Abstract
7 girls and 5 boys, ranging in age from 7 to 12 years, participated in the pilot testing of a mental rotation task developed for use in a comprehensive test battery of visuoperceptual abilities. Two asymmetric, three-dimensional objects were constructed from wood strips such that one object was the mirror-image of the other. Black and white photographs were taken of these objects in various spatial orientations along a horizontal plane. 16 photographs depicted the object right-side-up and in 16 the object was upside-down (rotated 180 degrees in the vertical plane). These photographs were presented to the children who were asked to match each with the corresponding object. Analysis indicated correct judgements of the right-side-up images occurred more frequently than the upside-down images (t11 = 4.73, p < .001). Using these data, adjustments were made to the task instructions to provide greater clarity for the young participants.
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