Transformation and alignment in similarity. / Hodgetts, Carl J; Hahn, Ulrike; Chater, Nick.

In: Cognition, Vol. 113, No. 1, 10.2009, p. 62-79.

Research output: Contribution to journalArticlepeer-review

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Abstract

This paper contrasts two structural accounts of psychological similarity: structural alignment (SA) and Representational Distortion (RD). SA proposes that similarity is determined by how readily the structures of two objects can be brought into alignment; RD measures similarity by the complexity of the transformation that "distorts" one representation into the other. We assess RD by defining a simple coding scheme of psychological transformations for the experimental materials. In two experiments, this "concrete" version of RD provides compelling fits of the data and compares favourably with SA. Finally, stepping back from particular models, we argue that perceptual theory suggests that transformations and alignment processes should generally be viewed as complementary, in contrast to the current distinction in the literature.

Original languageEnglish
Pages (from-to)62-79
Number of pages18
JournalCognition
Volume113
Issue number1
Early online date31 Aug 2009
DOIs
Publication statusPublished - Oct 2009
This open access research output is licenced under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

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