Posttraumatic Rumination: Content, Correlates, and Processes

Rumination Mediates the Relationship Between Childhood Traumas with Cognitive Defusion, Acceptance, and Emotion Regulation: A Qualitative and Quantitative Study

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.

Mechanisms of Change in Trauma-Focused Treatment for PTSD: The Role of Rumination

OBJECTIVE

Cognitive behavioral therapy (CBT) has been well established in the treatment of posttraumatic stress disorder (PTSD). In recent years, researchers have begun to investigate its underlying mechanisms of change. Dysfunctional cognitive content, i.e. excessively negative appraisals of the trauma or its consequences, has been shown to predict changes in PTSD symptoms over the course of treatment. However, the role of change in cognitive processes, such as trauma-related rumination, needs to be addressed. The present study investigates whether changes in rumination intensity precede and predict changes in symptom severity. We also explored the extent to which symptom severity predicts rumination.

METHOD

As part of a naturalistic effectiveness study evaluating CBT for PTSD in routine clinical care, eighty-eight patients with PTSD completed weekly measures of rumination and symptom severity. Lagged associations between rumination and symptoms in the following week were examined using linear mixed models.

RESULTS

Over the course of therapy, both ruminative thinking and PTSD symptoms decreased. Rumination was a significant predictor of PTSD symptoms in the following week, although this effect was at least partly explained by the time factor (e.g., natural recovery or inseparable treatment effects). Symptom severity predicted ruminative thinking in the following week even with time as an additional predictor.

CONCLUSIONS

The present study provides preliminary evidence that rumination in PTSD is reduced by CBT for PTSD but does not give conclusive evidence that rumination is a mechanism of change in trauma-focused treatment for PTSD.

A longitudinal investigation of trauma-specific rumination and PTSD symptoms: The moderating role of interpersonal trauma experience

BACKGROUND

Interpersonal trauma (IPT) is one of the most commonly reported types of traumatic experiences and has the greatest likelihood of resulting in a diagnosis of posttraumatic stress disorder (PTSD). Relative to other types of trauma, victims of IPT report greater trauma-specific rumination, whereby they focus on negative consequences of the trauma on their life. Theoretical and empirical work suggest trauma-specific rumination leads to elevated posttraumatic stress symptoms (PTSS); however, there has been a dearth of research examining how trauma type may impact this association. Therefore, the current longitudinal study examined how the experience of IPT moderates the relationship between trauma-specific rumination and later PTSS.

METHOD

Participants (N = 204) enrolled in a clinical trial completed self-report measures of trauma experience, trauma-specific rumination, and PTSS at baseline and 1-month follow-up appointments.

RESULTS

Results revealed that IPT moderated the relationship between baseline rumination and 1-month trauma symptoms, even after covarying for participant age and sex, treatment condition, negative affect, and number of previously experienced traumas. Further, this moderation effect was specific to the PTSD numbing cluster.

LIMITATIONS

Major limitations include measurement of PTSS via PCL-C rather than the PCL-5, as well as a limited sample size, precluding moderation analyses of other trauma types.

CONCLUSIONS

The current study provides novel findings demonstrating specificity of index trauma type in the longitudinal relationship between rumination and PTSS. Future work is needed to examine how IPT impacts the development of pathways between rumination and PTSS.

The comorbidity between autism spectrum disorder and post-traumatic stress disorder is mediated by brooding rumination

LAY ABSTRACT

Autism spectrum disorder is a neurodevelopmental condition characterized by social communication difficulties and restricted repetitive behaviors. Individuals with autism spectrum disorder are often diagnosed with other psychiatric conditions, including attention deficit hyperactivity disorder, anxiety, and depression. However, research on post-traumatic stress disorder among individuals with autism spectrum disorder is scarce. Nonetheless, studies have shown that those with autism spectrum disorder may face an increased risk of exposure to traumatic events. Separate lines of research in autism spectrum disorder and post-traumatic stress disorder have shown that the two may share several vulnerability factors. One of those is ruminative thinking, that is, one's tendency to re-hash thoughts and ideas, in a repetitive manner. This article examined the role of two rumination types as potential factors connecting autism spectrum disorder and post-traumatic stress disorder: brooding (continuously comparing one's current condition to one's desired condition) and reflection (an introspective effort to cognitively solve one's problems). A total of 34 adults with autism spectrum disorder (with no intellectual impairment) and 66 typically developing adults completed questionnaires assessing post-traumatic stress disorder symptoms and rumination. The results showed increased post-traumatic stress disorder symptoms in adults with autism spectrum disorder, compared to typically developing adults. Brooding rumination was also higher among those with autism spectrum disorder. Finally, brooding, but not reflection, served as a mechanism connecting autism spectrum disorder and post-traumatic stress disorder, that is, those with autism spectrum disorder showed increased brooding, which in turn predicted more post-traumatic stress disorder symptoms. This study has potential clinical implications. Rumination and cognitive inflexibility, which are common in autism spectrum disorder, could exacerbate post-traumatic symptoms among individuals with autism spectrum disorder who experience traumatic events. Interventions targeting brooding rumination and cognitive flexibility may assist in alleviating post-traumatic symptoms in individuals with autism spectrum disorder.

Stuck on the Train of Ruminative Thoughts: The Effect of Aggressive Fantasy on Subjective Well-Being

Previous studies have focused almost exclusively on identifying the antecedents of aggression and violence; as such, there are virtually no experimental data about the psychological consequences of fantasizing aggressive and violent actions. The present experiment aimed to fill this significant informational void in the literature by testing whether aggressive fantasy would influence people's rumination tendency and subjective well-being. We hypothesized that aggressive fantasy would make people more likely to ruminate, which would thereby lower their subjective well-being. To test this prediction, we recruited a sample of participants, who were adults in the United States (overall valid N = 113; 39 men; mean age = 36.27, SD = 11.27), and they were randomly assigned to either the aggressive fantasy condition or the control condition. At the beginning of the experiment, participants were asked to think of a person they despised and describe the characteristics of the despised person. Next, participants in the aggressive fantasy condition fantasized aggressive and violent actions toward the despised target, while participants in the control condition fantasized a control experience. Finally, their state rumination and subjective well-being were assessed. The results showed that, relative to participants who did not fantasize aggression, those who engaged in aggressive fantasy reported higher levels of rumination and lower levels of subjective well-being. Further analysis showed that enhanced rumination significantly mediated the effect of aggressive fantasy on subjective well-being. The present findings contribute to the literature by providing new insights into the psychological consequences of aggressive and violent responses and the underlying mechanism.

Increasing Mindfulness Skills of Veterans With PTSD Through Daily Mindfulness Training Incorporated Into an Intensive Treatment Program

Objectives

Mindfulness training is frequently included as part of an integrative care approach to treating PTSD in veterans. However, the utility and acceptability of daily group mindfulness training in an intensive treatment program (ITP) for PTSD have not been explored. The study objectives were to determine: (a) whether mindfulness skills significantly increased from pre- to post-treatment and (b) if daily group mindfulness training was acceptable to veterans.

Methods

Veterans (N = 170 outpatients, age M = 40.7 (SD 9.3), 67.6% male) in this prospective study were consecutively enrolled in a 3-week ITP that included daily mindfulness group sessions. Mindfulness skills were assessed using the Five Facet of Mindfulness Questionnaire (FFMQ) at intake and post-treatment. Acceptability was assessed using an anonymous post-treatment program satisfaction survey.

Results

Paired t tests demonstrated significant increases in overall mindfulness skills from pre- to post-treatment (t(169) = - 6.33, p < 0.001, d = 0.49). Small to medium effect sizes were observed across subscales: describing, (t(169) = - 5.91, p < 0.001, d = 0.38); acting with awareness, (t(169) = - 3.70, p < 0.001, d = 0.29); nonjudging, (t(169) = - 7.54, p < 0.001, d = 0.58); and nonreactivity, (t(169) = - 4.84, p < 0.001, d = 0.41). Most veterans (n = 125, 74.4%) found daily mindfulness training moderately to very helpful.

Conclusions

Veterans' mindfulness skills significantly increased over the course of a 3-week ITP, and mindfulness training was found acceptable. Mindfulness training can be delivered daily as part of an ITP for veterans with PTSD, and mindfulness skills can meaningfully increase over the course of 3 weeks. A significant limitation is the lack of control condition.

Strength and Temporal Variance of the Default Mode Network to Investigate Chronic Mild Traumatic Brain Injury in Service Members with Psychological Trauma

BACKGROUND

There is a significant number of military personnel with a history of mild traumatic brain injury (mTBI) who suffer from comorbid posttraumatic stress symptoms (PTS). Although there is evidence of disruptions of the default mode network (DMN) associated with PTS and mTBI, previous studies have only studied static connectivity while ignoring temporal variability of connectivity.

OBJECTIVE

To assess DMN disrupted or dysregulated neurocircuitry, cognitive functioning, and psychological health of active-duty military with mTBI and PTS.

METHOD

U.S. Army soldiers with PTS (n = 14), mTBI + PTS (n = 25), and healthy controls (n = 21) voluntarily completed a cognitive and symptom battery. In addition, participants had magnetic resonance imaging (MRI) to assess both static functional connectivity (SFC) and variance of dynamic functional connectivity (vDFC) of the DMN.

RESULTS

Both the PTS and mTBI + PTS groups had significant symptoms, but only the comorbid group had significant decrements in cognitive functioning. Both groups showed less stable and disrupted neural signatures of the DMN, mainly constituting the cingulate-frontal-temporal-parietal attention network. Specifically, the PTS group showed a combination of both reduced contralateral strength and reduced unilateral variability of frontal-cingulate-temporal connectivities, as well as increased variability of frontal-parietal connectivities. The mTBI + PTS group had fewer abnormal connectives than the PTS group, all of which included reduced strength of frontal-temporal regions and reduced variability frontal-cingulate-temporal regions. Greater SFC and vDFC connectivity of the left dorsolateral prefrontal cortex (dlPFC) ↔ precuneus was associated with higher cognitive scores and lower symptom scores.

CONCLUSIONS

Findings suggest that individuals with PTS and mTBI + PTS have a propensity for accentuated generation of thoughts, feelings, sensations, and/or images while in a resting state. Compared with controls, only the PTS group was associated with accentuated variability of the frontal-parietal attention network. While there were no significant differences in DMN connectivity strength between the mTBI + PTS and PTS groups, variability of connectivity was able to distinguish them.

Stressful Life Memories Relate to Ruminative Thoughts in Women With Sexual Violence History, Irrespective of PTSD

More than one in every four women in the world experience sexual violence (SV) in their lifetime, most often as teenagers and young adults. These traumatic experiences leave memories in the brain, which are difficult if not impossible to forget. We asked whether women with SV history experience stronger memories of their most stressful life event than women without SV history and if so, whether strength relates to ruminative and trauma-related thoughts. Using the Autobiographical Memory Questionnaire (AMQ), women with SV history (n = 64) reported this memory as especially strong (p < 0.001), remembering more sensory and contextual details, compared to women without SV history (n = 119). They further considered the event a significant part of their personal life story. The strength of the memory was highly correlated with posttraumatic cognitions and ruminative thoughts, as well as symptoms of depression and anxiety (p's < 0.001, n = 183). A third (33%) of the women with SV history were diagnosed with posttraumatic stress disorder (PTSD), but PTSD alone did not account for the increase in memory strength (p's < 0.001). These data suggest that the experience of SV increases the strength of stressful autobiographical memories, which are then reexperienced in everyday life during posttraumatic and ruminative thoughts. We propose that the repeated rehearsal of vivid stressful life memories generates more trauma memories in the brain, making the experience of SV even more difficult to forget.

Repetitive negative thinking and suicide: a burgeoning literature with need for further exploration

Extant research has found a significant overlap between various repetitive negative thinking (RNT) patterns, such as rumination and worry, across different affective disorders implicating that the process of repetitive negative thinking is likely trans-diagnostic. Furthermore, RNT patterns at the core of psychiatric disorders associated with suicide (e.g., rumination and worry) have been found to be associated with suicide even after accounting for the disorder. A synthesis of existing literature on repetitive negative thoughts suggest that following negative emotional experiences, RNTs may lead to a sense of entrapment and hopelessness that may contribute to the onset of suicidal ideation and then facilitate the transition from thinking about suicide to making a suicide attempt by increasing an individual's capability for suicide through repetitive exposure to violent thoughts and imagery associated with suicide.