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Abstract
The purpose of the study was to examine the relationship between the Luria-Nebraska Neuropsychological Battery-Third Edition (LNNB-III) and the Wechsler Adult Intelligence Scale-Third Edition (WAIS-III). Participants were 85 adults referred for neuropsychological evaluation. The mean age of participants was 38.73 years (SD = 16.54) and average education was 13.07 years (SD = 2.60). The sample was predominantly female (52.9%), right-handed (86.3%), and Caucasian (68.6%), with the remainder of the population classified as Hispanic (13.7%), African-American (5.9%), or other (11.8%). Diagnoses included 26% psychiatric disorders, 64% neurological disorders, and 10% with no diagnosis-Pearson product correlation yielded a number of significant relationships between the WAIS-III IQ scores and the LNNB-III scales. The highest correlations were with the LNNB Intelligence, Visual-Spatial, Complex Auditory, and Arithmetic scales. Additionally, significant correlations were found between the WAIS-III subtests and a moderate proportion of the LNNB-III subtests. Correlations were also reported for the new WAIS-III scales, Letter-Number Sequencing and Matrix Reasoning. The results suggest that similar abilities are being assessed on both tests. These findings allow clinicians to not only evaluate the consistency of performance across this testing battery, but provide a useful screening instrument for intelligence.