Memory accessibility, mood regulation, and dysphoria: difficulties in repairing sad mood with happy memories?

Recent studies have suggested that mood-incongruency effects are due to mood-regulatory processes, in which people retrieve positive memories to repair negative moods. In Study 1, the authors investigated whether dysphoria influences the accessibility of autobiographical memories following a positive or a negative mood induction combined with subsequent rumination or distraction. The results showed a mood-repair effect for nondysphoric but not for dysphoric participants following rumination. In Study 2, participants were asked to either distract themselves or to recall positive autobiographical memories after a negative mood induction. Whereas nondysphoric participants' mood improved under both conditions, dysphoric participants' mood improved only after distraction. These results suggest that dysphoria is associated with a reduced ability to use mood-incongruent recall to repair sad moods.     

Autobiographical memory characteristics in depression vulnerability: formerly depressed individuals recall less vivid positive memories

The differential activation hypothesis (DAH; Teasdale, 1988) proposes that individuals who are vulnerable to depression can be distinguished from non-vulnerable individuals by the degree to which negative thoughts and maladaptive cognitive processes are activated during sad mood. While retrieval of negative autobiographical memories is noted as one such process, the model does not articulate a role for deficits in recalling positive memories. Two studies were conducted to compare the autobiographical memory characteristics of never-depressed and formerly depressed individuals following a sad mood induction. In Study 1, features of negative memories of never-depressed and formerly depressed individuals did not differ, either in neutral or sad mood. For positive memories, groups did not differ in neutral mood, but following a sad mood induction, formerly depressed individuals rated their positive memories as less vivid than their never-depressed counterparts. Study 2 examined positive autobiographical memory features more comprehensively and replicated the finding that in a sad mood formerly depressed individuals recalled less vivid positive memories than never-depressed controls. These findings suggest that the phenomenological features of positive memories could represent an important factor in depressive vulnerability, and, more broadly, that depression may be associated with a deficit in the processing of positive material.     

Autobiographical memory characteristics in depression vulnerability: Formerly depressed individuals recall less vivid positive memories

The differential activation hypothesis (DAH; Teasdale, 1988) proposes that individuals who are vulnerable to depression can be distinguished from non-vulnerable individuals by the degree to which negative thoughts and maladaptive cognitive processes are activated during sad mood. While retrieval of negative autobiographical memories is noted as one such process, the model does not articulate a role for deficits in recalling positive memories. Two studies were conducted to compare the autobiographical memory characteristics of never-depressed and formerly depressed individuals following a sad mood induction. In Study 1, features of negative memories of never-depressed and formerly depressed individuals did not differ, either in neutral or sad mood. For positive memories, groups did not differ in neutral mood, but following a sad mood induction, formerly depressed individuals rated their positive memories as less vivid than their never-depressed counterparts. Study 2 examined positive autobiographical memory features more comprehensively and replicated the finding that in a sad mood formerly depressed individuals recalled less vivid positive memories than never-depressed controls. These findings suggest that the phenomenological features of positive memories could represent an important factor in depressive vulnerability, and, more broadly, that depression may be associated with a deficit in the processing of positive material.     

Negative cognitive response to a sad mood induction: Associations with polymorphisms of the serotonin transporter (5-HTTLPR) gene

Increased negative thinking in response to sad mood states has been identified as a marker of depression risk. The present study examined whether polymorphisms of the serotonin transporter (5-HTTLPR) gene were associated with the tendency to endorse negative cognition after sad or neutral mood inductions in a healthy college student sample. Non-depressed participants were genotyped for the 5-HTTLPR and then viewed films designed to elicit a sad mood (n=30) or a neutral mood (n=23). Analyses indicated that individuals homozygous for the short 5-HTTLPR allele endorsed more negative cognition following a sad mood induction than individuals homozygous for the long 5-HTTLPR allele. Negative cognition did not vary as a function of 5-HTTLPR genetic status in the neutral mood condition. These preliminary results suggest that genetic variation of the serotonin transporter may contribute to depression vulnerability via a tendency to think more negatively in response to events that elicit sad mood.     

Rumination, distraction, and mindful self-focus in depressed patients

Rumination has been proposed as a cognitive risk factor for the onset and maintenance of depression. In parallel, mindfulness interventions have shown to reduce the risk for recurrence of depressive episodes. This study aimed to investigate effects of short periods of induced rumination, distraction, and mindful self-focus on sad mood in depressed patients and to assess possible moderator effects of habitual variables on respective mood changes. Seventy-six depressed patients 3.5 years after discharge from inpatient treatment were subjected to negative mood induction and subsequently randomly assigned to a rumination, distraction, or mindful self-focus induction. Habitual aspects of rumination, distraction, and mindfulness were assessed by questionnaires. Compared to rumination, the induction of a mindful self-focus and of distraction showed clear beneficial effects on the course of negative mood. While habitual distraction predicted better mood outcomes across all conditions, patients high in habitual mindfulness tended to show stronger negative mood reduction specifically after the induction of a mindful self-focus. This study indicates that - similar to distraction - an experimentally induced mindful self-focus is able to reduce negative mood in depressed patients. Implications regarding possible subgroups of patients who might particularly benefit from mindfulness-based interventions are discussed.     

The Interaction of Mood and Rumination in Depression: Effects on Mood Maintenance and Mood-Congruent Autobiographical Memory

Rumination is a response to distress in which individuals focus repetitively on their feelings and the causes and consequences of those feelings. When induced to ruminate, dysphorics exhibit more negative mood and recall more negative memories, but these effects are not seen in nondysphorics. This pattern of results could be due to trait-like differences between dysphoric and nondysphoric individuals, or to the high levels of negative affect that dysphorics are experiencing at the time of rumination. The purpose of this study was to evaluate the effects of pre-rumination mood on post-rumination mood and subsequent memory. Participants scoring high or low in depressive symptoms were assigned to either a positive or negative emotion induction prior to ruminating and completing an autobiographical memory task. Analysis of self-reported mood indicates that both emotion inductions were effective. Surprisingly, all participants returned to baseline mood levels following the rumination induction, and emotion induction had no effect on the negativity of the memories recalled. Dysphorics recalled significantly more negative memories than nondysphorics, regardless of whether positive, neutral, or negative memories were specifically prompted. Our results indicated that the prolonged experience of dysphoria may have greater effects on post-rumination mood and memory than the transitory experience of sadness.     

The Effects of Sad Mood on Reports of Parents’ Caregiving Behaviors

Two studies examined the hypothesis that recollections of parents’ child-rearing behaviors on the Parental Bonding Instrument (PBI: Parker, Tupling, & Brown, 1979) are influenced by current mood. Study 1 investigated the effects of sad versus neutral mood induction on PBI scores in 50 college students. Participants rated their parents as less caring following the sad mood induction than following the neutral induction. Study 2 investigated the effects of naturally occurring changes in depressive symptoms on PBI scores over a two month period. Changes in depressive symptoms correlated with changes in father care scores and tended to correlate with changes in mother care scores. Findings from both studies suggest that retrospective reports of parenting are susceptible to mood bias and highlight the limits of using cross sectional designs to explore the relationship between parenting and depression.     

Time-course of attention to negative stimuli: Negative affectivity, anxiety, or dysphoria?

Although biased attention to emotional stimuli is considered a vulnerability factor for anxiety and dysphoria, research has infrequently related such attentional biases to dimensional models of vulnerability for anxiety and mood disorders. In two studies (Study 1, n = 64; Study 2, n = 168), we evaluate the differential associations of general negative affectivity, anxiety, and dysphoria with biases in selective attention among nonclinical participants selected to vary in both anxiety and dysphoria. Across both studies, preferential processing of angry faces at a 300-ms exposure duration was associated with a general tendency to experience a range of negative affect, rather than being specific to symptoms of either anxiety or dysphoria. In the second study, we found evidence of a suppressor relationship between anxiety and dysphoria in the prediction of delayed attentional biases (1,000 ms) for sad faces. In particular, dysphoria was specifically associated with biased attention toward sad cues, but only after statistically accounting for anxiety; by contrast, anxiety was specifically associated with attentional avoidance of sad cues, but only after statistically accounting for dysphoria. These results suggest that the specificity of relationships between components of negative affectivity and attention to emotional stimuli varies as a function of the time course at which attentional biases are assessed, highlighting the importance of evaluating both anxiety and dysphoria in research on attentional processing of emotional stimuli. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

Getting Out of Rumination: Comparison of Three Brief Interventions in a Sample of Youth

Rumination, passively and repetitively dwelling on and questioning negative feelings in response to distress, is a risk factor for the development of psychopathology, especially depression. The ruminative process is difficult to stop once it has begun. The present studies focused on strategies that may help youth disengage from ruminative states. In Study 1, we validated a technique for inducing distress and measuring state rumination. Twenty-six participants (mean age?=?12.21; 62?% girls) underwent a negative mood induction followed by either a rumination or distraction induction. In Study 2, we examined the utility of three different brief interventions for stopping the ruminative process. One hundred-two youth (mean age?=?11.51; 64?% girls) underwent a negative mood induction followed by a rumination induction. Following this, participants were randomly assigned to one of three conditions designed to help them out of the ruminative state (distraction, problem-solving, or mindfulness). In Study 1, participants in the rumination condition reported significantly higher levels of state rumination compared to those in the distraction condition. In Study 2, both distraction and mindfulness helped reduced state rumination compared to problem-solving. Taken together, these data suggest that even a brief period of distraction or mindfulness is helpful in getting youth out of a ruminative state. Clinical implications might include the potential use of mobile device applications to help alleviate rumination.     

Cognitive vulnerability to depression in never depressed subjects

The purpose of this study was to investigate whether dysfunctional cognitions could be measured in never-depressed individuals after a sad mood prime, and if these dysfunctional cognitions would predict future depression. Subjects were first screened for current or past depression. Never-depressed subjects were randomly assigned to a prime or no-prime condition and completed the Dysfunctional Attitudes Scale. After one month, subjects completed the Beck Depression Inventory. The mood induction was successful in producing a sad mood, but had no effect on accessibility of dysfunctional cognition. Dysfunctional cognitions did predict depressive symptoms one month later, for the women in the sample, but not the men. These results were actually stronger for the unprimed subjects. The results provide some support for the cognitive diathesis-stress model, and suggest that cognitive vulnerability to depression may exist prior to a clinically significant depressive episode. However, mood priming does not appear to be a useful strategy with never-depressed subjects.     

The influence of sad mood on cognition

Neuroimaging has identified an overlapping network of brain regions whose activity is modulated by mood and cognition. Studies of depressed individuals have shown changes in perception, attention, memory, and executive functions. This suggests that mood has a pervasive effect on cognition. Direct evidence of the effect of sad mood on cognition is surprisingly limited, however. Published studies have generally addressed a single cognitive ability per study because the fleeting nature of laboratory-induced mood precludes extended testing, and robust findings are limited to mood effects on memory for emotional stimuli. In this study, sad mood was induced and prolonged, enabling the effects of mood to be assessed for an array of abilities, including those that share neural substrates with sad mood and those affected by depression. Sad mood affected memory for emotional words and facial emotion recognition, but not the other processes measured, with a significant nonuniformity of effect over tasks. These results are consistent with circumscribed effects of sad mood on certain emotion-related cognitive processes, but not on cognition more generally.     

Gaze-fixation and pupil dilation in the processing of emotional faces: The role of rumination

Sustained attentional processing of negative information plays a significant role in the development and maintenance of depression. The present study examines the relationships between rumination, a relevant factor in information processing in depression, and the attentional mechanisms activated in individuals with different levels of depression severity when attending to emotional information (i.e., sad, angry and happy faces). Behavioural and physiological indicators of sustained processing were assessed in 126 participants (39 dysphoric and 87 non-dysphoric) using eye-tracking technology. Pupil dilation and total time attending to negative faces were correlated with a global ruminative style in the total sample once depression severity was controlled. Furthermore, in dysphoric participants the brooding component of rumination was specifically associated with the total time attending to sad faces. Finally, bootstrapping analyses showed that the relationships between global rumination and pupil diameter to emotional faces were accounted by total time attending to emotional faces, specifically for participants reporting lower levels of depression severity. The results support the idea that sustained processing of negative information is associated with a higher ruminative style and indicate differential associations between these factors at different levels of depressive symptomatology.     

Rumination and dysphoria: The buffering role of adaptive forms of humor

The current study examines the effects of rumination and humor on individuals’ dysphoria level. Measures of humor (affiliative and self-enhancing), rumination, and depressive symptoms were completed by 303 undergraduate students. Consistent with our hypothesis, both affiliative humor and rumination independently accounted for variance in dysphoria levels. In addition, self-enhancing humor and rumination were independently associated with dysphoria. Moreover, significant interactions between affiliative humor and rumination, and self-enhancing humor and rumination, on dysphoria also emerged. Results indicated that among individuals with high rumination, those with high affiliative and/or self-enhancing humor had significantly lower levels of dysphoria than individuals with low affiliative and/or self-enhancing humor. The combination of low affiliative and/or self-enhancing humor and high rumination led to substantially higher levels of dysphoria than any other combination. Implications for psychotherapy and research in this area are discussed.     

The Influence of Dysphoria on Reactivity to Naturalistic Fluctuations in Anger

Abstract We used an experience sampling methodology to explore the relationship between current symptoms of dysphoria and momentary mood fluctuations following everyday experiences of anger. Using PDA devices, participants rated their mood, ruminative cognitions, feelings of dependency, and stressful events 4 times per day for 1 week. We hypothesized and found that those higher in dysphoria would demonstrate a stronger link between anger and depressed mood than those who were lower in dysphoria. Those participants who reported higher initial dysphoria indicated more anger over the course of the week, a stronger within-person association between anger and depressed mood, and a slower recovery from anger experiences. Multilevel moderated mediation analyses indicated that the link between anger and depressed mood for those high in dysphoria is largely explained by a stronger carryover of anger from one assessment to the next and partially explained by greater increases in ruminative cognitions and feelings of dependency. The change in depressed mood appears to occur with increases in anger, specifically, and not other negative mood states. Our results extend previous research on the anger–depression relationship by investigating the short-term relationships between anger and depressed mood among those with varying levels of dysphoria.     

Trauma‐related rumination mediates the effect of naturally occurring depressive symptoms but not momentary low mood on trauma intrusions

Comorbid depression is known to contribute to the maintenance of posttraumatic stress disorder (PTSD) including distressing intrusive trauma memories. It is theorised that depression is a risk factor for persistent PTSD through preventing optimal habituation of distress provoked by trauma memories and reminders, but the underlying cognitive mechanisms responsible are uncertain. The present study investigated trauma‐related rumination as a possible mediator for the effect of depression on trauma intrusions. Participants received a low mood induction or control procedure. Following viewing an analogue trauma film, frequency of film‐related intrusions and associated distress levels were measured and at 1‐week follow‐up. Between the two occasions, participants rated their levels of rumination about the film. Existing depression symptoms but not induced momentary sad mood predicted frequency of film intrusions and associated distress at 1‐week follow‐up. Some evidence was found that ruminative trauma processing mediated the relationship between baseline depressive symptoms and later intrusion frequency and associated distress. Future research is warranted to better understand the role of rumination in the depression–intrusion relationship, which may shed light on the clinical applicability of rumination‐targeted intervention for PTSD and comorbid depression.     

An experimental investigation of the cognitive vulnerability to depression

The present study employed an experimental design, to examine the role of metacognitive processing in the prevention of relapse to depression. Eighty remitted depressed participants were randomly allocated to receive training in the metacognitive style of rumination, distraction, acceptance or no training control prior to a negative mood induction. Rumination prolonged the intensity of the negative mood consistent with no training, whereas both distraction and acceptance reduced the intensity of the negative mood. Changes in attitudes were only found in the acceptance condition, as participants in this condition reduced negative attitudes towards negative experiences. These results are consistent with information processing theory, and imply that acceptance-based preventative interventions may operate by both reducing the intensity of sad moods and altering one's attitudes towards temporary moments of sadness.     

Systems of coping associated with dysphoria, anxiety and depressive illness: a multivariate profile perspective

As numerous coping strategies to deal with stressors can be used concurrently or sequentially, it may be productive to consider coping from a broad, systemic perspective. Using profile analysis and multivariate techniques, we demonstrated that coping profiles comprising multiple strategies distinguished between various mood states (dysphoria, anxiety, major depression, dysthymia and obsessive-compulsive disorder (OCD)). Generally, affective disturbances were associated with increased levels of rumination, cognitive distraction and emotion-focused coping (emotional expression, other-blame, self-blame, emotional containment and passive resignation) coupled with diminished problem solving and social support seeking. These coping profiles, however, varied as a function of anxiety vs. dysphoria, and severity of dysphoric symptoms, although the profile of dysphoric individuals was similar to that of clinically diagnosed dysthymic and major depressive patients. While coping profiles were generally stable over time (6 months), improvement or deterioration of mood was accompanied by corresponding alterations of coping profiles. Importantly, coping profile was not simply a correlate of dysphoric mood, but was also found to be an antecedent condition that favored the evolution of more severe affective problems. It is suggested that a multidimensional approach may prove useful in understanding coping as a dynamic system, and may have implications for clinical intervention.     

On assessing individual differences in rumination on sadness

The Rumination on Sadness Scale (RSS), an individual-difference measure of rumination on sadness, was developed as an alternative to the Ruminative Responses scale of the Response Styles Questionnaire (RRRSQ; Nolen-Hoeksema & Morrow, 1991). Research has shown the RRRSQ to consist of multiple, not highly intercorrelated factors; only I factor explicitly addresses rumination. In Study 1, a 1-factor solution to a principal components analysis was shown to hold for responses to the RSS. The RSS was also shown to be reliable. In Study 2, convergent and discriminant validity of the RSS were assessed. In Study 3, individuals with high RSS scores exhibited more distress regarding current concerns with the introduction of a delay period (to allow them to ruminate) after a sad mood induction.     

The effects of worry and rumination on affect states and cognitive activity

The effects of worry and rumination on affective states and mentation type were examined in an unselected undergraduate sample in Study 1 and in a sample of individuals with high trait worry and rumination, high rumination, and low worry/rumination in Study 2. Participants engaged in worry and rumination inductions, counterbalanced in order across participants to assess main and interactive effects of these types of negative thinking. During mentation periods, the thought vs. imaginal nature and the temporal orientation of mentations were assessed 5 times. Following mentation periods, negative and positive affect, relaxation, anxiety, and depression were assessed. Both worry and rumination produced increases in negative affect and decreases in positive affect. Worry tended to generate greater anxiety, and rumination tended to generate greater depression. Interactive effects were also found indicating that worry may lessen the anxiety experienced during subsequent rumination. Moreover, worry lessened the depressing effects of rumination. Worry was associated with significantly greater thought than imagery, compared to rumination. Rumination involved a progression from mentation about the past to mentation about the future over time. Implications for understanding the generation of negative affect and comorbid anxiety and depression are discussed.     

Mood Regulation and Memory: Repairing Sad Moods with Happy Memories

A total of 106 undergraduates participated in a study examining how individuals retrieve memories to repair negative moods. Participants first completed a measure of depression. Two weeks later, participants were assigned to either a sad or neutral mood induction. After mood induction, they recalled two memories, rated their affective responses to the memories, and indicated why they chose the valence and order of the memories. Consistent with mood-congruent recall, participants in the sad condition reported sadder memories than those in the neutral condition. However, participants with prior low depression scores tended to recall more positive second memories, whereas participants with higher prior depression scores recalled consecutive negative memories. Sixty-eight per cent of sad participants who retrieved a negative first and positive second memory mentioned mood repair as motivating the recruitment of the more positive second memory.