TY - GEN
T1 - Separating estimation process from response by using the sequential effect
AU - Kondo, Aki
AU - Watanabe, Katsumi
PY - 2011/10/18
Y1 - 2011/10/18
N2 - In psychophysical scaling, a subjective rating in the current trial is tend to be biased by preceding trials (sequential effect). Here, we investigated the factor determining the sequential effect: physical stimulus, evaluation process, or response in the preceding trials. Participants observed disks with different luminance values and rated the perceived brightness of the disk on a 9-point scale. When participants were required to evaluate and response to the 1-back trials, the current rating was assimilated toward 1-back trials. On the other hand, when participants were not required to evaluate the 1-back stimulus, the current rating was not affected by 1-back trials, independent of whether the response to the 1-back stimulus was required or not. These results suggest that the sequential effect was due to evaluation process but not to stimulus or response in the preceding trials.
AB - In psychophysical scaling, a subjective rating in the current trial is tend to be biased by preceding trials (sequential effect). Here, we investigated the factor determining the sequential effect: physical stimulus, evaluation process, or response in the preceding trials. Participants observed disks with different luminance values and rated the perceived brightness of the disk on a 9-point scale. When participants were required to evaluate and response to the 1-back trials, the current rating was assimilated toward 1-back trials. On the other hand, when participants were not required to evaluate the 1-back stimulus, the current rating was not affected by 1-back trials, independent of whether the response to the 1-back stimulus was required or not. These results suggest that the sequential effect was due to evaluation process but not to stimulus or response in the preceding trials.
KW - brightness
KW - estimation process
KW - sequential effect
UR - http://www.scopus.com/inward/record.url?scp=80054032052&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80054032052&partnerID=8YFLogxK
U2 - 10.1109/ICBAKE.2011.42
DO - 10.1109/ICBAKE.2011.42
M3 - Conference contribution
AN - SCOPUS:80054032052
SN - 9780769545127
T3 - Proceedings - 2011 International Conference on Biometrics and Kansei Engineering, ICBAKE 2011
SP - 95
EP - 99
BT - Proceedings - 2011 International Conference on Biometrics and Kansei Engineering, ICBAKE 2011
T2 - 2011 International Conference on Biometrics and Kansei Engineering, ICBAKE 2011
Y2 - 19 September 2011 through 22 September 2011
ER -