Abstract
Matching of three-dimensional shapes within and across vision and touch was studied in 8- and 11-yr.-old children while the task's memory-demand was varied by changing the number of stimuli contained in comparison arrays. All matching groups showed a gradual improvement with age and decrements with increasing memory-demand of the task were more pronounced in all conditions involving a haptic component. In addition, matching from touch to vision was more affected by low demand for memory on the task than other modality conditions but greater demands influenced all haptic conditions similarly. The results were attributed to deficits in haptic retention perhaps stemming from both poor gathering, transformation, and storage of tactual information.
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