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Science. 1971 Feb 19;171(3972):701-3.

Mental rotation of three-dimensional objects.

Abstract

The time required to recognize that two perspective drawings portray objects of the same three-dimensional shape is found to be (i) a linearly increasing function of the angular difference in the portrayed orientations of the two objects and (ii) no shorter for differences corresponding simply to a rigid rotation of one of the two-dimensional drawings in its own picture plane than for differences corresponding to a rotation of the three-dimensional object in depth.

PMID:
5540314
[PubMed - indexed for MEDLINE]
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