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ERIC Number: EJ777465
Record Type: Journal
Publication Date: 2007-Oct
Pages: 18
Abstractor: Author
Reference Count: 0
ISSN: ISSN-0096-1523
Overestimation of the Projected Size of Objects on the Surface of Mirrors and Windows
Lawson, Rebecca; Bertamini, Marco; Liu, Dan
Journal of Experimental Psychology: Human Perception and Performance, v33 n5 p1027-1044 Oct 2007
Four experiments investigated judgments of the size of projections of objects on the glass surface of mirrors and windows. The authors tested different ways of explaining the task to overcome the difficulty that people had in understanding what the projection was, and they varied the distance of the observer and the object to the mirror or window and varied the size of the mirror. The authors compared estimations of projected size with estimations of the physical size of the object that produced the projection. For both mirrors and windows, observers accurately judged the physical size of objects but greatly overestimated the projected size of the same objects. Indeed, judgments of projected size were more similar to physical than to projected size. People were also questioned verbally about their knowledge of projected size relative to physical size. The errors produced for these conceptual questions were similar to those found in the perceptual estimation tasks. Together, these results suggest that projections of objects on mirrors and windows are treated in the same way and that observers cannot perceive such projections as distal objects.
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A