ual's responses to sensory stimuli in a scaling task. Of course, experimental studies of factors affecting each of these aspects of individual performance will be necessary to clarify their relationship to each other.
Finally, with regard to taste perception per se, the present observations suggest that the individual's perception of responses to bitter tastes may bear relatively little relationship to how he or she perceives/responds to other taste compounds. Moreover, individual responses to bitter appear to be relatively unreliable. The bases for these distinctive reactions to bitter are unclear, but their existence complicates the use of bitter responses in the clinical diagnosis of taste abnormality.
This work was funded by the National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Public Health Service Grant #5 P50 DC00214. The author gratefully acknowledges the technical assistance of Betsy Garrison and Lisa Pitcherella.
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