Abstract
Various counting tasks were presented to congenitally, totally blind children between the ages of three and thirteen in order to determine the behaviors they employ to ensure accurate counting. Examination of their counting behaviors revealed three dimensions of tactile strategies, each serving a specific function within the counting process. These functions include “scanning” arrays to gather information about the configuration and characteristics of objects, “organizing” the counting process based on the arrangement of objects, and “partitioning” objects already counted from those still to be counted. A developmental progression in the ontogenesis of each of these dimensions of strategic behavior was identified through an analysis of the subjects’ counting behaviors.
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