上下法データのベイズ的分析 : 確率モデルによるデータの活用
2011 年 30 巻 1 号 p. 44-55
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2011 年 30 巻 1 号 p. 44-55
Bayesian analysis is applied to experimental data to effectively exploit information by the up-down method. Comparing Bayesian analysis to the standard one, which estimates the point of subjective equality (PSE) by averaging part of the comparison stimuli, confirms the two methods do not differ in terms of the PSE estimation. However, the standard analysis estimates only the PSE, whereas Bayesian analysis can also estimate a just noticeable difference (JND). Estimates of the PSE and JND determine a psychometric function. These results reveal that the Bayesian analysis is useful and superior to the standard analysis.
