Comparison of Odor Thresholds obtained by a Three Alternative Choice Procedure and by the Method of Limits

Publikation: Beiträge in SammelwerkenAufsätze in KonferenzbändenForschung


50 healty normosmic students obtained odor thresholds for butanol using the Sniffin` Sticks test (SnS), as well as the method of limits (ML) in ascending and descending order. The procedures were repeated about 2 weeks later. For each session and method the performance time was taken and subjects rated the pleasantness of the odor and the strain required by the task using a category anchored Visual Analogue Scale. For all subjects plausible thresholds
could be obtained by the SnS procedure and by the ascending ML. For 22 out of 50 subjects, however, thresholds could not be obtained by the descending ML. Further analysis of the data revealed worse performance and significantly lower retest-reliabilities for those subjects in the ascending ML and the SnS-procedure as well.
TitelFechner Day 2009 : Proceedings of the 25th Annual Meeting of the International Society for Psychophysics
HerausgeberM. A. Elliott, S. Antonijevic´, S. Berthaud, P. Mulcahy, B. Bargary, C. Martyn, H. Schmidt
Anzahl der Seiten4
ErscheinungsortGalway (Irland)
VerlagInternational Society for Psychophysics
PublikationsstatusErschienen - 2009
VeranstaltungAnnual Meeting of the International Society for Psychophysics - FD 2009: Fechner Day - Galway, Irland
Dauer: 21.10.200924.10.2009
Konferenznummer: 25