Self-schemas and risk for depression: a prospective study

The role of depressive self-schemas in vulnerability to depression was explored in a longitudinal design. Five groups of subjects hypothesized to be at differential risk for depression according to a schema model were identified: depressed schematic, depressed nonschematic, nondepressed schematic, nondepressed nonschematic, and a psychopathology control. They were followed regularly for 4 months with self-report and clinical interview measures of depression. There was no evidence of risk for depression associated with schema status apart from initial mood and no interaction of life stress events and schemas. In a second experiment with the same subjects, it was shown that depressive self-schemas do not exert an ongoing, active influence on everyday information processing; instead current mood affected information processing. Remitted depressed persons resembled nondepressed rather than depressed ones. The results support Kuiper and colleagues' distinction between concomitant and vulnerability schemas, and help to clarify differences between cognitions that are symptoms or correlates of depression and those that may play a causal role under certain conditions.     

Implicit depression and hopelessness in remitted depressed individuals

Cognitive theories of depression posit that automatically activated cognitive schemas, including negative thoughts about the self and the future, predispose individuals to develop depressive disorders. However, prior research has largely examined these constructs using explicit tests in currently depressed individuals. Using the Implicit Association Test (IAT), the present study examined automatic associations between the self and mood state ("depression IAT") and between the future and mood state ("hopelessness IAT") before and after a negative mood induction in 19 remitted depressed individuals and 23 healthy controls. In the depression IAT, remitted depressed participants exhibited an overall lower tendency to associate themselves with happiness relative to the healthy controls before the mood induction. Control, but not remitted depressed, participants' automatic associations between the self and happiness diminished following the mood induction. Contrary to our hypotheses, no significant findings emerged when considering the hopelessness IAT. Consistent with prior studies, no significant correlations emerged between implicit and explicit biases, suggesting that these measures probe different processes. Results extend prior IAT research by documenting the presence of a reduced tendency to associate the self with happiness in a sample at increased risk for depression.     

Self‐confirmation strivings in depression: An extension to the affective domain using an experimental design

The purpose of the present study was to compare the emotional reactions of depressed and nondepressed individuals to experiences of romantic rejection versus acceptance. We tested our hypotheses in a sample of 28 depressed and 43 nondepressed undergraduate students. In support of self‐consistency theories, the results showed that depressed individuals reported significantly greater negative mood in the romantic acceptance versus rejection condition, while there was no significant difference across the two conditions in the self‐reported mood of nondepressed individuals. Further, symptoms of anxiety mediated the interactive effects of depression status and rejection status on mood. Our findings demonstrate how the responses of depressed individuals to interpersonal feedback contribute to their affective disturbance. Copyright © 2009 John Wiley & Sons, Ltd.     

Depression, self-focused attention, and expectancies for positive and negative future life events for self and others

In two studies, we examined depressed and nondepressed persons' judgments of the probability of future positive and negative life events occurring to themselves and to others. Study 1 demonstrated that depressed subjects were generally less optimistic than their nondepressed counterparts: Although nondepressed subjects rated positive events as more likely to happen to themselves than negative events, depressed subjects did not. In addition, relative to nondepressed subjects, depressed subjects rated positive events as less likely to occur to themselves and more likely to occur to others and negative events as more likely to occur to both self and others. Study 2 investigated the role that differential levels of self-focused attention might play in mediating these differences. On the basis of prior findings that depressed persons generally engage in higher levels of self-focus than nondepressed persons do and the notion that self-focus activates one's self-schema, we hypothesized that inducing depressed subjects to focus externally would attenuate their pessimistic tendencies. Data from Study 2 supported the hypothesis that high levels of self-focus partially mediate depressive pessimism: Whereas self-focused depressed subjects were more pessimistic than nondepressed subjects, externally focused depressed subjects were not. The role of attentional focus in maintaining these and other depressive pessimistic tendencies was discussed.     

Endorsement of dysfunctional beliefs depends on current mood state

In two studies we tested the hypothesis that endorsement of dysfunctional beliefs depends on current mood state for persons who are vulnerable to depression. The first study showed that reports of dysfunctional beliefs vary with spontaneous diurnal mood fluctuations in 47 depressed psychiatric patients. The effect of mood state was highly significant (p less than .01); dysfunctional thinking increased when mood was worst and decreased when mood was best. The second study conceptually replicated this finding in a population of asymptomatic subjects. As predicted, reports of dysfunctional beliefs varied as a function of mood state in 14 persons who had experienced a depressive episode but not in 27 who had never been depressed. These findings support the cognitive theory of depression, which proposes that dysfunctional beliefs are vulnerability factors for depression but also that reporting of dysfunctional beliefs depends on current mood state.     

Mood, recall, and selectivity effects in normal college students

In three experiments we explored the relation between normal variation in depressed mood and memory in college students. Subjects read and subsequently recalled stories whose protagonists experienced good, bad, and neutral events. Contrary to predictions arising independently from capacity theory and from schema theory, the recall of depressed and nondepressed subjects did not differ in either overall level or in affective content. The results are not easily handled by a conceptualization of depression, tied to schema theory, which proposes that negative cognitions are important for the initiation and maintenance of depression. The general usefulness of induction procedures in research on the depressive syndrome is discussed.     

Emotion and prior knowledge in memory and judged comprehension of ambiguous stories

Abstract

Two experiments investigated the effects of experimentally induced mood states on memory and judged comprehension of stories. The experiments examined the issue of whether induction of a depressed mood would affect prose memory and comprehension and impair the ability of individuals to use prior knowledge, activated by way of a title, in remembering the passage. In Experiment 1, depressed subjects who were given a title for the passage recalled fewer idea units when compared with neutral control conditions, but no depressive deficit in recall occurred in the absence of a title. In Experiment 2 the same pattern of results occurred when subjects learned two successive passages. The depressive deficits obtained were interpreted in terms of a resource allocation model which proposes that emotional states increase the production of irrelevant, competing thoughts that interfere with processes important in remembering the criterion passage. Alternative explanations involving cognitive initiative and schema theory were discussed. Finally, judgments of comprehension predicted passage recall and were better predictors for neutral than depressed mood subjects. A depressed mood state did not affect average judgments of comprehension even when recall was correspondingly impaired.     

Lay Theories Concerning Causes and Treatment of Depression

This study compared perceptions of the causes of, therapies for, and means of coping with, depression between two groups of currently nondepressed adults: one with a history of major depression and one with no history of depression. Currently nondepressed participants were selected so that effects of past experience of depression could be distinguished from those of current mood. Recovered depressed participants (RD) (n = 25) and Never depressed participants (ND) (n = 25) recruited via newspaper advertisements completed self-report measures of (a) the perceived utility of either professional or self-help coping strategies for managing their own experiences of depression; (b) likely effectiveness of several major therapies for depression; and (c) perceived accuracy of several etiological theories of depression. RD participants rated depression as being less amenable to everyday self-help methods of coping and more in need of professional intervention. However, RD and ND subgroups did not differ significantly in their perceptions of the plausibility of etiological theories of depression in general, nor in their ratings of the likely helpfulness of major therapies.     

Performance benefits of depression: sequential decision making in a healthy sample and a clinically depressed sample

Previous research reported conflicting results concerning the influence of depression on cognitive task performance. Whereas some studies reported that depression enhances performance, other studies reported negative or null effects. These discrepant findings appear to result from task variation, as well as the severity and treatment status of participant depression. To better understand these moderating factors, we study the performance of individuals-in a complex sequential decision task similar to the secretary problem-who are nondepressed, depressed, and recovering from a major depressive episode. We find that depressed individuals perform better than do nondepressed individuals. Formal modeling of participants' decision strategies suggested that acutely depressed participants had higher thresholds for accepting options and made better choices than either healthy participants or those recovering from depression.     

A slow wave investigation of working memory biases in mood disorders

Mood-congruent working memory biases were examined in a delayed matching to sample paradigm using the slow wave (SW) event-related brain potential (ERP) component. Mood-congruent working memory biases, indexed by SW amplitudes, were demonstrated among individuals experiencing a major depressive episode (MDE) and nondepressed controls but not individuals with dysthymia. However, analyses of symptom severity demonstrated that those with dysthymia exhibited significantly less negative SW amplitudes with increasing depressive mood severity, whereas individuals with major depression demonstrated more negative SW amplitudes with increasing depressive mood severity. These results are discussed in the context of diagnostic specificity for cognitive biases associated with working memory of mood-disordered individuals.     

The effects of gender and response style on depressed mood

Research has shown that gender differences in the rate of depression may be accounted for by different response styles. To examine whether response style affects mood, depressed mood was induced in 31 females and 33 males (all Caucasian) who were then randomly assigned to either a ruminating or a distracting response task. The findings supported the response style theory as the ruminating group remained depressed after the response task, while the distracting group became less depressed. Gender was not a factor in this experiment as both men and women reacted similarly to the mood induction and the experimental tasks. Although clinical implication cannot be determined from a study involving nondepressed subjects, it can be concluded that ruminating about one's depressed mood is not an effective method for overcoming depression.     

Mood induction in a clinically depressed population

Mood induction paradigms have become particularly useful in isolating and examining the relationship between mood and cognition relative to depressive vulnerability. The relationship between these two variables was examined using a 2 × 4 design (Diagnostic Group × Condition) whereby subjects classified as depressed (N=72) and nondepressed (N=61) were assigned to one of four conditions. It was shown that the cognitions of clinically depressed individuals were more dysfunctional than those of nondepressed subjects and that they can undergo temporary states of elation in the absence of any significant change in depressive cognition. How these results relate to cognitive theories of emotion is discussed.     

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.     

Depression in child psychiatric inpatients: Cognitive and attributional patterns

Cognitive and learned helplessness models of depression view maladaptive cognitive and attributional patterns as core features of depressive disorders. This study examined cognitive and attributional patterns in depressed children, nondepressed children, and a subgroup of remitting depressives who had histories of depression but were not reporting depressive symptoms when evaluated during the first 2 weeks of hospitalization. When compared with nondepressed controls, depressed children reported significantly more hopelessness, more negative self-perceptions, and negative self-perceptions across a wider variety of domains, and they displayed more dysfunctional attributional styles. While 55% of depressed children displayed pervasive maladaptive cognitive patterns, the other 45% of depressed children scored more similarly to nondepressed children, suggesting that childhood depressive disorders may be heterogeneous with respect to cognitive patterns. Contrary to the notion of traitlike depressive cognitive and attributional patterns that persist after the remission of depressive episodes, children with remitting depressions scored similarly to nondepressed children.Partial support for this project was provided by a grant from the John D. and Catherine T. MacArthur Foundation as part of their Network on Risk and Protective Factors in the Major Mental Disorders. I wish to thank Donald Guthrie for providing statistical consultation, Gwen Gordon for her computer assistance, and Niels Mueller and Jean Keller for their help with data collection.     

Effects of Level of Processing on Implicit and Explicit Memory in Depressed Mood

Recently, several studies have addressed the question of whether depression affects priming in implicit memory tasks. The main aim of this experiment was to assess the presence of a bias for negative information in explicit memory (free recall) and implicit memory (word-stem completion) tasks among subclinically depressed subjects compared to nondepressed subjects, using the typical levels of processing manipulation. The results of this study show the existence of a mood-congruent memory bias for both implicit and explicit memory in depressed subjects. The theoretical implications of these findings for implicit and explicit memory biases associated with depressed mood are discussed.     

Is retrieving positive self-concordant specific memory beneficial to mood repair? The moderation effect of depressive symptoms

The present study examined whether positive specific memory recall improves mood more than overgeneral memory recall. Moreover, this study examined the mood contrast effect in subclinically depressed participants. The mood contrast effect refers to when people ruminate on discrepancies between the current self and a past ideal self by recall of positive self-discrepant (low self-concordant) memories and thereby, fall into a negative mood. Undergraduate students (N?=?161) underwent a negative mood induction, and then concentrated on positive specific memory recall, positive overgeneral memory recall, or distraction. Results showed that there were no group differences in mood repair. Nevertheless, recalled memory self-concordance was associated with sad mood repair in the specific memory group, and moreover, this effect was not significant in people high in depressive symptoms. We discussed the results of mood repair effect from the perspective of baseline negative mood in subclinical depression.