自傷行為尺度作成の試みとその検討  [in Japanese] Improvement of the Scales for Evaluation of Self-injurious Behaviors  [in Japanese]

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Abstract

本研究の目的は,自傷行為が行われる傾向を測定する尺度を作成し,今後の疫学的研究に資することである.これまでの自傷行為尺度は,行動的要因の項目のみで構成されており,自傷行為者特有の心理社会的要因についての質問は含まれていなかった.さらにその項目は,自傷行為に関して直接的に表現されており,尺度の精度や倫理的側面に疑問が残る.そこで本研究では,行動的要因における損傷度の高い自傷行為の表現を避け,間接的な表現にし,さらに心理社会的要因からの項目を含めることで,自傷行為者の特性を全体的にとらえ,精度の高い尺度を作成した.大学生209人を対象に質問紙調査を試行した.探索的因子分析,および確認的因子分析の結果,「抑圧状態」「自責思考」「承認欲求」「親子葛藤」の4因子20項目が最も適合した.次に構成概念的妥当性を確認するために54人の学生を対象に調査を実施し,また,基準関連妥当性を確認するために13人の自傷行為者を対象に調査を実施した結果,いずれも妥当性があると認められた.この尺度の使用によって,被験者が回答する際の心理的な負担を軽減することができ,項目からの,バイアスを回避し,精度の高い調査を行うことが可能である.

Objectives : We improved the scales for measuring the frequency of self-injurious behaviors in young adults. The existing scales contained only factors about behavior and some questions of the scales were directly expressing on self-injury, which gave examinees much stress and gave bias to the results. We modified the existing scales and created new categories of the scales as psychosocial factors to improve the accuracy of the measurement. Method : We made an improved questionnaire without direct expressions on self-injury And we added new questions including psychosocial factors into the questionnaire that were expressing indirectly on self-injurious behaviors and could capture the comprehensive personalities of self-injurors. Improved scales were administered to 209 undergraduates. Improved scales and STAI (State-Trait Anxiety Inventory-JYZ), STAXI (State-Trait Anger Expression Inventory), and YGPI (Yatabe-Guilford Personality Inventory) were administered to 54 college students to test the correlation with personality. 13 samples of self-injurious behaviors in young adults were obtained and used for validation. Results Explanatory factor analysis and confirmatory factor analysis indicated that 20 questions derived from 4 categories ("Oppression state", "Self-reproach thinking", "Approval desire", and "Parent and child conflict") were most suitable to measure the tendency of self-injurious behaviors in young adults. Comparison with personality tests and an examination of seif-injurors in young adults suggested that these new scales were reliable in appropriate correlation with personality tests and were able to measure the tendency of self-injury in criterion-related validity. Conclusion : The improved scales we made were very effective to the research of self-injurious behaviors. We avoided direct expressions on self-injury and it reduced mental stress of respondents. Psychosocial factors made it possible to find the character of self-injuror comprehensively. These improved scales will reduce bias from the results of questionnaire and accordingly it is expected that the accuracy of the measurement will be enhanced.

Journal

  • Japanese Journal of Psychosomatic Medicine

    Japanese Journal of Psychosomatic Medicine 53(12), 1112-1119, 2013

    Japanese Society of Psychosomatic Medicine

Codes

  • NII Article ID (NAID)
    110009685656
  • NII NACSIS-CAT ID (NCID)
    AN00121636
  • Text Lang
    JPN
  • ISSN
    0385-0307
  • NDL Article ID
    025033510
  • NDL Call No.
    Z19-26
  • Data Source
    NDL  NII-ELS  J-STAGE 
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