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Categorical perception of morphed objects using a free-naming experiment

Hartendorp, Mijke O.; Van der Stigchel, Stefan; Burnett, Hollie G.; Jellema, Tjeerd; Eilers, Paul H.C.; Postma, Albert

Authors

Mijke O. Hartendorp

Stefan Van der Stigchel

Hollie G. Burnett

Paul H.C. Eilers

Albert Postma



Abstract

Morphed figures entail a dominant and nondominant interpretation. Testing perception of morphed objects using forced-choice methods demonstrates that morphed figures are perceived as their dominant interpretation ("categorical perception", or CP). Using a more natural free-naming response could reveal whether CP is an effect independent of method. In Experiment 1, therefore, series of morphed figures were tested for CP using free naming. Half of the morph series were identified as CP patterns. In Experiment 2, we used forced choice to investigate CP, resulting in an increase of number of CP series compared to free naming. The overlap between CP series of Experiments 1 and 2 was small, however. Experiment 3 revealed that higher perceptual similarity between the extremes of the series was strongly related to CP for the free-naming method, in contrast to the forced-choice method. We conclude that the observation of CP depends on the intactness of the intrinsic object structure caused by the morphing procedure.

Journal Article Type Article
Publication Date Oct 15, 2010
Journal VISUAL COGNITION
Print ISSN 1350-6285
Electronic ISSN 1464-0716
Publisher Taylor & Francis
Peer Reviewed Peer Reviewed
Volume 18
Issue 9
Article Number PII 924179568
Pages 1320-1347
APA6 Citation Hartendorp, M. O., Van der Stigchel, S., Burnett, H. G., Jellema, T., Eilers, P. H., & Postma, A. (2010). Categorical perception of morphed objects using a free-naming experiment. Visual Cognition, 18(9), (1320-1347). doi:10.1080/13506285.2010.482774. ISSN 1350-6285
DOI https://doi.org/10.1080/13506285.2010.482774
Keywords Object categorization; Categorical perception; Free naming
Publisher URL https://www.tandfonline.com/doi/abs/10.1080/13506285.2010.482774