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Journal for Geometry and Graphics 08 (2004), No. 1, 117--126
Copyright Heldermann Verlag 2004

A Mental Cutting Test Using Drawings of Intersections

Emiko Tsutsumi
School of Social Information Studies, Otsuma Women's University, 2-7-1 Karakida-Tama, Tokyo 206-8540, Japan

In order to examine the role of information processing in recognizing 3D-objects using 2D-projection drawings, a standard paper-pencil MCT was administered to female students, who were instructed to draw intersecting lines on the projection chart of a test solid before selecting alternatives. As a result, it is quite possible that the ability to draw intersections itself is related to the score of the MCT, as well as to spatial ability. However, it did not seem possible to stimulate the sense of recognizing 3D-objects through the process of drawing intersections directly on to the test solids. Thus we concluded that most of the subjects who made low scores in the MCT, couldn't envision the space itself that contained three-dimensional objects when they observed projection drawings.

Keywords: Mental cutting test, intersection, spatial ability.

MSC: 51N05

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