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Chem. Senses 24: 697-700, 1999
© Oxford University Press 1999

What a Tangled Web We Weave: Discriminating between Malingering and Anosmia

Daniel B. Kurtz1, Theresa L. White1, David E. Hornung1,2 and Elizabeth Belknap1

1 Clinical Olfactory Research Center, Department of Neuroscience and Physiology, SUNY Health Science Center, 750 E. Adams St, Syracuse, NY 13210 2 St Lawrence University, Department of Biology, Canton, NY 13617, USA

Correspondence to be sent to: Daniel B. Kurtz, SUNY Health Science Center, Room 3232 Weiskotten Hall, 766 Irving Ave., Syracuse, NY 13210, USA. e-mail:kurtzd{at}vax.cs.hscyr.edu

Two groups of normosmic subjects were instructed to feign a total olfactory loss when tested with the Olfactory Confusion Matrix (OCM). One of the groups was given specific instructions as to the number of odorants and trials in the test, as well as the number of items that might be expected to be correctly identified by chance. The responses of both groups of malingerers were compared with responses gathered from a group of anosmic patients. The groups did not differ in terms of performance level (percent correct). In spite of the similarity in terms of accuracy level, an analysis of the pattern of OCM responses to an irritant allowed the anosmic patients to be distinguished from subjects attempting to feign a loss. Subjects were given explicit details about the test performed at the same level as those simply told to feign a loss. These results suggest that the OCM is an effective tool in separating malingering from anosmia.


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