Effects of training on odor judges scoring intensity
- 3 March 2005
- journal article
- Published by Wiley in Oral Diseases
- Vol. 11 (s1), 40-44
- https://doi.org/10.1111/j.1601-0825.2005.01088.x
Abstract
This pilot study was intended to test whether a training protocol improved validity of odor judges (OJs), with or without experience, and whether odorant types differed in error proneness. The OJs (four experienced, two inexperienced) completed a 4-phase training protocol based on the American Society of Testing and Materials standards (ASTM): (i) introduction to sensory scales, n-butanol reference, sniffing techniques; (ii) pretraining measurements; 20 samples of varying intensities of four unpleasant and three pleasant odorants; (iii) exercises assessing quality, intensity, ranking, and matching; and (iv) post-training measurements. Subjects' intensity scores were analyzed as the absolute difference from the 'true' intensity (ASTM n-butanol standard) using repeated measures ANOVA. Training significantly (P = 0.02) reduced OJ errors. Experienced and novice judges did not differ in average errors (P = 0.99), or in improvement in error from pre- to post-training (P = 0.94). Improvement was consistent from pre- to post-training for all odorants except dimethylsulfide for which errors worsened (P = 0.01). Unpleasant and pleasant odorants differed (P = 0.006) in error. After removing water the effects of water control scores from the pleasant odorants, the difference was not significant (P = 0.26). The OJs improved in their ability to assess odor intensity irrespective of previous experience. Training is recommended for all OJs prior to research trials.Keywords
This publication has 16 references indexed in Scilit:
- Changes in Odor Sweetness Resulting from Implicit Learning of a Simultaneous Odor-Sweetness Association: An Example of Learned SynesthesiaLearning and Motivation, 1998
- The nature and duration of adaptation following long-term odor exposurePerception & Psychophysics, 1996
- Reproducibility and Sensitivity of Oral Malodor Measurements with a Portable Sulphide MonitorJournal of Dental Research, 1991
- Halitosis Measurement by an Industrial Sulphide MonitorThe Journal of Periodontology, 1991
- Experience facilitates olfactory quality discriminationPerception & Psychophysics, 1988
- Oral odors in early experimental gingivitisJournal of Periodontal Research, 1984
- Natural Sniffing Gives Optimum Odour Perception for HumansPerception, 1983
- Lability of Odor Pleasantness: Influence of Mere ExposurePerception, 1978
- The correlation between organoleptic mouth-odor ratings and levels of volatile sulfur compoundsOral Surgery, Oral Medicine, Oral Pathology, 1978
- Category judgment: A range-frequency model.Psychological Review, 1965