A multivariate twin study of early literacy in Japanese kana 論文 Keiko K. Fujisawa・Sally J. Wadsworth・Shinichiro Kakihana・Richard K. Olson・John C. DeFries・Brian Byrne・Juko Ando ·2013-01-10 ·『Learning and Individual Differences』 24 pp. 160-167 doi:10.1016/j.lindif.2012.12.018