Document Detail

The labeled dissimilarity scale: a metric of perceptual dissimilarity.
MedLine Citation:
PMID:  10703263     Owner:  NLM     Status:  MEDLINE    
Fundamental to the concept of psychological distance is the idea that confusability allows discovery of the perceptual relationships between objects, which provides understanding of the underlying principles that govern the functioning of a system. Thus, judgments of dissimilarity (conceptually proportional to the inverse of confusability) may provide insight into the elusive underlying quality-coding mechanisms in that sensory system. In the present experiments, a labeled dissimilarity scale (LDS) that reflects the magnitude of odorant dissimilarity was developed in a fashion similar to that reported by Green (Green, Shaffer, & Gilmore, 1993). This scale was produced by rating the perceptual intensity implied by adverbs describing different levels of dissimilarity, and then attaching those descriptors to appropriate locations on a numerical scale. The usefulness of the scale was demonstrated by its ability to produce visual color space with ratings of dissimilarity of Munsell color chips. The stability and reliability of the LDS was evaluated by comparing it with the traditional scaling technique of magnitude estimation (ME). It was found that the scales produced similar ratings of odorant dissimilarity and showed a similar susceptibility to the effects of contrast convergence. However, the coefficients of variation of dissimilarities rated with ME were much higher than those produced with the LDS. The subjects also dealt with the LDS without the anxiety that usually accompanies first-time users of ME. The LDS provided stable ratings of odorant dissimilarity and preserved the inferred ratio scale properties of ME.
D B Kurtz; T L White; M Hayes
Related Documents :
19093613 - Effects of colored light and colors of comparison stimulus and their background on heav...
7900303 - Orientation and color processing for partially occluded objects.
532713 - Mechanical properties of mallard humeral bone in dependence on the form.
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Perception & psychophysics     Volume:  62     ISSN:  0031-5117     ISO Abbreviation:  Percept Psychophys     Publication Date:  2000 Jan 
Date Detail:
Created Date:  2000-03-23     Completed Date:  2000-03-23     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0200445     Medline TA:  Percept Psychophys     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  152-61     Citation Subset:  IM    
SUNY Health Science Center, Syracuse, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Judgment / physiology*
Middle Aged
Perception / physiology*
Pilot Projects
Sensation / physiology
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Constrained scaling: the effect of learned psychophysical scales on idiosyncratic response bias.
Next Document:  Concavities as basic features in visual search: evidence from search asymmetries.