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The Tokyo Foundation for Policy Research

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藤澤 啓子/Keiko Fujisawa

RESEARCH DIRECTOR

Keiko Fujisawa

Last updated : October 04, 2023

Professor, Faculty of Letters, Keio University

Areas of Expertise
  • Developmental psychology
  • childcare environment

Bio
After graduating from the Faculty of Education, University of Tokyo, I completed the doctoral course at the university’s Graduate School of Arts and Sciences, working as a research fellow (DC1) at the Japan Society for the Promotion of Science during the doctoral course. I became an assistant professor in the Faculty of Letters, Keio University, in 2007, associate professor in 2015, and professor in 2022. I hold a PhD (academic) and am a certified public psychologist.

Research Program
The Impact of Quality of Education on Children’s Cognitive and Noncognitive Skills

Select Publications

Fujisawa, K.K., Kutsukake, N., & Hasegawa, T. (2005). Reconciliation pattern after aggression among Japanese preschool children. Aggressive Behavior, 31, 138-152. https://doi.org/10.1002/ab.20076

  1. Hughes, C., Fujisawa, K K., Ensor, R., Lecce, S., & Marfleet, R. (2006). Cooperation and conversations about the mind: A study of individual differences in 2-year-olds and their siblings. British Journal of Developmental Psychology, 24, 53-72. https://doi.org/10.1348/026151005X82893
  2. Fujisawa, K.K., Kutsukake, N., & Hasegawa, T. (2006). Peacemaking and consolation in Japanese preschoolers witnessing peer aggression. Journal of Comparative Psychology, 120, 48-57. https://doi.org/10.1037/0735-7036.120.1.48
  3. Ando, J., Nonaka, K., Ozaki, K., Sato, N., Fujisawa, K.K., Suzuki, K., Yamagata, S., Takahashi, Y., Nakajima, R., Kato, N., & Ooki., S. (2006). The Tokyo Twin Cohort Project: Overview and initial findings. Twin Research and Human Genetics, 9, 817-826. https://doi.org/10.1375/183242706779462480
  4. Fujisawa, K.K., Kutsukake, N., & Hasegawa, T. (2008). Reciprocity of prosocial behavior in Japanese preschool children. International Journal of Behavioral Development, 32, 89-97. https://doi.org/10.1177/0165025407084055
  5. Fujisawa, K.K., Kutsukake, N., & Hasegawa, T. (2008). The stabilizing role of aggressive children in affiliative social networks among preschoolers. Behaviour, 145, 1577-1600. https://doi.org/10.1163/156853908786131289
  6. Fujisawa, K.K., Kutsukake, N., & Hasegawa, T. (2009). Social network analyses of positive and negative relationships among Japanese preschool classmates. International Journal of Behavioral Development, 33,193-201. https://doi.org/10.1177/0165025408098015
  7. Fujisawa, K.K., Yamagata, S., Ozaki, K., & Ando, J. (2012). Hyperactivity/inattention problems moderate environmental but not genetic mediation between negative parenting and conduct problems. Journal of Abnormal Child Psychology, 40, 189-200. https://doi.org/10.1007/s10802-011-9559-6
  8. Fujisawa, K.K., Ozaki, K., Suzuki, K., Yamagata, S., Kawahashi, I., & Ando, J. (2012). The 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. Developmental Science,15, 99-112. https://doi.org/10.1111/j.1467-7687.2011.01097.x
  9. Nozaki, M., Fujisawa, K.K., Ando, J., & Hasegawa, T. (2012). The effects of sibling relationships on social adjustment among Japanese twins compared with singletons. Twin Research and Human Genetics, 15, 727-736. https://doi.org/10.1017/thg.2012.56
  10. Yamagata, S., Takahashi, Y., Ozaki, K., Fujisawa, K.K., Nonaka, K., & Ando, J. (2013). Bidirectional influences between maternal parenting and children’s peer problems: A longitudinal monozygotic twin difference study. Developmental Science, 16, 249-259. https://doi.org/10.1111/desc.12021
  11. Fujisawa, K.K., Wadsworth, S. J., Kakihana, S., Olson, R. K., DeFries, J.C., Byrne, B., Ando, J. (2013). A multivariate twin study of early literacy in Japanese kana. Learning and Individual Differences, 24, 160-167. https://doi.org/10.1016/j.lindif.2012.12.018
  12. Ando, J., Fujisawa, K.K., Shikishima, C., Hiraishi, K., Nozaki, M., Yamagata, S., Ooki, S. (2013). Two Cohort and Three Independent Anonymous Twin Projects at the Keio Twin Research Center (KoTReC). Twin Research and Human Genetics, 16, 202-216. https://doi.org/10.1017/thg.2012.131
  13. Fujisawa, K.K., Todo, N., & Ando, J. (2016). Genetic and environmental influences on the development and stability of executive functions in children of preschool age: A longitudinal study of Japanese twins. Infant and Child Development. [e1994]. https://doi.org/10.1002/icd.1994
  14. Fujisawa, K.K., Todo, N., & Ando, J. (2019). Changes in Genetic and Environmental Influences on Cognitive Ability, Executive Function, and Preacademic Skills in Japanese Preschool Age Twins. Developmental Psychology, 55, 38-52. https://doi.org/10.1037/dev0000627
  15. Ando, J., Fujisawa, K.K., Hiraishi, K., Shikishima, C., Kawamoto, T., Nozaki, M., Murayama, K. (2019). Psychosocial Twin Cohort Studies in Japan: The Keio Twin Research Center (KoTReC). Twin Research and Human Genetics, 22(6), 591-596. https://doi:10.1017/thg.2019.109

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