This study examines the intermediary role of rumination in the relationship between childhood traumas in young adults and cognitive defusion, psychological acceptance, and suppression which is one of the emotion regulation strategies. In the quantitative stage of the study formed according to the explanatory sequential design, the intermediary role of rumination by using a structural equation model while in the qualitative stage, the intermediary role of rumination was analyzed through interviews using the interpretive phenomenology design. Personal Information Form, Childhood Trauma Scale, Short Form Ruminative Response Scale, Acceptance and Action Form II, Drexel Defusion Scale, and Emotion Regulation Scale were used in the research. At the end of the research, it was determined that childhood traumas have a negative effect on cognitive defusion and acceptance, while they have a positive effect on suppression. It was seen that rumination has a partial intermediary role in the relationship of childhood traumas with cognitive defusion, acceptance, and suppression. As a result of the qualitative analysis, twelve themes such as "Constantly thinking about the past, not being able to move away from childhood traumas, not being able to forgive their parents, inability to get rid of negative thoughts, living in the past, moving away from a value-driven life, false expression of emotion, suppression of emotions, emotions reflected in behavior, coping with negative emotions and desired emotion regulation" emerged concerning participants' experiences of cognitive defusion, acceptance, and suppression. Although one of the purposes of using AAQ-II in the study was to support discussions about the scale via qualitative results, this was a limitation for the study. Therefore, although a high rate was obtained, it is not possible to infer that childhood traumas and rumination can explain acceptance behaviors. For this, much more quantitative and qualitative studies are needed. Other qualitative research findings are thought to support quantitative research findings.

本研究探讨了沉思在年轻人童年创伤与认知解离、心理接受和抑制（情绪调节策略之一）之间的关系中的中介作用。在研究的定量阶段，采用解释性序贯设计，利用结构方程模型分析反刍的中介作用；在定性阶段，采用解释现象学设计，通过访谈的方式分析反刍的中介作用。研究中使用了个人信息表、童年创伤量表、简式反省反应量表、接受与行动表II、德雷克塞尔解离量表和情绪调节量表。研究结束时确定，童年创伤对认知解离和接受有负面影响，而对压抑有积极影响。研究发现，沉思在童年创伤与认知解离、接受和抑制的关系中具有部分中介作用。定性分析的结果是，“不断思考过去、无法摆脱童年创伤、无法原谅父母、无法摆脱消极想法、活在过去、远离价值驱动的生活、错误的情绪表达、压抑情绪、行为中反映的情绪、应对负面情绪和期望的情绪调节”出现在参与者认知解离、接受和压抑的经历中。尽管在研究中使用 AAQ-II 的目的之一是通过定性结果支持有关量表的讨论，但这对研究来说是一个限制。因此，虽然获得了很高的比率，但不可能推断童年创伤和沉思可以解释接受行为。为此，需要更多的定量和定性研究。其他定性研究结果被认为支持定量研究结果。