Empirical evaluation of the uncanny valley hypothesis fails to confirm the predicted effect of motion

Lukasz Piwek, Lawrie S. Mckay, Frank E. Pollick

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

The uncanny valley hypothesis states that the acceptability of an artificial character will not increase linearly in relation to its likeness to human form. Instead, after an initial rise in acceptability there will be a pronounced decrease when the character is similar, but not identical to human form (Mori, 1970/2012). Moreover, it has been claimed but never directly tested that movement would accentuate this dip and make moving characters less acceptable. We used a number of full-body animated computer characters along with a parametrically defined motion set to examine the effect of motion quality on the uncanny valley. We found that improving the motion quality systematically improved the acceptability of the characters. In particular, the character classified in the deepest location of the uncanny valley became more acceptable when it was animated. Our results showed that although an uncanny valley was found for static characters, the deepening of the valley with motion, originally predicted by Mori (1970/2012), was not obtained.
Original languageEnglish
Pages (from-to)271-277
JournalCognition
Volume130
Issue number3
DOIs
Publication statusPublished - 1 Mar 2014

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