Association between DNA polymorphysm/methylation and attachment continuity.

• Project/Area Number: 16K13479
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Educational psychology
• Research Institution: Tsurumi Junior College
• Principal Investigator: Saito Akira 鶴見大学短期大学部, 保育科, 准教授 (10225691)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: アタッチメント連続性 / DNA多型・メチル化 / 内的表象モデル / アタッチメント内的表象 / アタッチメント

Outline of Final Research Achievements

The purpose of the study is to assess the effect of the DNA polymorphism and methylation on the attachment continuity from infancy through adolescence.
The factor analysis extracted two factors, secure and ambivalence, from infant attachment behaviors in the strange situation procedure. Covariance structure analysis yielded that the polymorphism of 5-HTTLPR has different effects on the association between infant secure factor and adult security.