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Multipart Geon Objects

(.zip archive) This image set contains 10 objects composed of 5 parts per an object. Each object has a different central Geon and 4 parts are attached around it. Objects were modeled after those in Biederman and Gerhardstein's (1993) JEP:HPP article. The set includes rotations in depth around the vertical axis of 0, 30, 45, 60, 90, 120, 150, and 180 deg (as well as a few misc rotations). One nice property of these objects is that the 0 to 45 deg rotations show the same visible parts, but the 45 to 90 deg rotations show different visible parts. This allows a comparison between equal magnitude rotations with differing degrees of qualitative change. See Hayward's (1998) JEP:HPP article for an experiment using these objects and more on this topic.

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