The effects of mindfulness-based techniques on self-rumination, cognitive reappraisal and expressive suppression among patients with major depression: a nursing perspective.

Background: Patients with major depressive disorder (MDD) often struggle with adaptive strategies like self-reflection and cognitive reappraisal, relying instead on maladaptive ones like self-rumination and emotional suppression. Mindfulness-based techniques (MBTs) have been identified as a promising complementary psychological intervention for this population. Aims: To evaluate the effects of MBTs on mindful attention awareness, self-rumination, self-reflection, cognitive reappraisal and expressive suppression in patients with MDD between patients who receive MBTs and those who do not. Methods: This quasi-experimental research was carried out at the Psychiatric Outpatient Clinics. A representative sample of 120 patients with MDD were randomly recruited to either a study group (n = 60) or a control group (n = 60). The Mindful Attention Awareness Scale (MAAS), The Rumination-Reflection Questionnaire (RRQ) and The Emotion Regulation Questionnaire (ERQ) were utilised to collect data. Results: After participation in MBTs, the study group had significantly greater improvements in the mean scores of MAAS, RRQ, Cognitive Reappraisal and Expressive Suppression compared to the control group (p < 0.001 each). Recommendations: The study recommends developing and implementing training programmes for nurses to equip them with the skills and knowledge to effectively deliver MBTs as part of patient care. Conducting longitudinal studies is necessary to assess the sustainability of these improvements.

Mediating effects of rumination on insomnia in cancer survivors: Influences of cancer-related fatigue, fear of recurrence, and psychological distress.

BACKGROUND: While advancements in cancer treatments have improved survival rates, they also lead to adverse effects such as insomnia, which significantly impacts survivors' sleep quality. OBJECTIVE: This study explores the influence of cancer-related fatigue (CRF), Fear of Cancer Recurrence (FCR), and psychological distress, with rumination serving as a mediating factor, on the insomnia experienced by cancer survivors. METHODS: The study involved 220 cancer survivors attending Shohada-e-Tajrish Hospital's oncology center in Tehran, Iran. Participants were selected through convenience sampling and completed several questionnaires: the Insomnia Severity Index, Fear of Cancer Recurrence Inventory, Cancer Fatigue Scale, Kessler Psychological Distress Scale, and Rumination Response Scale. RESULTS: The results showed that the tested model had a good fit, and the correlation matrix demonstrated significant positive correlations between CRF (0.46), FCR (0.15), psychological distress (0.55), and rumination (0.42) with insomnia in cancer survivors (p < 0.05). Notably, CRF (B = 0.356, p < 0.001) and psychological distress (B = 0.339, p < 0.001) affect insomnia both directly and indirectly through mediation by rumination, while the impact of FCR on insomnia was indirectly significant (B = 0.73, p < 0.05). CONCLUSION: The findings suggest that interventions focused on managing rumination could be potential targets to alleviate insomnia and improve the sleep quality of cancer survivors.

Multidisciplinary behavioral therapy reduces rumination.

BACKGROUND: Behavioral therapy has proved effective as rumination therapy. Our objective was to treat rumination patients using multidisciplinary behavioral therapy aimed at reducing ≥2 of the rumination score. METHODS: All patients fulfilled Rome IV criteria for rumination and were referred to speech therapy for psychoeducation, diaphragmatic breathing exercises and guided eating, physiotherapy for exercises to relax the thoracic and abdominal muscles, and consultation with the psychologist and the dietitian. Symptoms, depression, anxiety, health-related quality of life (HRQoL), and functional capacity were evaluated by questionnaires (Rome IV, Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI), 15D, and World Health Organization Disability Assessment Schedule (WHODAS) 2.0) at baseline and at 6-month control. Esophageal manometry was performed at 6-month control. KEY RESULTS: The study enrolled 11 patients (19-64 years, 10 female). Rumination score: 6.5 (5-8) at baseline, 4.0 (3-5) at the 6-month control, p = 0.005. BDI/8 (6-13), BAI/15 (8-29) at baseline; BDI/7 (4-8), BAI/15 (7-27) at the 6-month control, NS. 15D score: 0.800 at baseline, 0.845 at the 6-month control, NS. WHODAS 2.0 score: 15 (7-33) at baseline, 11 (7-26) at the 6-month control, NS. Rumination could be evoked in manometry in six of nine (67%) patients at 6-month control. CONCLUSIONS AND INFERENCES: Behavioral multidisciplinary therapy significantly reduces the self-assessed frequency of rumination. These patients have more depression, anxiety and a lower HRQoL compared to the normal population.

Association between rumination, suicidal ideation and suicide attempts in persons with depressive and other mood disorders and healthy controls: A systematic review and meta-analysis.

INTRODUCTION: Suicidal ideation and behaviors are a leading cause of disability worldwide. Approximately 90 % of suicide completers have a diagnosable mood disorder. Extant literature reports rumination mediates functional impairment across mood disorders. Herein, we report the association between rumination and suicidality amongst persons with psychiatric disorders and healthy controls. METHODS: Our systematic review and meta-analysis included relevant articles retrieved from Web of Science, OVID and PubMed from inception to March 20, 2024. Random effects model was used to calculate the correlation between rumination, suicidal ideation and attempt. RESULTS: A total of 27 eligible studies were included in our systematic review and meta-analysis. Rumination (r = 0.25 [95 % CI: -0.03, 0.49]), reflection (r = 0.15 [-0.71, 0.83]) and brooding (r = 0.13 [-0.58, 0.73]) were nonsignificantly correlated with suicidal ideation in mood disorders. Suicide attempt history was significantly associated with greater odds of rumination in persons with depressive disorders (OR = 1.13 [0.42, 3.02]). In healthy controls, rumination (r = 0.30 [0.21, 0.38]), reflection (r = 0.23 [0.13, 0.32]) and brooding (r = 0.24 [0.12, 0.36]) were significantly correlated with suicidal ideation. Rumination also predicted lifetime history of suicide attempts in healthy controls (OR = 1.70 [1.16, 2.49]). LIMITATIONS: There were inadequate sample sizes of persons with different mood and psychiatric disorders which may have underpowered our ability to detect clinically meaningful associations. DISCUSSION: Our study reports a transdiagnostic association between measures of rumination and suicidality. Future research vistas should parse the neurobiological substrates subserving rumination and identify targeted therapies and their association with general cognition and treatment response.

Compare the effectiveness of two treatments, behavioral activation and acceptance and commitment therapy, on depression and mental rumination in mothers of children with cerebral palsy in Ilam city.

BACKGROUND: Since in most families, mothers are more responsible for taking care of children and have more responsibility than fathers for monitoring the child, taking care of a disabled child can have a more negative effect on the psychological state of mothers. This study aimed to investigate the effectiveness of behavioral activation (BA) and acceptance and commitment therapy (ACT) in depression and rumination in mothers with children with cerebral palsy. MATERIALS AND METHODS: This research was quasi-experimental field research with a pre-posttest and control group. The study population comprised 237 mothers with children who had cerebral palsy and were referred to occupational therapy centers in Ilam, Iran. The sample consisted of 60 participants selected by convenience sampling, who were randomly divided into two experimental groups (BA and ACT) and a control group (n = 20 per group). Data were analyzed using Statistical Package for the Social Sciences (SPSS) version 27.0 with descriptive and inferential statistics, such as mean, standard deviation, and multivariate analysis of covariance (MANCOVA). RESULTS: The results of both BA and ACT were effective in reducing depression (P < 0.01) and rumination (P < 0.01) in the two experimental groups compared with the control group in the posttest phase. Furthermore, the effectiveness of the ACT in reducing depression and rumination was found to be more significant than the effectiveness of BA (P ≤ 0.05). CONCLUSION: The findings of the study suggest that both BA and ACT are effective in reducing depression and rumination in the research participants. However, the study also found that ACT was more effective than BA in reducing depression and rumination. Thus, both approaches can be used to strengthen treatment interventions to lessen depression and rumination in the research participants.

Mind wandering, poor sleep, and negative affect: a threefold vicious cycle?

Mind wandering (MW) is intricately linked to sleep and affect, bearing clinical relevance for various psychiatric conditions, notably attention deficit/hyperactivity disorder, depression, and anxiety disorders. Most reviews concur that the relationship between disturbed sleep and negative affect is bidirectional. The directional relationships between MW propensity and disturbed sleep, as well as MW propensity and negative affect, are less clear. Therefore, this brief review aims to examine the limited studies that have directly explored temporally sequential relationships. These studies provide clear evidence for an impact of affect on MW and of MW on sleep, along with less unequivocal evidence for an influence of MW on affect and sleep on MW. Collectively, these individual reinforcement loops may constitute a threefold vicious cycle, which may contribute to the development and perpetuation of psychiatric disorders. Available data convincingly suggest an impact cycle in the direction "MW propensity → disturbed sleep → negative affect → MW propensity," while evidence for the inverse impact cycle is less pronounced.

Self-concealment is associated with brooding, but not with reflection: relationship between self-concealment and rumination among older adults.

BACKGROUND: Previous research found that self-concealment was associated with rumination in younger adults. However, no study had investigated the relationship between self-concealment and rumination in older adults. Hence, this study aimed to investigate the relationship between self-concealment and the two subfactors of rumination: brooding and reflection, in older adults. METHODS: In this study, we investigated the relationship between self-concealment and rumination in older adults. Considering that rumination has two subfactors: brooding, which reflects the more maladaptive aspects of rumination; and reflection, which reflects the more adaptive aspects of rumination, we separately investigated the relationship between self-concealment and the two subfactors of rumination. RESULTS: We found that after controlling for other potentially relevant variables and the interrelationship between these two subfactors, self-concealment was associated with brooding, but not with reflection. CONCLUSIONS: Self-concealment was only associated with the maladaptive aspect of rumination (i.e. brooding), and not with the adaptive aspects of rumination (i.e. reflection). These findings have important implications for enhancing the understanding of older adults' mental health, and imply that improving self-concealment could potentially mitigate the maladaptive aspects of rumination, which may offer valuable insights for guiding future psychogeriatrics interventions.

A New Approach to Recording Rumination Behavior in Dairy Cows.

Rumination behavior in cattle can provide valuable information for monitoring health status and animal welfare, but continuous monitoring is essential to detect changes in rumination behavior. In a previous study validating the use of a respiration rate sensor equipped with a triaxial accelerometer, the regurgitation process was also clearly visible in the pressure and accelerometer data. The aim of the present study, therefore, was to measure the individual lengths of rumination cycles and to validate whether the sensor data showed the same number of regurgitations as those counted visually (video or direct observation). For this purpose, 19 Holstein Friesian cows equipped with a respiration rate sensor were observed for two years, with a focus on rumination behavior. The results showed a mean duration of 59.27 ± 9.01 s (mean ± SD) per rumination cycle and good agreement (sensitivity: 99.1-100%, specificity: 87.8-95%) between the two methods (sensor and visual observations). However, the frequency of data streaming (continuously or every 30 s) from the sensor to the data storage system strongly influenced the classification performance. In the future, an algorithm and a data cache will be integrated into the sensor to provide rumination time as an additional output.

Social media ostracism and creativity: moderating role of emotional intelligence.

The goal of this study is to learn more about social media ostracism, a stressor associated with online social networks, defined by feelings of rejection, exclusion, or ignoring. We investigate the connection between social media ostracism and worker creativity. We suggest that psychological safety and psychological rumination serve as intermediaries in this relationship. Furthermore, we investigate emotional intelligence as a relationship regulator. To verify our hypothesis, we gathered data with the help of the HR department from 244 workers of nine Chinese organizations. Our research shows that psychological rumination and social media exclusion are significantly correlated, but only in workers with low emotional intelligence. Furthermore, for individuals with strong emotional intelligence, we did not discover a statistically negative association between psychological safety and social media exclusion. Findings suggest that psychological safety and psychological rumination serve as mediating factors in the relationship between employee creativity and social media exclusion. This study illuminates the negative aspects of social media ostracism and reveals how it might hinder creativity. It also emphasizes how emotional intelligence functions as a moderator. Organizations may learn a lot from this study on how to lessen the negative impacts of social media exclusion on employee creativity.

Induced ruminative and mindful self-focus in daily life across the menstrual cycle in women with and without premenstrual dysphoric disorder.

Rumination and mindfulness are transdiagnostic risk and protective factors while their role in Premenstrual Dysphoric Disorder (PMDD) is unclear. Thus, we aimed to investigate the cycle-phase-specific effects of rumination and mindful self-focus on momentary mood and cognitions in women with and without PMDD. This study involved brief ambulatory inductions of ruminative and mindful self-focus along with ambulatory assessments of negative (NA) and positive affect (PA), and rumination, present-moment-awareness (PMA) and self-acceptance on two days during both the follicular and late luteal phase in women with and without PMDD (n = 60 each). Compared to healthy controls, women with PMDD showed stronger increases in PA in response to mindful self-focus inductions during the late luteal phase, whereas no such group differences were identified during the follicular phase. Independent of clinical status and cycle phase, induced ruminative self-focus immediately increased momentary NA and rumination and decreased PMA, whereas induced mindful self-focus inductions increased momentary self-acceptance. Overall, higher PA-reactivity toward mindful self-focusing during late luteal phase in women with PMDD points to the potential of cycle-phase-specific mindfulness interventions for PMDD. Irrespective of cycle phase, rumination and mindfulness appear to represent targets for brief prevention and intervention measures for both non-clinical and clinical groups.

Predictors of psychosocial impairment in a transdiagnostic sample: Unique effects of repetitive negative thinking.

BACKGROUND: Repetitive negative thinking (RNT) is a transdiagnostic process involving perseverative, unproductive, and uncontrollable thoughts. Although RNT may impede adaptive psychosocial functioning by prolonging negative mood states, strengthening cognitive biases, and preventing effective problem-solving, the extent to which RNT is associated with risk for poor psychosocial outcomes is unclear. Given that this has clear transdiagnostic treatment implications, the present study aimed to isolate the unique relationship of RNT with social functioning and life satisfaction in a mixed clinical and non-clinical sample. METHODS: In 201 mid-to-later life adult participants (27 with primary diagnoses of bipolar disorder, 84 with major depressive disorder, and 90 healthy volunteers), we measured RNT, social functioning, life satisfaction, trait rumination, DSM-5 diagnoses, depressive symptoms, manic symptoms, cognitive control performance, and global cognitive functioning. RESULTS: Linear regression models revealed that RNT, but not rumination, was significantly associated with poorer social functioning (ß = 0.42 p < .001) and reduced life satisfaction (ß = -0.42, p < .001) after controlling for clinical and cognitive covariates. LIMITATIONS: Limited demographic diversity, cross-sectional design, self-reporting of outcomes. CONCLUSIONS: Results suggest that RNT may confer risk for key psychosocial outcomes during middle to later adulthood, over and above the effects of clinical and cognitive variables and independent of diagnostic status. Findings lend support to the notion of RNT as a transdiagnostic process and suggest that RNT may be an important therapeutic target for adults with poor social functioning and/or reduced life satisfaction.

Brain mechanisms of rumination and negative self-referential processing in adolescent depression.

BACKGROUND: Depression is linked to cognitive biases towards more negative and less positive self-relevant information. Rumination, perseverative negative thinking about the past and the self, may contribute to these biases. METHODS: 159 adolescents (12-18 years), with a range of depression symptoms, completed the SRET during fMRI. Multiple regressions tested associations between conventional self-report and ecological momentary assessment (EMA) measured rumination, and neural and behavioral responses during a self-referent encoding task (SRET). RESULTS: Higher rumination (conventional self-report and EMA) was associated with more negative and fewer positive words endorsed and recalled. Higher self-reported (but not EMA) rumination was associated with higher accuracy in recognizing negative words and greater insula and dorsal anterior cingulate activity to negative versus positive words. LIMITATIONS: The sample included mostly non-Hispanic White participants with household incomes above the national average, highlighting the need for replication in more diverse samples. Word endorsement discrepancies required fMRI analyses to model neural response to viewing negative versus positive words. CONCLUSIONS: Adolescents with higher rumination endorsed and recalled more negative and fewer positive words and recognized more negative words during the SRET. Higher insula reactivity, a key region for modulating externally-oriented attention and internally-oriented self-referential processes, may contribute to links between rumination and negative memory biases. These findings provide insight into neurocognitive mechanisms underlying depression.

Stress, repetitive negative thinking, and mental health in Chilean university students: an ecological momentary assessment study.

Background: Mental disorders in university students are a growing attention problem in the international community due to their high prevalence and serious consequences. One possible reason is university students' difficulties in coping with stress. Repetitive negative thinking (RNT) is a transdiagnostic process that, when combined with stress, can lead to the development of various disorders. We aim to determine the effect of stress and RNT on predicting various mental health syndromes in university students across 7 days. Method: Prospective observational study using Momentary Ecological Assessment (EMA) with the OURMIND Mobile App. On day one, 238 university students responded to the SCL-90R questionnaire for symptoms of depression, anxiety, hostility, obsession, psychoticism, paranoia, somatization, and interpersonal sensitivity; RNT styles questionnaires, RRS for rumination and negative reflection, PSWQ for worry; SISCO-II for term academic stress, and sociodemographic. EMA consisted of five assessments a day for 6 days; each time, the students answered items about academic and non-academic stress (EMA-stress), reactive RNT duration and intrusiveness (EMA-RNT process), and reactive RNT rumination, reflection, and worry (EMA-RNT content). On day eight, symptoms were re-assessed. Seven hierarchical stepwise linear regression models were used to test the predictive power of the study variables in the development of SCL-90R symptoms. Results: When comparing models, adding baseline symptoms increased the models' predictive power in all symptom groups. In most cases, including EMA-stress generated greater predictive power, except for paranoia and interpersonal sensitivity. Adding the EMA-RNT process increased the prediction of paranoia and obsessive symptoms; for hostility symptoms, RNT styles increased predictive power. For the final regression models, considering the initial symptoms, the EMA-RNT process predicted the progression of symptoms in six out of eight groups, while EMA-non-academic stress predicted the remaining two. Additionally, living with other relatives or friends was a predictor of depressive symptoms. Discussion: The stress of university life impacts the development of psychiatric symptoms in university students. These results provide evidence of RNT as a transdiagnostic process in several syndromic groups. Universal preventive programs should consider the impact of academic and non-academic stress on university students' mental health. Targeting RNT would also benefit selective preventive interventions.

When talking goes awry: association between co-rumination and trait anxiety, test anxiety, and anxiety sensitivity in early and late adolescents.

BACKGROUND AND OBJECTIVES: Friends are major sources of social support for adolescents. This support may sometimes lead to co-rumination when the problem is discussed exhaustively with a focus on negative feelings. Co-rumination has been associated with some forms of anxiety, including clinical symptoms. Further studies are needed to investigate whether this association extends to additional and non-clinical forms of anxiety in youth. This study aimed to explore the relationship between co-rumination and trait anxiety, test anxiety, and anxiety sensitivity using secondary data. DESIGN AND METHODS: In this 2019 cross-sectional study, 1204 (59% girls) Canadian 6th-grade early adolescents (ages 11-12) and 11th-grade late adolescents (ages 16-17) completed self-report questionnaires measuring co-rumination, trait anxiety, test anxiety, and anxiety sensitivity. RESULTS: Co-rumination was associated with anxiety sensitivity in early adolescents and with trait anxiety, test anxiety, and anxiety sensitivity in late adolescents. CONCLUSIONS: Developmental factors may play a role in the association between co-rumination and different forms of anxiety. Anxiety sensitivity may appear alongside co-rumination in early adolescence and may broaden to trait and test anxiety in late adolescence. These results extend our understanding of the relationship between co-rumination and anxiety, as well as generate hypotheses for future longitudinal studies.

The chain mediating role of rumination and social withdrawal in the relationship between smartphone distraction and depression among Chinese nursing students.

Smartphone distraction (SD) is closely related to depression, and the prevalence of SD among nursing students is gradually increasing. However, the potential mechanism of the effect of SD on nursing students' depression is unclear. A total of 574 nursing students were assessed using Smartphone Distraction Scale, Ruminative Response Scale, Hikikomori Questionnaire, and Patient Health Questionnaire-9. The results indicated that SD among nursing students had an impact on depression through four pathways: (1) SD was positively associated with depression (ß = 0.353, P < 0.001); (2) Rumination (ß = 0.199, 95% CI: 0.081 to 0.162) and social withdrawal (ß = 0.061, 95% CI: 0.034 to 0.091) mediated the effects of SD on depression, respectively; and (3) Rumination and social withdrawal played a chain mediating role in the effect of SD on nursing students' depression (ß = 0.027, 95% CI: 0.015 to 0.042). The negative impact of SD on nursing students' mental health should not be taken lightly. Schools and hospitals should guide nursing students to use smartphones correctly, including providing mental health education and professional psychological counselling; families could play a supervisory role and communicate regularly to understand the psychological state and learning of nursing students. These measures can help nursing students cope with stress and reduce the risk of depression.

Ruminative Variability Predicts Increases in Depression and Social Anxiety.

Background: Rumination is a well-established contributor to the severity of depression and anxiety. It is unknown, however, whether individual differences in the temporal dynamics of rumination over time predict longitudinal increases in depression or anxiety. Methods: The current study examined whether the dynamic indices of ruminative inertia and variability assessed over 14 days via ecological momentary assessment predicted change in symptoms of depression, general anxiety, and social anxiety at a 90-day follow-up (n = 115). Results: Controlling for ruminative variability, baseline levels of the dependent variable, sex, and mean levels of momentary rumination, ruminative inertia did not predict change in symptoms of depression, general anxiety, or social anxiety at the 90-day follow-up. In contrast, greater ruminative variability predicted increases in symptoms of both depression and social anxiety but not general anxiety at follow-up. Individuals endorsing higher baseline levels of depressive symptoms demonstrated greater amounts of inertia and variability in their momentary rumination. Greater ruminative variability but not inertia was also associated with higher baseline levels of general anxiety and social anxiety. Conclusions: These results suggest that ruminative variability may be a risk factor for increases in symptoms of depression and social anxiety over time and a potentially useful target for clinical intervention.

Delay in diagnosis is associated with decreased treatment effectiveness in children with rumination syndrome.

OBJECTIVES: Rumination syndrome (RS) is challenging to diagnose, which can lead to diagnostic delays. Our objective was to evaluate the length of time from RS symptom onset to diagnosis in patients referred to our institution and to examine whether this duration predicts treatment outcomes. METHODS: We conducted a review of patients with RS evaluated at our institution. Data were collected from chart review and patient/family reported questionnaires. We evaluated the time from symptom onset to diagnosis over time and whether it was associated with symptom resolution. RESULTS: We included 247 patients with RS (60% female, median age of 14 years, interquartile range [IQR]: 9-16 years). The median age at symptom onset was 11 years (IQR: 5-14 years) and median age at diagnosis was 13 years (IQR: 9-15 years) for a median duration of 1 year (IQR: 0-3 years) between symptom onset and diagnosis. Length of time between symptom onset and diagnosis did not change significantly at our institution from 2016 to 2022. Among the 164 children with outcome data, 47 (29%) met criteria for symptom resolution after treatment. A longer time to diagnosis was associated with a lower likelihood of symptom resolution after treatment (p = 0.01). CONCLUSION: In our experience, the time to RS diagnosis after symptom onset is shorter than previously described. A longer delay in diagnosis is associated with lower likelihood of symptom resolution after treatment, emphasizing the importance of a prompt recognition of rumination symptoms and a timely diagnosis.

From Tripping and Falling to Ruminating and Worrying: A Meta-Control Account of Repetitive Negative Thinking.

Repetitive negative thinking (RNT) is a transdiagnostic construct that encompasses rumination and worry, yet what precisely is shared between rumination and worry is unclear. To clarify this, we develop a meta-control account of RNT. Meta-control refers to the reinforcement and control of mental behavior via similar computations as reinforce and control motor behavior. We propose rumination and worry are coarse terms for failure in meta-control, just as tripping and falling are coarse terms for failure in motor control. We delineate four meta-control stages and risk factors increasing the chance of failure at each, including open-ended thoughts (stage 1), individual differences influencing subgoal execution (stage 2) and switching (stage 3), and challenges inherent to learning adaptive mental behavior (stage 4). Distinguishing these stages therefore elucidates diverse processes that lead to the same behavior of excessive RNT. Our account also subsumes prominent clinical accounts of RNT into a computational cognitive neuroscience framework.

Neuroticism affects nightmare distress through rumination.

BACKGROUND/AIMS: The role of neuroticism in predicting nightmare distress have been highlighted, and negative coping style may contribute to this relationship, but how these variables interact is limited. The present study aimed to explore how neuroticism and ruminative response contribute to producing nightmare distress, and to explore whether sex influences this relationship. METHODS: We recruited 758 university students, aged an average of 19.07. A moderated mediation model was built to examine the relationships among neuroticism, rumination, and nightmare distress (measured by dream anxiety scale), and explore whether sex could affect this relationship, using the SPSS PROCESS 3.5 macro. RESULTS: The moderated mediation analyses results showed that ruminative response-depression related can significantly partially mediate the relationship between neuroticism and dream anxiety (ß = 0.32), dream anxiety-sleep-related disturbances (ß = 0.11) and dream anxiety-daytime dysfunctions (ß = 0.21). However, the moderating effects of sex were not significant in all path from neuroticism to dream anxiety. CONCLUSION: The study provides a novel architecture on the underlying psychological mechanisms of neuroticism and nightmare distress. This interplay is assumed to be facilitated by ruminations, suggesting that interventions for individuals who suffer from nightmares may focus on their repetitive negative response strategies, especially in people with high neuroticism, irrespective of sex differences.

Decision-Making, Pro-variance Biases and Mood-Related Traits.

In value-based decision-making there is wide behavioural variability in how individuals respond to uncertainty. Maladaptive responses to uncertainty have been linked to a vulnerability to mental illness, for example, between risk aversion and affective disorders. Here, we examine individual differences in risk sensitivity when subjects confront options drawn from different value distributions, where these embody the same or different means and variances. In simulations, we show that a model that learns a distribution using Bayes' rule and reads out different parts of the distribution under the influence of a risk-sensitive parameter (Conditional Value at Risk, CVaR) predicts how likely an agent is to prefer a broader over a narrow distribution (pro-variance bias/risk-seeking) under the same overall means. Using empirical data, we show that CVaR estimates correlate with participants' pro-variance biases better than a range of alternative parameters derived from other models. Importantly, across two independent samples, CVaR estimates and participants' pro-variance bias negatively correlated with trait rumination, a common trait in depression and anxiety. We conclude that a Bayesian-CVaR model captures individual differences in sensitivity to variance in value distributions and task-independent trait dispositions linked to affective disorders.