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Elucidation of Suicide Mechanisms and Development of Preventive Intervention Methods for Japanese Adolescents Based on Biopsychosocial Model

Research Project

Project/Area Number 19K14385
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 10020:Educational psychology-related
Research InstitutionNara University of Education

Principal Investigator

ISHII Ryo  奈良教育大学, 学校教育講座, 准教授 (50804572)

Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords自殺 / 自殺の対人関係理論 / 自殺念慮 / 青年期 / 時間的展望 / 社会経済的地位 / 金融リテラシー / スクールカースト / 機械学習 / Balanced Random Forest / ROC曲線 / 学校移行 / 抑うつ / 青年 / 生物心理社会モデル
Outline of Research at the Start

日本人青年の自殺者数は、他先進国では類を見ない程の高水準である一方、青年の自殺メカニズムに関するエビデンスは十分に蓄積されていない。本研究では、リスク要因として指摘され続けている社会経済的地位の低さが、青年にどのような心理状態をもたらして自殺へ結びつくのかを解明し、メカニズムに基づく予防的介入方法を開発する。

Outline of Final Research Achievements

The six studies were conducted primarily to examine how SES (social factors), financial literacy, adolescent developmental factors (psychological factors), and positive emotions associated with inappropriate financial behavior based on biological bases are associated with risk factors for adolescent suicide. The psychological mechanisms of suicide among Japanese adolescents were shown to be related to the perception of suicide as a release from suffering, school caste, and the congruence of parents' and children's future perspective. The results also suggest that educational interventions on financial literacy may reduce suicide risk and improve inappropriate financial behaviors associated with positive emotions.

Academic Significance and Societal Importance of the Research Achievements

これまで疫学的な知見にとどまっていたSESと自殺の関連について、経済的な効力感という機序による理解を進めることができた。また、SESを低下させる不適切な金融行動の背景に、ポジティブ感情という生物学的な基盤が想定される機序による理解を進めることもできた。これらの点に加え、古くから自殺との関連が指摘されてきたアイデンティティと自殺との関連について、死生観を含めて示した点や、発達と文化的な側面が重なる要因の重要性を示した点は、学術的な意義と考えられる。また、こうした機序に基づき、金融リテラシーへの介入によって、自殺リスクを低下させられる可能性を示唆した点は、社会的な意義の1つと考えられる。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (7 results)

All 2023 2022 2021 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Predicting adolescents’ suicidal desire using Balanced Random Forest2023

    • Author(s)
      Ishii Ryo
    • Journal Title

      The Japanese journal of psychology

      Volume: 94 Issue: 2 Pages: 149-159

    • DOI

      10.4992/jjpsy.94.22005

    • ISSN
      0021-5236, 1884-1082
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 高校生の自殺リスクとスクールカーストの経験2023

    • Author(s)
      石井 僚・田之上 真一・藪内 綾
    • Organizer
      日本心理学会第87回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Justification of ostracism strengthen the association between future time perspective and adolescents’ suicidal risk2022

    • Author(s)
      Ishii, R
    • Organizer
      15th International Congress of Clinical Psychology
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Prediction of adolescents' suicide risk using machine learnig and social survey data from Japan2021

    • Author(s)
      Ishii, R.
    • Organizer
      14th International Congress of Clinical Psychology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 社会経済的地位と抑うつの関連に対する金融リテラシーの調整効果2020

    • Author(s)
      石井 僚・大山 拓也・遠藤 秀紀
    • Organizer
      日本心理学会第84回大会
    • Related Report
      2020 Research-status Report
  • [Presentation] アイデンティティの混乱はなぜ青年の自殺リスクになるのか――死生観の媒介効果の検討――2020

    • Author(s)
      石井 僚・原田 雅也・江 聚名
    • Organizer
      日本発達心理学会第31回大会
    • Related Report
      2019 Research-status Report
  • [Presentation] The effect of self-perception in childhood on the relationship between socioeconomic status during childhood and help-seeking styles in adolescence2019

    • Author(s)
      Ishii, R, Fujii, R, Funo, S, Hirose, Y, Kuromatsu, T, Matano, Y, & Miyamoto, M
    • Organizer
      19th European Conference on Developmental Psychology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2025-01-30  

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