Leiter International Performance Scale, Third Edition
The Leiter International Performance Scale – Third Edition (Leiter-3) (Roid et al. 2013) is a widely used measure of nonverbal intellectual functioning that consists of both perceptual and conceptual tasks designed to measure aspects of attention, cognition, and memory. It is administered without vocal instructions and does not require verbal responses, although examinees may employ verbal mediation on some items.
The Leiter-3 has two primary domains, a Cognitive battery made up of five subtests assessing nonverbal intellectual functioning and an Attention and Memory battery comprising five subtests. The latter battery is intended to aid in neuropsychological assessment and differential diagnosis for individuals suspected of attentional difficulties, learning disorder, or who have experienced a traumatic brain injury. For individuals with severe cognitive impairments, the measure also allows for the calculation of a Growth Score to compare results and...
References and Readings
- McGrew, K. S., & Flanagan, D. P. (1998). The intelligence test desk reference (ITDR):Cf-Gc cross battery assessment. Boston: Allyn & Bacon.Google Scholar
- Roid, G. H., Miller, L. J., Pomplun, M., & Koch, C. (2013). Leiter international performance scale-third edition. Wood Dale: Stoelting Company.Google Scholar
- Tsatsanis, K. D., Dartnall, N., Cicchetti, D., Sparrow, S. S., Klin, A., & Volkmar, F. R. (2003). Concurrent validity and classification accuracy of the Leiter and Leiter-R in low-functioning children with autism. Journal of Autism and Developmental Disorders, 33(1), 23–30.PubMedCrossRefGoogle Scholar