Psychosocial correlates of depressive rumination

The study examined the relationship between brooding, the maladaptive sub-component of depressive rumination, an important cognitive mechanism implicated in the aetiology of depression, and a range of depressogenic psychosocial factors, including insecure attachment styles and maladaptive interpersonal behaviours. It was hypothesised that brooding (but not the more adaptive reflection component) is associated with an attachment pattern characterised by fear of rejection, and an interpersonal style characterised by submissiveness. Currently depressed (n = 29), previously depressed (n = 42) and never-depressed (n = 32) adults completed self-report measures assessing depressive symptoms, rumination (brooding and reflection), attachment orientation and maladaptive interpersonal behaviours. The study hypotheses were partially supported: After controlling for gender and depressive symptoms, brooding was significantly associated with one indicator of underlying rejection concerns (rejection sensitivity, p = .05), but was not associated with another indicator of underlying rejection concerns (anxious attachment style) or with avoidant attachment style. After controlling for depressive symptoms, brooding was uniquely associated with the submissive interpersonal style (p < .01). Brooding was not correlated with needy or cold interpersonal styles after controlling for depressive symptoms.     

Partial replication of two rumination-related candidate gene studies

Two recent papers associated candidate genes with brooding rumination, a possible cognitive endophenotype for depression, in children ages 8–14 years. Stone et al. reported that BDNF val66met polymorphism predicted brooding in adolescence. Woody et al. reported that children carrying at least one copy of a CRHR1 TAT haplotype reported less brooding than their peers in the presence of maternal depression. We attempted to replicate and extend these findings in a sample of twins aged 12–16 years. We analyzed the BDNF val66met (rs6265) polymorphism and two (rs242924 and rs7209436) out of three single nucleotide polymorphisms (SNPs) that Woody et al. used to create a CRHR1 haplotype. We controlled for maternal history of depression and clustering within families. Unlike Stone et al., we found higher brooding among BDNF Met carriers. This main effect was qualified by an interaction with pubertal status, with the effect driven by more physically mature participants. Similar to Woody et al., we found an interaction between CRHR1 SNPs and maternal depression, with the homozygous minor genotype acting as a protective factor against brooding in the presence of maternal depression. Findings provide partial support for the influence of candidate genes in two environmentally sensitive systems on brooding.     

Specificity of parental bonding and rumination in depressive and anxious emotional distress

We examined how different dimensions of rumination may mediate the impact of parental bonding (lack of care and overprotectiveness) on negative emotional symptomatology (anxiety and depression). Survey data from participants were analyzed using structural equation modeling. Results indicated that brooding rumination fully mediated the relationship between maternal care and depressive and anxious symptomatology. These findings suggest that to the extent that maternal caregivers are low in warmth and support, offspring are more likely to develop a brooding style of ruminative thinking associated with heightened emotional distress. This research supports the growing body of evidence suggesting that cognitive variables form a pathway between troublesome parent/child interactions and psychopathology.     

Associations between components of rumination and autobiographical memory specificity as measured by a Minimal Instructions Autobiographical Memory Test

Clinical studies have shown that rumination functions as a mediator between overgeneral memory—the tendency to retrieve autobiographical memories in a non-specific format—and depression. Recently, rumination has been dismantled into two distinct subcomponents: reflection, which is more adaptive, and brooding, which is more maladaptive. In the present study we examined the differential relationships of these two rumination subcomponents with autobiographical memory specificity and their mediational role for the relationship between reduced memory specificity and depression in a non-clinical sample. In addition, we investigated the usefulness of a “minimal instructions” version of the Autobiographical Memory Test (AMT) to measure memory specificity in non-clinical populations. Results indicated that the use of minimal instructions can increase the AMT's sensitivity to detect reduced autobiographical memory specificity in non-clinical individuals. Further it was found that brooding, and not reflection, is significantly associated with reduced autobiographical memory specificity and functions as a mediator between reduced memory specificity and depression.     

Brooding rumination and attentional biases in currently non-depressed individuals: an eye-tracking study

Both rumination and attentional biases have been proposed as key components of the RDoC Negative Valence Systems construct of Loss. Although theorists have proposed that rumination, particularly brooding rumination, should be associated with increased sustained attention to depression-relevant information, it is not clear whether this link would be observed in a non-depressed sample or whether it is specific to brooding versus reflective rumination. To address these questions, the current study examined the link between brooding rumination and attentional biases in a sample of non-depressed individuals (n?=?105). Attentional biases were assessed using eye tracking during a passive viewing task in which participants were presented with 2?×?2 arrays of angry, happy, sad, and neutral faces. In line with predictions, higher levels of brooding rumination were associated with greater sustained attention to sad faces and less sustained attention to happy faces. These results remained significant after controlling for participants’ prior history of major depression and current nonclinical level of depressive symptoms, suggesting that the link between brooding rumination and attentional biases is at least partially independent of current or past depression.     

Multidimensional Perfectionism and Ruminative Brooding in Current Dysphoria,Anxiety, Worry,and Anger

The current study examined links between dimensions of perfectionism, ruminative and distractive coping, and multiple measures of current distress (dysphoria, anxiety, worry, and anger) in 205 university students. A main goal was to test the hypothesis that perfectionism is related to a new measure of the critical maladaptive component of rumination (i.e., ruminative brooding) that is not confounded with symptoms and confirm that both constructs function as non-specific vulnerabilities for emotional distress. Our study revealed numerous significant findings, including: (1) socially prescribed perfectionism (SPP) was the dimension most strongly related to brooding in response to depression and anxiety; (2) SPP, self-oriented perfectionism (SOP), and brooding predicted various indices of distress; (3) SOP predicted anxiety and worry in women, and it predicted dysphoria and anger in men; (4) despite the strong associations between ruminative brooding and distress, perfectionism still accounted for unique variance in distress, and vice-versa. Implications for the issue of the adaptiveness versus maladaptiveness of perfectionism and for counseling perfectionists who fall into the “brooding trap” are discussed.

Dampening and brooding jointly link temperament with depressive symptoms: A prospective study

Integrated affective-cognitive models of depression suggest that the effects of trait temperament (low positive affectivity (PA) and high negative affectivity (NA)) on depressive symptoms may be mediated by maladaptive cognitive strategies. Research and theory suggest that the effect of NA on depression is mediated by brooding and the effect of PA on depression is mediated by dampening. Despite correlations among these constructs, no studies have examined joint contributions of PA, NA, brooding, and dampening on depression. The present study examined the effects of NA and PA on prospective increases in depressive symptoms, and whether effects were mediated by brooding and dampening. Hypotheses were tested in an eight-week study of 333 young adults; depressive symptoms were assessed at weeks one and eight. Participants reported their use of dampening and brooding in response to ideographically identified weekly events in weeks two through seven. Results suggest that the effect of PA on increases in depressive symptoms was mediated by use of dampening and the effect of NA on increases in depressive symptoms was mediated by use of both brooding and dampening. Future research should consider temperament traits and cognitive strategies jointly to understand the development and maintenance of depression.     

Rumination and suicidal ideation: The moderating roles of hope and optimism

The current study aimed to investigate whether the correlation between rumination and suicidal ideation is moderated by the presence of hope and optimism. It was hypothesized that both hope and optimism would moderate (weaken) the relationship between rumination and suicidal ideation. Two hundred and ninety-eight participants completed self-report measures of hope, optimism, rumination (brooding and reflection), and depression. Results demonstrated that both hope and optimism weakened the relationship between rumination and suicidal ideation, as well as the relationships between both subscales of rumination and suicidal thinking. These results were found when controlling for symptoms of depression. Results suggest that a ruminative thinking style may be most harmful when an absence of hope or optimism is also present.     

Rumination,emotional intensity and emotional clarity

It has been suggested that a high tendency to ruminate presents a deficient emotion regulation. Past research found that people with high tendency to ruminate show sustained attention for negative stimuli and increased negative thinking, which may result in intensified experiences of negative emotions. Moreover, high level of rumination was associated with low emotional understanding. Accordingly, we hypothesized (1) high ruminators (HR) experience more intense emotional reactions than low ruminators (LR) for negative but not positive emotions, (2) LR have higher emotional clarity than HR, and (3) there would be the same pattern of results for brooding but not for reflective pondering. Participants completed a demographic questionnaire, a rumination response style questionnaire, and the Beck Depression Inventory-II. They also rated emotional intensity and identified emotion type for scene pictures from the CAP-D (Categorized Affective Pictures Database). The highest (HR) and lowest (LR) quarters of ruminators were compared on levels of emotional intensity and emotional clarity. We found HR experienced negative emotions more intensely than LR, with no difference for positive emotions. In contrast to our hypothesis, the two groups did not differ in their emotion understanding. This pattern of results was found for brooding but not for reflective pondering. Our research sheds light on the mechanism underlying rumination and emotion regulation.     

Gender differences in rumination: A meta-analysis

Starting in adolescence and continuing through adulthood, women are twice as likely as men to experience depression. According to the response styles theory (RST), gender differences in depression result, in part, from women’s tendency to ruminate more than men. A meta-analysis was performed to evaluate gender differences in rumination in adults (k = 59; N = 14,321); additionally, an analysis of subtypes of rumination – brooding and reflection – was conducted (k = 23). Fixed effects analyses indicated that women scored higher than men in rumination (d = .24, p < .01, SEd = .02), brooding (d = .19, p < .01, SEd = .03) and reflection (d = .17, p < .01, SEd = .03); there was no evidence of heterogeneity or publication bias across studies for these effect sizes. Although statistically significant, the effect sizes for gender differences in rumination were small in magnitude. Results are discussed with respect to the RST and gender differences in depression.