Psychological Research

, Volume 78, Issue 1, pp 136–140 | Cite as

Subjective criteria and illusions in visual testing: some methodological limitations

Original Article

Abstract

It is argued that illusions cannot generally be investigated with criterion-independent methods. This limits the value of the data obtained from them. This is particularly important when the results are compared between groups of subjects, for example, between dyslexic readers and controls, since it is possible that the differences between the groups reflect differences with regard to criteria rather than real perceptual differences.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.OsloNorway
  2. 2.Centre for Mathematics and Physics in the Life Sciences and Experimental Biology (CoMPLEX)University College LondonLondonUK

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