Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research
Date (from‐to) : 2013/04 -2016/03
Author : Hayakawa Kazuo; AKIYAMA Akiko
Research results of this study were published in several research paper on twin language phenomenan.In sociability, the rate of percentile rank under 30 was highest in Dz femail(61.9%) and lowest in MZ mails(49.2). in home adaptation, the rate of percentile rank under 30 was highest inDz mails(55.0%), and lowest in Mz femails(38.2%). In school adaptation, the rate of percentile rank under 30 was highest in DZ oposite-sex pairs(48.1%), and lowest in MZ males(34.4%).In the score of social competence, the correlation coefficient was 0.817, for MZ pairs and 0.549 for Dz pairs in sociability, 0.659 for MZ pairas and 0.550 for Dz pairs, suggesting a possible genetic basis for this trait. This is a veryimportant result on twin language phenomenon.