Reduced specificity of emotional autobiographical memories following self-regulation depletion

The present study used a Color Stroop task, involving naming the ink colors of incongruous color words, to deplete self-regulation resources prior to retrieving a series of autobiographical memories to emotional and neutral cue words--the Autobiographical Memory Test (AMT). Control participants either read color words written in black ink or performed no task prior to the AMT. Difficulty accessing specific memories on the AMT has been shown to index key aspects of the onset and maintenance of depression and other emotional disorders. Our hypothesis that depleted participants would retrieve fewer specific memories to cues on the AMT relative to controls was supported, even when levels of depressed and anxious mood, an index of clinical depression, posttraumatic stress, and verbal intelligence were covaried. The results indicate that self-regulation depletion via a neutral, unrelated task can impact on emotion-related autobiographical memory processes that have been shown to be dysfunctional in emotionally disordered populations.     

Autobiographical Memory in Patients with Tinnitus

Studies on psychiatric patients have found that their memories of the past are often unspecific and overgeneral, but the extent to which this is the case for patients with somatic problems has so far only been examined in patients with chronic pain and in patients with diabetes. The present study investigated autobiographical memories in 19 tinnitus patients and 19 controls without tinnitus. Participants were administered the autobiographical memory test (AMT), the Controlled word association test, and self-report measures of depression, anxiety, and tinnitus distress. Compared to control participants, tinnitus patients had difficulty retrieving specific memories and showed longer retrieval latencies. Additionally, tinnitus patients had fewer specific memories to positive cue words. While AMT responses were associated with depression scores, the difference between controls and patients remained significant for positive cue words after controlling for depression scores. Results suggest that cognitive components should be an integral element of the psychological management of tinnitus. The use in future studies of experimental methods such as AMT in health psychology is encouraged.     

Autobiographical memory specificity, psychopathology, depressed mood and the use of the Autobiographical Memory Test: a meta-analysis

Reviewing the literature on autobiographical memory overgenerality, as measured by a cueing task like the Autobiographical Memory Test (AMT), gives a diffuse view of the moderating role of depression. This meta-analysis is an attempt to investigate the role of depression in the specificity of autobiographical memory, while accounting for the role of patient and task variables as possible moderators. Meta-analytic techniques are used to synthesize data from 14 studies on the recall of specific autobiographical memories in psychiatric and non-psychiatric samples. The results confirm the relationship between overgenerality and depression. The psychiatric patients are less specific than their non-clinical controls. It is not possible to establish that this result is solely due to a (co-morbid) diagnosis of depression. Self-reported depressed mood is also related to an impairment of autobiographical memory specificity. The way of presenting cues, audio taping responses and the maximum available amount of time to respond, are moderators of AMT performance.     

Autobiographical memory in dysphoric and non‐dysphoric college students using a computerised version of the AMT

On autobiographical memory tests (AMTs) using positive and negative cue words, research has consistently found that depressed individuals (relative to nondepressed controls) are more likely to recall overgeneral memories (OGMs) and are less likely to recall specific memories. A total of 56 undergraduates who scored high or low on a measure of depression were shown positive and negative word cues and event cues in a computerised AMT. Dysphoric college students made significantly fewer specific and more categoric (overgeneral) responses than controls, but did not differ from controls in terms of extended responses. Results suggest that the difference in memory specificity between low and high dysphoric students generalises across word and event cues and that a computerised version of the AMT can be used as an alternative to interviews as a form of administration.     

Overgeneral autobiographical memory in children of depressed mothers

The goal of this study was to examine overgeneral autobiographical memory in a population at-risk for depression (i.e., children of depressed mothers). We predicted that children of depressed mothers would display less-specific memories than children of non-depressed mothers and that these results would be observed among children with no prior history of depression themselves. Participants in this study were children (age 8–14; 50% girls, 83% Caucasian) of mothers with (n = 103) or without (n = 120) a history of major depressive disorder during the child's life. Mothers' and children's diagnoses were confirmed with a diagnostic interview, and children completed the Autobiographical Memory Test and a measure of depressive symptoms. We found that children of depressed mothers, compared to children of non-depressed mothers, recalled less-specific memories in response to negative cue words but not positive cue words. Importantly, these results were maintained even when we statistically controlled for the influence of children's current depressive symptom levels and excluded children with currently depressed mothers. These results suggest that overgeneral autobiographical memory for negative events may serve as a marker of depression risk among high-risk children with no prior depression history.     

Cue self-relevance affects autobiographical memory specificity in individuals with a history of major depression

Previously depressed and never-depressed individuals identified personal characteristics (self-guides) defining their ideal, ought, and feared selves. One week later they completed the autobiographical memory test (AMT). For each participant the number of AMT cues that reflected self-guide content was determined to produce an index of AMT cue self-relevance. Individuals who had never been depressed showed no significant relationship between cue self-relevance and specificity. In contrast, in previously depressed participants there was a highly significant negative correlation between cue self-relevance and specificity--the greater the number of AMT cues that reflected self-guide content, the fewer specific memories participants recalled. It is suggested that in individuals with a history of depression, cues reflecting self-guide content are more likely to prompt a shift to processing of information within the long-term self (Conway, Singer, & Tagini, 2004), increasing the likelihood that self-related semantic information will be provided in response to cues on the autobiographical memory test.     

Specificity of episodic and semantic aspects of autobiographical memory in relation to symptoms of posttraumatic stress disorder (PTSD)

Two studies examined the relationship between the ability to access specific autobiographical material in memory and presence/symptoms of posttraumatic stress. In Study 1, a sample of refugees with a diagnosis of posttraumatic stress disorder (PTSD) completed the Autobiographical Memory Test (AMT) in which they had to generate specific episodic autobiographical memories in response to emotion-related cue words. Results showed that reduced specificity of memories on the AMT was associated with an increased frequency of trauma-related flashbacks but with reduced use of effortful avoidance to deal with trauma-related intrusions in the day-to-day. Study 2 examined retrieval of semantic autobiographical information from previous lifetime periods in groups of cancer survivors with posttraumatic stress and healthy controls. The cancer survivors were able to generate fewer specific semantic details about the personal past compared to the controls. The more symptomatic survivors showed the greatest memory impairment. The data from both studies are discussed in terms of compromised access to specific autobiographical material in distressed trauma survivors reflecting a process of affect regulation.     

Overgeneral past and future thinking in dysphoria: the role of emotional cues and cueing methodology

Overgeneral memory, where individuals exhibit difficulties in retrieving specific episodes from autobiographical memory, has been consistently linked with emotional disorders. However, the majority of this literature has relied upon a single methodology, in which participants respond to emotional cue words with explicit instructions to retrieve/simulate specific events. Through the use of sentence completion tasks the current studies explored whether overgenerality represents a habitual pattern of thinking that extends to how individuals naturally consider their personal past and future life story. In both studies, when compared with controls, dysphoric individuals evidenced overgeneral thinking style with respect to their personal past. However, overgeneral future thinking was only evident when the sentence stems included emotional words. These findings highlight the importance of investigating the overgenerality phenomenon using a variety of cueing techniques and results are discussed with reference to the previous literature exploring overgenerality and cognitive models of depression.     

Trauma and autobiographical memory specificity in depressed inpatients

Research on autobiographical memory has shown that clinical depression is associated with a difficulty in retrieving specific autobiographical memories in response to cue words. This study examined the relation between lack of autobiographical memory specificity and self-reported trauma in a group of depressed adults (N = 23). In addition to the Autobiographical Memory Test (AMT; Williams & Broadbent, 1986) participants completed a number of questionnaires assessing the presence of traumatic experiences in the past, level of depression and neuroticism. The number of specific responses was not related to depression severity, but was significantly associated with the presence and severity of reported physical abuse. Participants who had been victim of physical abuse were less specific than participants who had not been confronted with such physical adversities. The results are discussed in the context of a functional hypothesis about the developmental relations between memory specificity, trauma and depression.     

Mental time travel after trauma: the specificity and temporal distribution of autobiographical memories and future-directed thoughts

The present study investigated the relationship between trauma exposure and specificity and temporal distribution of autobiographical memories and future-directed thoughts. A group of sexual assault victims were compared with women without previous trauma exposure in relation to specificity of autobiographical memories, as measured by the Autobiographical Memory Task (AMT) and specificity of future-directed thoughts as measured by the Future Cueing Task (FCT). The temporal distribution of future-directed thoughts and autobiographical memories was studied by asking the participants to estimate when each memory reported on the AMT had occurred and when each future event reported on the FCT would occur. The results showed no difference between the trauma group and the controls on specificity of autobiographical memories and future-directed thoughts. In line with a review of Moore and Zoellner (2007), PTSD symptoms as measured by the Impact of Event Scale (IES) correlated negatively with specificity. Furthermore, we observed no difference in temporal distribution of future-directed thoughts or autobiographical memories between trauma exposed participants and controls.     

Mental time travel after trauma: The specificity and temporal distribution of autobiographical memories and future-directed thoughts

The present study investigated the relationship between trauma exposure and specificity and temporal distribution of autobiographical memories and future-directed thoughts. A group of sexual assault victims were compared with women without previous trauma exposure in relation to specificity of autobiographical memories, as measured by the Autobiographical Memory Task (AMT) and specificity of future-directed thoughts as measured by the Future Cueing Task (FCT). The temporal distribution of future-directed thoughts and autobiographical memories was studied by asking the participants to estimate when each memory reported on the AMT had occurred and when each future event reported on the FCT would occur. The results showed no difference between the trauma group and the controls on specificity of autobiographical memories and future-directed thoughts. In line with a review of Moore and Zoellner (2007), PTSD symptoms as measured by the Impact of Event Scale (IES) correlated negatively with specificity. Furthermore, we observed no difference in temporal distribution of future-directed thoughts or autobiographical memories between trauma exposed participants and controls.     

Assessing the specificity of autobiographical memory in individuals at a trait-based vulnerability to bipolar disorder using a sentence completion task

Overgeneral autobiographical memory recall has been associated with the diagnosis of bipolar disorder, but the role of overgenerality in the vulnerability to bipolar disorder remains under-researched. While a previous study suggested that high-risk individuals for bipolar disorder recall emotionally negative memories in specific detail, this is in contrast to memory recall patterns noted in bipolar samples. The Autobiographical Memory Test (AMT) used in previous non-clinical studies has also been criticised for not being sensitive to overgenerality due to its repetition of specificity instructions and practice trials. The traditional AMT format may allow some individuals to override their trait-based tendencies to be overgeneral. The current study used a sentence completion task to assess memory specificity in groups of students at a low and high trait-based vulnerability for bipolar disorder. In contrast to previous research, high-risk individuals recalled fewer specific positive memories and greater numbers of overgeneral negative memories than low-risk individuals. These results support the notion that the vulnerability for bipolar disorder might be associated with similar recall biases as demonstrated in bipolar samples, and that the AMT might not be sufficiently sensitive to detect overgenerality in non-clinical groups. The implications of these findings and directions for future research are discussed.     

How are depression and autobiographical memory retrieval related to culture?

This study investigated how culture influences the association between autobiographical memory retrieval and depression. Thirty clinically depressed patients and 30 controls, 15 each from Britain and Taiwan, completed the English and Chinese versions of the Autobiographical Memory Cueing Task (AMT). Overall, the depressed individuals from both cultural groups retrieved significantly fewer specific and more categoric autobiographical memories than their matched, nondepressed controls. Within the control groups, the British participants retrieved significantly more specific autobiographical memories and fewer categoric memories than their Taiwanese counterparts. These results suggest that difficulty in retrieving specific autobiographical memories typical of depression may be a cognitive bias that occurs across cultures.     

Overgeneral autobiographical memory in depressed adolescents with, versus without, a reported history of trauma

Autobiographical memory retrieval is fundamental to the developing self-concept in adolescence, to emotion regulation, and to social problem solving and has been shown to be compromised in adolescents diagnosed with depression (R. J. Park, I. M. Goodyer, & J. D. Teasdale, 2002). The authors of the present study assessed autobiographical memory overgenerality in a sample of depressed adolescent participants with, versus without, a reported history of trauma and never-depressed control participants by using an emotion word-cueing paradigm. The authors' analyses showed for the first time that adolescents with major depression and with no reported history of trauma exhibited an overgeneral memory bias. They also revealed that depressed adolescents who reported a history of trauma retrieved fewer overgeneral memories than did depressed adolescents who reported no history of trauma. Among depressed adolescents who reported a history of trauma, more severe posttraumatic stress symptoms were associated with less overgenerality. Possible accounts of these findings are suggested.     

Language-dependent access to autobiographical memory in Japanese-English bilinguals and US monolinguals

Japanese bilinguals retrieved autobiographical memories in response to 20 English and 20 Japanese cue words. US monolinguals were cued with 40 English words. All participants reported one earliest memory. Japanese bilinguals retrieved more memories and earlier memories when cued with Japanese words. They also retrieved more memories when the cue language matched either the language of memory encoding or the language of first thought. Although English cues elicited equivalent numbers of English and Japanese memories in the more fluent speakers of English, Japanese words elicited significantly larger numbers of Japanese memories in all Japanese-English bilinguals. The average age of cued autobiographical memories was significantly earlier for US than for Japanese students but age of the earliest memory did not differ.     

Social problem solving and autobiographical memory in posttraumatic stress disorder

This study investigated the relationship between overgeneral autobiographical memory and social problem solving in posttraumatic stress disorder (PTSD). Civilian trauma survivors with and without PTSD (N=41) provided autobiographical memories of events in response to positive and negative cue words. Participants also completed the means-end problem-solving (MEPS) procedure. PTSD participants reported more overgeneral memories, regardless of cue valence, than non-PTSD participants. Individuals with PTSD also displayed poorer problem solving than those without PTSD. Overgeneral autobiographical memory was strongly associated with deficits in problem solving. This study suggests that deficient problem solving in PTSD is associated with impaired retrieval of specific autobiographical memories.     

Effect of self-discrepancy on specificity of autobiographical memory retrieval

Research using a cue word paradigm has consistently shown that depression, in both adults and adolescents, is associated with difficulties in retrieving specific autobiographical memories. Inspired by previous work stating that depressed feelings are related to a perceived discrepancy between attributes of the actual and the ideal self, the present study aimed to investigate the hypothesis that cues bringing discrepancies between the actual and ideal selves to the foreground might promote or facilitate the recall of overgeneral (instead of specific) autobiographical memories. In two studies adolescents provided autobiographical memories in response to 10 high-discrepant and 10 low-discrepant words. As predicted, results in both studies showed an effect of cue word discrepancy on the specificity of autobiographical memories such that participants retrieved a smaller proportion of specific and a greater proportion of overgeneral memories in response to high-discrepant words as compared to low-discrepant words. The findings are discussed in terms of the self-memory system (SMS) as a conceptual framework of autobiographical memory (Conway & Pleydell-Pearce, 2000).     

Idiographic autobiographical memories in major depressive disorder

When cued with generic happy and sad words, depressed individuals have been found to articulate contextually impoverished, overgeneral memories of both positive and negative autobiographical events. The current study tested whether overgeneral memory is observed outside of the cue-word paradigm. Currently depressed, formerly depressed, and never-depressed controls underwent an idiographic interview procedure in which participants generated memories of their happiest and saddest lifetime events. Although depressed and nondepressed participants did not differ with respect to the specificity, retrieval difficulty, and emotionality of their saddest memories, depressed individuals' happiest memories were less specific, harder to retrieve, and less emotional than were nondepressed participants' happiest memories. The memory characteristics of formerly depressed participants largely resembled those of healthy controls. Overall, the present results suggest that meaningful cues trigger mood-congruent memory processing in currently, but not in formerly, depressed individuals.     

创伤青少年自传体记忆具体性减少：情感调节还是执行控制受损

结合经典的自传体记忆测验(AMT)和反转-自传体记忆测验(AMT-R)探究创伤青少年自传体记忆具体性减少的原因。首先通过创伤事件终身经历问卷-学生版(LIET-S)和创伤后症状自评量表(CROPS)对630名青少年进行筛查, 然后结合访谈, 并采用儿童事件冲击量表-修订版(CRIES)测量创伤程度, 最终选取有创伤后症状的青少年63名, 分为高创伤组和低创伤组, 另无创伤经历的青少年30名作为控制组。三组被试均参加AMT和AMT-R实验。结果发现, 在AMT中, 创伤青少年表现出自传体记忆具体性减少的特点, 且创伤后症状越严重, 具体性减少越明显; 在AMT-R中, 创伤青少年提取的具体记忆数量与控制组无显著差异。结果表明, 创伤青少年自传体记忆具体性的减少是情感调节的结果。     

Overgeneral autobiographical memory in adolescents at risk for depression

Autobiographical memory functioning is implicated in the course and onset of depression in adults (Williams et al., 2007), and there is preliminary evidence that adolescents with a diagnosis of depression have a bias towards retrieving overgeneral autobiographical memories (Kuyken & Howell, 2006; Kuyken, Howell, & Dalgleish, 2006; Park, Goodyer, & Teasdale, 2002). In two independent studies we asked whether adolescents at risk for depression exhibit autobiographical memory deficits. In the first community study of 179 adolescents, risk was operationalised as higher scores on neuroticism. We found that neuroticism was associated with greater retrieval of categoric memories to negative cue words and that severity of depressive symptoms mediated this relationship. In the second study, groups of formerly depressed (n=15) and never depressed adolescents (n=15) were matched on age, gender, depressive symptoms and verbal fluency, and again compared on their autobiographical memory functioning. Mirroring the findings from Study 1 we found that risk, operationalised here as a history of depression in remission, was associated with greater retrieval of categoric memories to negative cue words. Taken together, these studies show that risk for depression is associated with a greater tendency to retrieve categoric memories to negative cue words and suggest that autobiographical retrieval may be implicated in onset of depression in adolescence.