The main objective of this book is to explain the thinking that is involved in working out a systematic scheme of the variables related to dyslexia. The contents of the book include "Origins of the Approach,""Some Principles of Instruction"; "Verbal Behavior"; "Our Ideas about Language"; "Left and Right"; "The Biology of the Book"; "Exploring Space," which considers the importance of visualizing non-Euclidean geometrical space in learning to read; "Space and Language"; "The Mapping of Experience"; "Geometry of Behavior"; "The Grammar of the Glove," which presents a model of English grammar that will help educators understand some of the reading difficulties experienced by children; "The Body in the Box," which examines the importance of spatial relations and the ability to perceive spatial situations while reading; "Flexible Geometry"; "The Variables of Experience"; "Notes for Teachers and Parents"; "Spacing the ABC," which stresses the importance of developing space-time perceptions in young children who are learning to read; "The Control of Perception"; "A psychophysical Approach to Dyslexia"; "Identity and Importance"; and "Approach to the Brain." (RB)