screening instrument for assessing the severity of cognitive impairment in psychiatric populations.

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    • "The present analyses focus on verbal episodic memory, visuospatial episodic memory, and working memory: tests within the Repeatable Battery for the Assessment of Neuropsychological Status [Hobart et al., 1999] were used to assess verbal episodic memory ('list recall') and visuospatial episodic memory ('figure recall'). The Letter Number Sequence (LNS) test was used to assess verbal working memory performance. "
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    • "Several computerized batteries have been applied to schizophrenia samples, such as the Cambridge Neuropsychological Test Automated Battery (CANTAB) (Robbins et al., 1996), the CDR Cognitive Assessment System (Hunter et al., 1997), and the CogTest Battery (Cogtest, 2002).Another option is the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) (Wilk et al., 2004; Gold et al., 1999). The RBANS is capable of providing reliable and valid assessments of patients with schizophrenia for a wide variety of cognitive functions (Gold et al., 1999; Hobart et al., 1999; Wilk et al., 2002) even though it was originally developed as a screening measure for elderly subjects and therefore, favours the evaluation of cognitive domains in more severely impaired patients, and leaves out important measures such as motor, executive and working memory tasks , which are important targets for cognitive enhancement in schizophrenia. "
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    • "In contrast to tests of smooth pursuit or antisaccades, CI is routinely measured in clinical exams. Several studies suggest CI is present in individuals with SZ (Flach et al., 1992; Hobart et al., 1999; Chan et al., 2009). However, these reports were based on subjective judgments of CI. "
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