原　　　著

性格心理学研究
1998　第7巻　第2号　88‐98

境界性人格特性の高さに対する心的外傷体験の持続的効果の検討

井　沢　功一朗　　
日本学術振興会特別研究員

本研究では境界性に対して心的外傷体験が及ぼす持続的効果について検討した．検討は，1）過去における心的外傷体験が現在の境界性に及ぼす効果，2）状況的なストレス体験が境界性に及ぼす効果，3）心的外傷体験と状況的ストレス体験が境界性に及ぼす効果の比較，の3段階に沿って行われた．それぞれの分析は異なる3時点で得られた時系列データを用いて行われた．被験者は医療技術系専門学校の女子学生76人であった．分析の結果，1）過去に何らかのタイプの心的外傷体験を有する者はより高い境界性得点を示す，2）状況的ストレスを体験した者は境界性得点の一時的上昇を示す，3）心的外傷体験は境界性の高さに対して持続的効果を，また，状況的ストレスもゆるやかな持続的効果をそれぞれ有することが確認された．心的外傷，ストレスとデータ測定3時点との交互作用が検討された．

キーワード：心的外傷体験，境界性，持続的効果
K.IZAWA (Research Fellow, The Japan Society for the Promotion of Science)
Persistent effects of traumatic experiences on borderline personality trait.
THE JAPANESE JOURNAL OF PERSONALITY 1998, Vol.7 No.2,88‐98.
In this study, persistent effects of traumatic experiences on borderline personality trait were analyzed. Sequential data at three points in time were collected of 76 female students at a medical technology school. Examined were: 1) effects of past traumatic experiences on present borderline score of MCMI-II personality inventory, 2) temporal effects of recent situational stress experiences on the score, and 3) persistent effects of traumatic experiences, in contrast to the temporal effects. Results were as follows: 1) Students who reported a traumatic experience in infancy showed a significantly higher borderline score than those who did not. 2) Students who recently experienced a stressful life event showed a temporal increase in the borderline score. 3) Traumatic experiences had persistent effects, and situational stress had weak persistent effects on the score. Interaction effects of traumatic experience, situational stress, and time of data collection on borderline personality trait were also discussed.
Key words: borderline personality trait, traumatic experience, stressful situation, persistent effect, panel study
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