A great deal of thought goes into the design of many tactile graphics.
In contrast little attention is given to the skills and knowledge which users
must possess to interpret the graphics and it is this which is the focus of
our research. In this paper
we describe a conceptual framework (or 'model') we are currently developing
to describe how blind schoolchildren comprehend tactile graphics. Our model
suggests that four factors are involved - perceptual processing, cognitive skills,
knowledge and cognitive development We will briefly outline each in turn and
highlight some of the issues for discussion emerging from our work.
(A workshop later will
provide an opportunity for more in-depth discussion.)
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