Chem. Senses 28: 799-805,
2003
© Oxford University Press 2003
Influences of Age and Sex on a Microencapsulated Odor Memory Test
Smell and Taste Center, Department of Otorhinolaryngology: Head and Neck Surgery, Department of Psychiatry, and School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
Correspondence to be sent to: Richard L. Doty, Ph.D., Director, Smell and Taste Center, University of Pennsylvania Medical Center, 5 Ravdin Building, 3400 Spruce Street, Philadelphia, PA 19104, USA. e-mail: doty{at}mail.med.upenn.edu
While the influences of such variables as age and sex are well established for most standardized tests of odor identification and detection, this is not the case for tests of odor memory. In this study, 231 non-smoking men and women, ranging in age from 10 to 68 years, were administered a standardized 12-item match-to-sample microencapsulated odor memory test (OMT). Anosmics were excluded from the study. Each participant was asked to smell a target odorant after its release from a microencapsulated odorant pad and then, after a delay interval of 10, 30 or 60 s, to pick the target from a similarly presented set of four odors, three of which were foils. Backward counting by threes was required during the delay intervals in an effort to minimize semantic rehearsal. Overall OMT scores were higher for women than for men, and decreased, in each sex, as a function of age in a manner similar to the age-related decline observed in tests of odor identification and detection. Performance did not change as a function of delay interval. A significant correlation between the overall OMT test scores and scores on the University of Pennsylvania Smell Identification Test was observed for women, but not for men, in accord with the notion that women may be more likely to employ semantic cues in their strategies to remember odors. The findings are discussed in light of the complexities of the construct of odor memory.
Key words: age, memory, olfaction, sex, smell identification, smoking
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