Comparison of Odor Thresholds obtained by a Three Alternative Choice Procedure and by the Method of Limits
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung
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Fechner Day 2009: Proceedings of the 25th Annual Meeting of the International Society for Psychophysics. Hrsg. / M. A. Elliott; S. Antonijevic´; S. Berthaud; P. Mulcahy; B. Bargary; C. Martyn; H. Schmidt. Galway (Irland): International Society for Psychophysics, 2009. S. 515-518.
Publikation: Beiträge in Sammelwerken › Aufsätze in Konferenzbänden › Forschung
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TY - CHAP
T1 - Comparison of Odor Thresholds obtained by a Three Alternative Choice Procedure and by the Method of Limits
AU - Müller, Friedrich
AU - Metz, Matthias
N1 - Conference code: 25
PY - 2009
Y1 - 2009
N2 - 50 healty normosmic students obtained odor thresholds for butanol using the Sniffin` Stickstest (SnS), as well as the method of limits (ML) in ascending and descending order. The procedureswere repeated about 2 weeks later. For each session and method the performancetime was taken and subjects rated the pleasantness of the odor and the strain required by thetask using a category anchored Visual Analogue Scale. For all subjects plausible thresholdscould 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 datarevealed worse performance and significantly lower retest-reliabilities for those subjects inthe ascending ML and the SnS-procedure as well.
AB - 50 healty normosmic students obtained odor thresholds for butanol using the Sniffin` Stickstest (SnS), as well as the method of limits (ML) in ascending and descending order. The procedureswere repeated about 2 weeks later. For each session and method the performancetime was taken and subjects rated the pleasantness of the odor and the strain required by thetask using a category anchored Visual Analogue Scale. For all subjects plausible thresholdscould 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 datarevealed worse performance and significantly lower retest-reliabilities for those subjects inthe ascending ML and the SnS-procedure as well.
KW - Business psychology
M3 - Article in conference proceedings
SP - 515
EP - 518
BT - Fechner Day 2009
A2 - Elliott, M. A.
A2 - Antonijevic´, S.
A2 - Berthaud, S.
A2 - Mulcahy, P.
A2 - Bargary, B.
A2 - Martyn, C.
A2 - Schmidt, H.
PB - International Society for Psychophysics
CY - Galway (Irland)
T2 - Annual Meeting of the International Society for Psychophysics - FD 2009
Y2 - 21 October 2009 through 24 October 2009
ER -