以積極心理學的視角,基于自殺的應激–易感模型和自殺的緩沖假設,考察負性生活事件與自殺意念的關系,并探討反芻思維的中介作用及氣質性樂觀的調節作用。采用青少年生活事件量表、反芻思維量表、修訂版生活傾向問卷、貝克自殺意念量表,對1191名大學生進行集體施測,結果表明:(1)負性生活事件對大學生的反芻思維和自殺意念均有顯著正向預測作用;(2)反芻思維在負性生活事件與自殺意念之間具有中介作用;(3)氣質性樂觀對反芻思維與自殺意念的中介過程存在調節作用,相對于氣質性樂觀水平較高的大學生,中介效應僅在氣質性樂觀水平低的大學生中顯著。

From the perspective of positive psychology, the present study constructed a moderated mediation model to examine whether or not rumination mediates the relationship between negative life events and college students’ suicidal ideation, and whether or not this mediating process is moderated by dispositional optimism. For this purpose, 1191 college students were recruited to participate in this study with Beck Scale for Suicide Ideation, Adolescent Self-Rating Life Events Check List, Rumination Response Scale-Chinese Version and the Life Orientation Test-revised. The results were as followings: 1) Negative life events significantly contributed to rumination and suicidal ideation; 2) Rumination played a mediating role in the relationship between negative life events and suicidal ideation; 3) Dispositional optimism moderated the mediated path through rumination, such that this mediating effect was only significant for one with dispositional optimism at a low level.