Distinct effects of over-general autobiographical memory on suicidal ideation among depressed and healthy people
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RESEARCH ARTICLE
Open Access
Distinct effects of over-general autobiographical memory on suicidal ideation among depressed and healthy people Wen Jiang1, Guangtao Hu2, Jingxuan Zhang1, Ken Chen3, Dongni Fan1 and Zhengzhi Feng1*
Abstract Background: Childhood trauma and over-general autobiographical memory (OGM) are crucial risk factors of suicide. This study aimed to investigate whether suicidal ideation was predicted by one’s childhood trauma and OGM and the mechanism of OGM underlying suicidal ideation in depression patients and healthy controls. Methods: A total of 180 depression patients and 176 matched healthy individuals were recruited in this study. Data were analyzed using descriptive statistics, and Pearson’s correlation coefficient was obtained. Path analysis was conducted to test a meditational model. The multigroup comparison was applied to find differences between groups. Results: Significant differences were detected between depression patients and healthy controls with respect to childhood trauma, OGM, suicidal ideation, and suicidal behavior. OGM was positively correlated with both current and worst-point suicidal ideation in the depression group and significantly correlated with worst-point suicidal ideation in the healthy control group. The path model showed that childhood trauma had a direct impact on the current suicidal ideation directly, and an indirect influence through OGM and worst-point suicidal ideation. Multigroup analysis further demonstrated that OGM affected and mediated the current suicidal ideation due to childhood trauma in depression patients, whereas only worst-point suicidal ideation was affected in healthy controls. Conclusions: The OGM mediates suicidal ideation in depression patients, but only affects the worst-point suicidal ideation in the healthy controls. As it is one of the major risk factors of suicidal ideation in depression, amelioration of OGM might be an useful method to reduce or prevent suicidal ideation in depression patients. Keywords: Autobiographical memory, Over-general memory, Depression, Childhood trauma, Suicidal ideation
Background Suicide is a major public health concern worldwide. According to the report of the World Health Organization, one person commits suicide every 40 s. It has become the second leading cause of deaths among 15–29-year* Correspondence: [email protected] 1 School of Psychology, Army Medical University, Chongqing, China Full list of author information is available at the end of the article
olds globally [1]. The rate of suicide is much higher in depression patients than healthy people. About 65–80% of the depression patients have suicidal ideation, and 45–55% patients have suicidal or self-injury behavior [2]. Death by suicide is associated with a huge economic, social, and psychological burden for individuals, families, communities, and countries [3]. Thus, preventing
© The Author(s). 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation,
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