@article{oai:bunkyo.repo.nii.ac.jp:00000217,
 author = {藤森, 進},
 journal = {人間科学研究, Bulletin of Human Science},
 month = {2004-12-01, 2009-02-10},
 note = {The present study simulated ability estimation based on item response theory, where several tests are conducted during a period in which the academic ability of learners shows improvement, in environments such as language schools. In such a situation, favorable ability estimates can be obtained by developing a prior distribution for the ability of learners based on past measurement results and performing Bayes estimation using the prior distribution. A normal distribution is generally used as a prior distribution; however, in the present study, ability estimation was done using an asymmetric lognormal distribution, which better suits a situation in which ability shows improvement. The results of the present simulation study showed that using a lognormal distribution as a prior distribution, rather than a normal distribution, enabled more favorable ability estimates to be obtained.},
 pages = {11--18},
 title = {非対称事前分布を利用した能力母数の推定 : 成長を前提としたテスト場面への適用},
 volume = {26},
 year = {}
}