An assessment of the effectiveness of tactile presentations as substitutes for pictures

The vital role played by pictures and diagrams in modern communication is stated with the need for adequate substitutes so that visually impaired people can take full advantage of educational and career opportunities. The multiplicity of purposes to which pictures and diagrams can be put and the diversity of styles which result are discussed. Available methods for producing tactile versions of these (some devised and improved by the author) are described and provisionally evaluated. [Continues.]