A longitudinal investigation of the reliability of memories for trauma and other emotional experiences

This study examined the relative consistency and characteristics of memories for trauma and other non‐traumatic emotional experiences over time. A community sample of 52 participants who reported a recent traumatic event were asked to recall both the traumatic and a positive emotional experience in two interviews separated by approximately three months (M = 105.39 days). The recollections were elicited with either a free narrative, cognitive interview, guided imagery, or written narrative approach. Results indicated that traumatic experiences were recalled more reliably over time than other emotional experiences. Traumatic memory imagery tended to persist in memory (with no apparent impairment), whereas features of positive memories were subject to considerable distortion, regardless of interview style. The findings contribute to the understanding of the impact of trauma on memory with the passage of time. Copyright © 2004 John Wiley & Sons, Ltd.     

Are memories for sexually traumatic events "special"? A within-subjects investigation of trauma and memory in a clinical sample

According to a long-standing clinical tradition, sexually traumatic experiences are processed and recalled differently from other experiences, often leading to memory impairment. In this study, we compared the characteristics of traumatic memories for sexual violence and two other types of emotional experiences. N=44 women recruited from a local sexual trauma agency were asked to recall and describe three autobiographical events: sexual abuse/assault, a non-sexual trauma, and a positive emotional event. The characteristics of the three memory types were compared on both subjective and objective measures. Further, the potential influences of level of traumatic impact and dissociation were assessed. Results indicated that memories for sexual trauma were not impaired or fragmented relative to other memories. Instead, memories for sexual trauma were associated with a remarkably high level of vividness, detail, and sensory components. Further, high levels of traumatic impact were not associated with memory impairment. Implications for the ongoing traumatic memory debate are discussed.     

Characteristics of memories for traumatic and nontraumatic birth

Evidence for memory characteristic differences between trauma and other memories in non‐clinical samples is inconsistent. However, trauma is frequently confounded with the event recalled. This study compares trauma and nontrauma memories for the same event, childbirth, in a non‐clinical sample of 285 women 4–6 weeks after birth. None of the women met diagnostic criteria for post‐traumatic stress disorder. Traumatic birth, defined by the DSM‐5 event criterion, was reported by 100 women. The ratings of some memory characteristics did not differ between memories for traumatic and nontraumatic birth: All were rated highly coherent and central to women's lives, with moderate sensory memory. However, women who experienced traumatic births reported more involuntary recall, reliving, and negative/mixed emotions. Thus, trauma memories differed from nontrauma memories. In this non‐clinical sample, this is likely to be due to encoding during trauma rather than the distinctive memory profile for memories retrieved by those experiencing trauma symptoms.     

Above and beyond emotional valence: the unique contribution of central and traumatic shame memories to psychopathology vulnerability

This paper explores whether shame memories have a distinct impact on emotional difficulties and psychopathology that goes beyond their negative emotional valence. Study 1 (N=292) investigates the contribution of centrality of shame memory, in comparison to the centrality of fear and sadness memories, to explain the memory's traumatic impact, shame, depression, anxiety, stress, paranoid, and dissociative symptoms. Study 2 (N=192) explores the impact of shame traumatic memory on shame and depression, anxiety, and stress symptoms, in comparison to fear and sadness traumatic memories. Both studies used undergraduate student samples. Results show that shame memories' centrality and traumatic features made an independent contribution to current external and internal shame and distinct psychopathological symptoms, after controlling for the effect of fear and sadness, centrality, and traumatic qualities. Moreover, shame memories' centrality and traumatic features were the best global predictors of external and internal shame and depressive symptoms. Centrality of shame memories was also the only significant predictor of paranoid ideation and dissociation. These results offer novel perspectives on the nature of shame and its relation to psychopathology, emphasising the distinct role of shame memories in human functioning and suffering, which goes above and beyond its negative emotional valence.     

The impact of depression and PTSD symptom severity on trauma memory

Posttraumatic stress disorder (PTSD) and depression frequently co-occur following a traumatic event. Differences in the processing of autobiographical memory have been observed in both disorders in the form of overgeneralised memories and negative intrusive memories. The current study examined how symptoms of PTSD and depression influence the phenomenological characteristics of trauma memories. Undergraduate students who had experienced a traumatic event (n?=?696) completed questionnaires online including measures of PTSD and depressive symptom severity. They rated their trauma memory on several phenomenological characteristics using the Memory Experiences Questionnaire [Sutin, A. R., &; Robins, R. W. (2007). Phenomenology of autobiographical memories: The memory experiences questionnaire. Memory.]. Moderated multiple regression was used to examine how PTSD and depressive symptom severity related to each phenomenological characteristic. Symptoms of PTSD and depression were related separately and uniquely to the phenomenological characteristics of the trauma memory. PTSD severity predicted trauma memories that were more negative, contained higher sensory detail, and were more vivid. In contrast, depressive symptom severity predicted trauma memories that were less accessible and less coherent. These findings suggest that depressive and PTSD symptomatology affect traumatic memory differently and support a distinction between these two disorders.     

Aussagen ??ber traumatische Erlebnisse

The manner in which traumatic events are processed and recalled remains highly controversial. A central issue in the debate is whether traumatic experiences affect memory differently than other events. In this paper, two lines of research are reviewed: (a) comparisons of characteristics of traumatic and other memories and (b) comparisons of characteristics of traumatic memories of trauma survivors with and without posttraumatic stress disorder (PTSD). While PTSD groups reported more intrusive memories than non-PTSD groups, there is no consistent evidence for memory fragmentation neither for traumatic events in general nor for PTSD patients. Implications for credibility assessments are discussed.     

Similarities and differences between traumatic and emotional memories: review and directions for future research

The authors review theory and empirical research on the characteristics of memories for traumatic versus emotional events, with the goal of bringing together the cognitive and clinical perspectives on this issue. They consider the most important approaches to the study of traumatic and emotional memory and summarize the results of recent studies that have compared autobiographical recollections of traumatic and nontraumatic emotional experiences (positive and negative), either in nonclinical or clinical samples. Overall, findings from the current empirical literature are inconsistent. Although some researchers have found that traumatic memories are retrieved differently than are emotional memories, others have demonstrated that the phenomenological characteristics of these memory types are highly similar. The authors discuss methodological issues that could help researchers to interpret the inconsistencies found in the empirical findings. Last, they suggest possible directions for future research that may advance researchers' knowledge of memory, trauma, and emotion.     

A New Solution to the Recovered Memory Debate

ABSTRACT— The controversy regarding recovered memories of childhood sexual abuse (CSA) has been characterized by two perspectives. According to one perspective, some people repress their memories of abuse because these experiences have been so emotionally traumatic, and they become capable of recalling the CSA only when it is psychologically safe to do so many years later. According to the other perspective, many reports of recovered memories of sexual abuse are false memories, often inadvertently fostered by therapists. In this article, we provide evidence for a third interpretation that applies to a subset of people reporting recollections of CSA; it does not require the concepts of repression, trauma, or false memory. These people did not experience their CSA as traumatic; they either failed to think about their abuse for years or forgot their previous recollections, and they recalled their CSA spontaneously after encountering reminders outside of psychotherapy. Their recovered memories are corroborated at the same rate as those of people who never forgot their abuse. Hence, recalling CSA after many years is not the same thing as having recalled a previously repressed memory of trauma.     

Above and beyond emotional valence: The unique contribution of central and traumatic shame memories to psychopathology vulnerability

This paper explores whether shame memories have a distinct impact on emotional difficulties and psychopathology that goes beyond their negative emotional valence. Study 1 (N=292) investigates the contribution of centrality of shame memory, in comparison to the centrality of fear and sadness memories, to explain the memory's traumatic impact, shame, depression, anxiety, stress, paranoid, and dissociative symptoms. Study 2 (N=192) explores the impact of shame traumatic memory on shame and depression, anxiety, and stress symptoms, in comparison to fear and sadness traumatic memories. Both studies used undergraduate student samples. Results show that shame memories' centrality and traumatic features made an independent contribution to current external and internal shame and distinct psychopathological symptoms, after controlling for the effect of fear and sadness, centrality, and traumatic qualities. Moreover, shame memories' centrality and traumatic features were the best global predictors of external and internal shame and depressive symptoms. Centrality of shame memories was also the only significant predictor of paranoid ideation and dissociation. These results offer novel perspectives on the nature of shame and its relation to psychopathology, emphasising the distinct role of shame memories in human functioning and suffering, which goes above and beyond its negative emotional valence.     

Rrepresentations of trauma in infancy: Clinical and theoretical implications for the understanding of early memory

Understanding the nature of the infant's internal experience is a crucial prerequisite for delineating the developmental effects of an early trauma. In addition, to the extent that internal representations of a trauma can be traced over time, traumatic experiences present unique opportunities for the study of early memory. This article will describe case vignettes of children who experienced a trauma in the preverbal period and who evidenced forms of memory of their trauma at subsequent points in time. In conjunction with the clinical material, developmental research bearing on the types of early memories described will be discussed. The clinical data, reinforced by research findings, indicate that preverbal children, even in the first year of life, can establish and retain some form of internal representation of a traumatic event over significant periods of time. The specificity and enduring nature of the internal representations suggest that specific therapeutic interventions over and above general comforting will be required if an infant is to maximally recover from a trauma. The clinical findings have relevance for a number of issues currently under debate in the area of infant memory, including the role of reminders in memory retention, the nature of early memory systems, and the development of autobiographical memory. ©2002 Michigan Association for Infant Mental Health.     

Impaired specific autobiographical memory as a risk factor for posttraumatic stress after trauma

This study tested the proposal that impaired retrieval of specific autobiographical memories is a risk factor for psychological disturbance after trauma exposure. Trainee firefighters (N = 60) were assessed during training (before trauma exposure) on the Autobiographical Memory Test, Clinician Administered PTSD Scale, Beck Depression Inventory (BDI-II), and Traumatic Events Questionnaire. Participants were reassessed 4 years later (N = 46) on the Posttraumatic Diagnostic Scale and BDI-II. All participants had been exposed to multiple traumatic events, and 15% met criteria for posttraumatic stress disorder. Impaired retrieval of specific memories in response to positive cues prior to trauma exposure significantly predicted posttraumatic stress severity after trauma exposure. These findings provide initial evidence that impaired specific retrieval of memories may be a risk factor for posttraumatic stress.     

Autobiographical memories for the September 11th attacks: Reconstructive errors and emotional impairment of memory

College students were asked about their personal memories from September 11, 2001. Consistency in reported features over a 2-month period increased as the delay between the initial test and 9/11 increased. Central features (e.g., Where were you?) were reported with greater consistency than were peripheral features (What were you wearing?) but also contained a larger proportion of reconstructive errors. In addition, highly emotional participants demonstrated poor prospective memory and relatively inconsistent memory for peripheral details, when compared with less emotional participants. Highly emotional participants were also more likely to increase the specificity of their responses over time but did not exhibit greater consistency for central details than did less emotional participants. The results demonstrated reconstructive processes in the memory for a highly consequential and emotional event and emotional impairment of memory processing of incidental details.     

‘Comparisons of traumatic and positive memories in people with and without PTSD profile’

According to most post‐traumatic stress disorder (PTSD) theories, memory mechanisms are involved in its development and maintenance. However, the specific memory characteristics responsible for this disorder are still not well known. In the present study, 210 participants having reported at least one traumatic experience were assigned to a PTSD or to a non‐PTSD symptom profile group. Both groups rated their memories for their most traumatic and intense positive life events. We observed that the traumatic memories of PTSD profile participants were more clear, detailed and judged as significant compared with those of the non‐PTSD profile group. However, participants in the first group acknowledged having more difficulties putting their traumatic memories into words and controlling these remembrances. These differences were absent in their positive memories. Additionally, clear relationships emerged between memory ratings and PTSD symptoms measures. Results are discussed according to fragmentation and superiority views of traumatic memories in PTSD. Copyright © 2006 John Wiley & Sons, Ltd.     

Vantage point in traumatic memory

Abstract— Persons with posttraumatic stress disorder (PTSD) spontaneously recalled the traumatic event that led to their condition from either a field or an observer vantage point. In the former case, participants recollected the event as if they were seeing it again through their own eyes; in the latter case, the event was recalled from the perspective of a detached spectator. Analysis of the two types of recollections revealed marked differences in their contents. Whereas field memories afforded richer accounts of the affective reactions, somatic sensations, and psychological states that participants experienced during the focal trauma, observer memories contained more information about participants' physical appearance and actions and the spatial layout of the traumatic scene. Observer trauma memories were also experienced as less emotional and anxiety provoking than field trauma memories. The discussion focuses on the clinical implications of these findings and prospects for future research on traumatic memory.     

Remembrance of lies past: A comparison of the features and consistency of truthful and fabricated trauma narratives

The credibility of reports of victimization must be evaluated by police and adjudicators. The present prospective study investigated the features of truthful and fabricated narratives of trauma and their relative consistency over a 6‐month period. Participants described both a genuine and fabricated traumatic experience on three occasions over the 6 months. The narrative features were coded at each phase and the stories' consistency was examined at Times 2 and 3. We found that truthful trauma narratives contained more: details, contextual information, and emotional details, and were rated as more ‘plausible’, relative to fabricated traumas. The details of truthful narratives also were more factually consistent than fabricated narratives over the 6 month interval. This research offers basic information on the nature and consistency of traumatic memories, and potentially applicable information for discriminating true and false allegations. Copyright © 2010 John Wiley & Sons, Ltd.     

Seeking the Core: The Issues and Evidence Surrounding Recovered Accounts of Sexual Trauma

This review identifies some of the many layers that surround and potentially obscure the emotionally charged topic of recovered accounts of childhood abuse. Consideration of the, admittedly often indirect, evidence provides suggestive support for many of the components of both recovered and fabricated memories of abuse. With respect to recovered memories the available evidence suggests that: (1) although the prior accessibility of a memory may be difficult to determine, recovered memory reports can sometimes be corroborated with respect to their correspondence to actual abuse; (2) although individuals often retain memory for trauma, there is evidence for fluctuations in the accessibility of traumatic experiences, particularly for situations that are extremely difficult to talk about; (3) there are compelling mechanisms available to account for both the decreases and the subsequent increases in accessibility of traumatic memories that could lead to recovered memory reports. With respect to fabricated memories the available evidence suggests that: (1) people are highly capable of fabricating vivid recollections that can be confused with reality; (2) once fabricated, there seems to be no limit to the preposterous false memories that some individuals are capable of accepting particularly when in the presence of a persuasive individual in a position of authority. Although future research is needed to provide more direct evidence for the above claims, at present readers are urged to consider the strong likelihood that both recovered and fabricated memories correspond to real phenomena.     

Keeping memories at an arm's length: vantage point of trauma memories

This study investigated the relationship between memory vantage point and avoidance following trauma. Sixty trauma survivors with differing levels of avoidance were interviewed about the vantage point of their memory for trauma, a positive memory, and a neutral memory. Avoidant individuals were more likely to remember their trauma from an observer perspective than individuals with a lower level of avoidance. Avoidance did not influence vantage point for positive or neutral memories. These data support the proposal that adoption of the observer vantage point for trauma memories may serve an avoidant function for people affected by trauma.     

Comparing Children’s Memories for Negative Versus Positive Events in the Context of Posttraumatic Stress Symptoms

How well children remember negative events is not fully understood. Previous research has failed to simultaneously test memory and perceptions of memory for both negative and positive events. Children (n = 38, 7–17 years) recruited from a hospital following accidental injury were tested for their memory of an injury-producing accident (negative event) and a positive event (unexpectedly receiving a $50 gift voucher). Objective accuracy of memory, memory quality characteristics (e.g., how coherently the event was recalled), children’s judgments of their memory (meta-cognitive), and posttraumatic stress (PTS) symptoms were assessed 2 months post-injury. Children’s memories for their experiences were verified using witness/parent reports. Memory quality characteristics of children’s free recollection were coded with a previously used standardized system. Overall, children showed high levels of accuracy for both events, with little degradation over time. High PTS children showed little evidence of deficits in coherence or organization in their narratives relative to low PTS children. Although in some instances high PTS children judged their memory quality to be poor compared to low PTS children, this depended on how this was assessed (e.g., self-report questionnaire vs. coded narratives). In terms of limitations, it is unclear whether the findings will generalize for memories of repeated events. Witness verification of the accident details itself could be prone to error. In conclusion, the findings are broadly supportive of the proposal made by theorists who argue that trauma memories are recalled no less accurately than other distinctive memories. The role of meta-cognitive elements of children’s memory and reporting in PTS is less clear.