1983 volume 12(5) pages 589 – 591
doi:10.1068/p120589

Cite as:
Hammersley R, 1983, "Things are deeper than they are wide: a strange error of distance estimation" Perception 12(5) 589 – 591
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Things are deeper than they are wide: a strange error of distance estimation

Richard Hammersley

Received 31 January 1983, in revised form 20 April 1983

Abstract. An error of distance judgement is reported: subjects judge a length seen in depth to be greater than the same length seen in width. In depth-to-width comparisons they underestimate depth, and in width-to-depth comparisons they overestimate width. This is hard to explain in both inferential and realist theories of three-dimensional perception. Two plausible accounts of the error are proposed.

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