Test-Retest Reliability of the Clinical, Factor, and Localization Scales of the Luria-Nebraska Neuropsychological Battery

Abstract

Comparisons were made between initial test scores of the Luria-Nebraska Neuropsychological Battery, the Factor scales and the Localization scales, and a second set of scores derived from a readministration of the battery. Thirty random, unscreened, psychiatric inpatients with a wide cariety of diagnoses served as subjects. Patient condition was not controlled, and no subjects were dropped from the dats pool. Sixteen males and 14 females with a mean age of 31.8 years (SD = 12.7), mean education of 9.3 years (SD = 3.2), and a test-retest interval mean of 8.1 months (SD = 6.0) participated. All patients had significant emotional difficulties which resulted in repeated hospitalization, and all were cooperative with test procedures. Test-retest scores for the 14 Luria scales ranged from. 83 to. 96, averaging. 89 and for the eight Localization scales, and the reliability ranged from a low of. 78 to a high of. 95, with a mean of. 89. The factor scales test-retest reliability coefficients ranged from. 01 to. 96, with a. 75 average for the 30 scales. All the correlations, except two on the Factor Scales, were significant at p <. 001. These results support the findings of an earlier study which focused on the 14 Luria scaled scores only. The data suggest that the Luria Battery is reliable over time.