A review of research examines the relationship between visual perceptual skills and reading achievement using meta-analysis to integrate statistically the results from 161 studies. It was concluded that visual perceptual skills should be included in the complex of factors predictive of reading achievement. (Author)

Focusing primarily on learning disabled children, the article briefly reviews the literature related to perceptual skills required in reading acquisition and the validity of current perceptual measures to tap these task-related perceptual abilities, and proposes an informal task-related measure to overcome the drawbacks of more formal measures of…

Examines the assumption that the parvocellular system is suppressed by the magnocellular system during saccadic eye movements and that this visual deficit is associated with dyslexia. Evidence from six studies indicates the magnocellular system is suppressed during saccadic eye movements, disproving the magnocellular deficit theory of dyslexia.…

The article reviews three studies (EC 600 064-066) evaluating the effectiveness of using Irlen tinted lenses or overlays with reading-disabled persons. It is concluded that carefully designed and controlled studies do not currently lend support to the Irlen hypothesis. (DB)

The article reviews three studies (EC 600 064-066) evaluating the effectiveness of using Irlen tinted lenses with reading-disabled persons. The studies are individually critiqued, and recommendations are offered concerning the methodology of further research. Stressed is the need to determine whether a specific syndrome of scotopic sensitivity…

Two methodological problems often arising in dyslexia research are considered. The first problem concerns the validity of experimental measures and the related problem of interpreting null results. The second problem involves the effects of sampling from a disabled population if the disorder under investigation has multiple unknown origins.…