Visual mental rotation of possible and impossible objects

Dror, Itiel E., Ivey, Chandra and Rogus, Courtney (1997) Visual mental rotation of possible and impossible objects. Psychonomic Bulletin & Review, 4 (2), 242-247.

Abstract

Participants were tested on two visual mental rotation tasks using three-dimensional “possible? and “impossible? shapes. Both types of stimuli can be easily encoded by their parts and how they are spatially organized. However, while possible shapes can also be easily encoded as a global image, it is more difficult to encode impossible shapes in such a way. Participants visually rotated both types of stimuli at comparable rates, reflecting that local representations were used in the process of visual mental rotation.

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