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Research Output 2005 2019

  • 192 Citations
  • 6 h-Index
  • 16 Article
2019

Psychosocial Twin Cohort Studies in Japan: The Keio Twin Research Center (KoTReC)

Ando, J., Fujisawa, K. K., Hiraishi, K., Shikishima, C., Kawamoto, T., Nozaki, M., Yamagata, S., Takahashi, Y., Suzuki, K., Someya, Y., Ozaki, K., Deno, M., Tanaka, M., Sasaki, S., Toda, T., Kobayashi, K., Sakagami, M., Okada, M., Kijima, N., Takizawa, R. & 1 others, Murayama, K., 2019 Jan 1, (Accepted/In press) In : Twin Research and Human Genetics. p. 1-6 6 p.

Research output: Contribution to journalArticle

Open Access
Twin Studies
Japan
Cohort Studies
Research
Tokyo
2018
1 Citation (Scopus)
preschool age
Aptitude
Executive Function
cognitive ability
school readiness
2017
3 Citations (Scopus)
Executive Function
Preschool Children
Longitudinal Studies
Behavioral Genetics
Behavioral Research
2013
2 Citations (Scopus)

A multivariate twin study of early literacy in Japanese kana

Fujisawa, K., Wadsworth, S. J., Kakihana, S., Olson, R. K., DeFries, J. C., Byrne, B. & Andou, J., 2013 Apr, In : Learning and Individual Differences. 24, p. 160-167 8 p.

Research output: Contribution to journalArticle

twin studies
Behavioral Genetics
Twin Studies
Names
literacy
6 Citations (Scopus)

Bidirectional influences between maternal parenting and children's peer problems: A longitudinal monozygotic twin difference study

Yamagata, S., Takahashi, Y., Ozaki, K., Fujisawa, K., Nonaka, K. & Andou, J., 2013 Mar, In : Developmental Science. 16, 2, p. 249-259 11 p.

Research output: Contribution to journalArticle

Twin Studies
Monozygotic Twins
Parenting
Mothers
Maternal Behavior
6 Citations (Scopus)

Two cohort and three independent anonymous twin projects at the Keio Twin Research Center (KoTReC)

Andou, J., Fujisawa, K., Shikishima, C., Hiraishi, K., Nozaki, M., Yamagata, S., Takahashi, Y., Ozaki, K., Suzuki, K., Deno, M., Sasaki, S., Toda, T., Kobayashi, K., Sugimoto, Y., Okada, M., Kijima, N., Ono, Y., Yoshimura, K., Kakihana, S., Maekawa, H. & 4 others, Kamakura, T., Nonaka, K., Kato, N. & Ooki, S., 2013 Feb, In : Twin Research and Human Genetics. 16, 1, p. 202-216 15 p.

Research output: Contribution to journalArticle

Research
Twin Studies
Aptitude
Developmental Genes
Gene-Environment Interaction
2012
1 Citation (Scopus)

Genetic and environmental relationships between head circumference growth in the first year of life and sociocognitive development in the second year: A longitudinal twin study

Fujisawa, K., Ozaki, K., Suzuki, K., Yamagata, S., Kawahashi, I. & Andou, J., 2012 Jan, In : Developmental Science. 15, 1, p. 99-112 14 p.

Research output: Contribution to journalArticle

Twin Studies
Longitudinal Studies
Head
Growth
Parturition
6 Citations (Scopus)
Parenting
Parents
3 Citations (Scopus)

The effects of sibling relationships on social adjustment among japanese twins compared with singletons

Nozaki, M., Fujisawa, K., Andou, J. & Hasegawa, T., 2012 Dec, In : Twin Research and Human Genetics. 15, 6, p. 727-736 10 p.

Research output: Contribution to journalArticle

Social Adjustment
Siblings
Dizygotic Twins
Monozygotic Twins
Child Development
2009
2 Citations (Scopus)

Social network analyses of positive and negative relationships among Japanese preschool classmates

Fujisawa, K., Kutsukake, N. & Hasegawa, T., 2009, In : International Journal of Behavioral Development. 33, 3, p. 193-201 9 p.

Research output: Contribution to journalArticle

dyad
Social Support
social network
network analysis
classroom
2008
26 Citations (Scopus)

Reciprocity of prosocial behavior in Japanese preschool children

Fujisawa, K., Kutsukake, N. & Hasegawa, T., 2008 Mar, In : International Journal of Behavioral Development. 32, 2, p. 89-97 9 p.

Research output: Contribution to journalArticle

Preschool Children
preschool child
reciprocity
Helping Behavior
dyad
3 Citations (Scopus)

The stabilizing role of aggressive children in affiliative social networks among preschoolers

Fujisawa, K., Kutsukake, N. & Hasegawa, T., 2008 Nov 1, In : Behaviour. 145, 11, p. 1577-1600 24 p.

Research output: Contribution to journalArticle

social networks
preschool children
Social Support
conflict management
aggression
2006
42 Citations (Scopus)

Cooperation and conversations about the mind: A study of individual differences in 2-year-olds and their siblings

Hughes, C., Fujisawa, K., Ensor, R., Lecce, S. & Marfleet, R., 2006 Mar, In : British Journal of Developmental Psychology. 24, 1, p. 53-72 20 p.

Research output: Contribution to journalArticle

Individuality
Siblings
Aptitude
Theory of Mind
Foster Home Care
31 Citations (Scopus)

Peacemaking and consolation in Japanese preschoolers witnessing peer aggression

Fujisawa, K., Kutsukake, N. & Hasegawa, T., 2006 Feb, In : Journal of Comparative Psychology. 120, 1, p. 48-57 10 p.

Research output: Contribution to journalArticle

preschool children
peers
aggression
Aggression
Preschool Children
25 Citations (Scopus)

The Tokyo Twin Cohort Project: Overview and initial findings

Andou, J., Nonaka, K., Ozaki, K., Sato, N., Fujisawa, K., Suzuki, K., Yamagata, S., Takahashi, Y., Nakajima, R., Kato, N. & Ooki, S., 2006 Dec, In : Twin Research and Human Genetics. 9, 6, p. 817-826 10 p.

Research output: Contribution to journalArticle

Tokyo
Registries
Multiple Birth Offspring
Placentation
Selection Bias
2005
35 Citations (Scopus)

Reconciliation pattern after aggression among Japanese preschool children

Fujisawa, K., Kutsukake, N. & Hasegawa, T., 2005 Mar, In : Aggressive Behavior. 31, 2, p. 138-152 15 p.

Research output: Contribution to journalArticle

Preschool Children
Aggression
Observation
Reconciliation
Preschool children