@article{oai:sanotan.repo.nii.ac.jp:00000027,
 author = {大塚, 登},
 issue = {22},
 journal = {佐野短期大学研究紀要},
 month = {Mar},
 note = {This paper deals with phonetic perception of Japanese phonemes /s/,/∫/,/r/ and /d/. 12 preschool children, ranging 5 years 10 month old to 6 years 7 month old, could discriminate between /s/ and /∫/, but 7 of them could not discriminate between /r/ and /d/. And all of them could identify /s/ and /∫/, and half of them could not identify /r/ and /d/. This paper shows that preschool children have adult-like perceptual ability of /s/ and /∫/,but not of /r/ and /d/. So the perceptual development of Japanese phonemes varies from one to another., 10, KJ00007050139, 論文},
 pages = {87--92},
 title = {ニホンゴ シイン ノ チカク ハッタツ : r d ト s ∫; ノ ヒカク},
 year = {2011},
 yomi = {オオツカ, ノボル}
}