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Foreshortening affects both uphill and downhill slope perception at far distances

Published online by Cambridge University Press:  08 October 2013

Helen E. Ross
Helen E. Ross*
Affiliation:
Department of Psychology, University of Stirling, Stirling FK9 4LA, Scotland, United Kingdom. [email protected]/staff/staff-profiles/honorary-staff/helen-ross
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Abstract

Perceived slope varies with the viewing distance, and is consistent with the effects of foreshortening. Distant viewing makes uphill slopes appear steeper and downhill slopes flatter than does near viewing. These effects are obvious to skiers and climbers in mountainous country. They have also been measured in outdoor experiments with controlled viewing distances. There are many other sources of slope illusions.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 36 , Issue 5 , October 2013 , pp. 563 - 564
Copyright
Copyright © Cambridge University Press 2013 

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