Nova-like Cataclysmic Variables in the Infrared

Novalike cataclysmic variables have persistently high mass transfer rates and prominent steady state accretion disks. We present an analysis of infrared observations of twelve novalikes obtained from the Two Micron All Sky Survey, the Spitzer Space Telescope, and the Wide-field Infrared Survey Explorer All Sky Survey. The presence of an infrared excess at >3-5 microns over the expectation of a theoretical steady state accretion disk is ubiquitous in our sample. The strength of the infrared excess is not correlated with orbital period, but shows a statistically significant correlation (but shallow trend) with system inclination that might be partially (but not completely) linked to the increasing view of the cooler outer accretion disk and disk rim at higher inclinations. We discuss the possible origin of the infrared excess in terms of emission from bremsstrahlung or circumbinary dust, with either mechanism facilitated by the mass outflows (e.g., disk wind/corona, accretion stream overflow, and so on) present in novalikes. Our comparison of the relative advantages and disadvantages of either mechanism for explaining the observations suggests that the situation is rather ambiguous, largely circumstantial, and in need of stricter observational constraints.Peer reviewe

Writing About Betrayal Trauma: Examining Gender and Narrative Structure

In Pennebaker's writing paradigm, participants are instructed either to write about emotional events or neutral topics. Those assigned to the emotional writing condition typically display physical and psychological health improvements (Pennebaker, 1997; Smyth, 1998). Up until now, the writing paradigm has for the most part been applied to events which have been described as emotional but not specifically traumatic. Betrayal trauma is perpetrated by someone who is close to the victim and has been associated with various negative consequences. Sixty-five university undergraduates (51 female, 14 male) were randomly assigned to write either about a distressing interpersonal event they experienced during childhood or how they spent their time during the previous day. Over 50% of all participants reported having experienced at least one betrayal trauma, women reported more betrayal trauma than men, and betrayal trauma and health measures were found to be negatively related. While a main effect of writing on symptomatology reduction was not found, a significant gender by writing condition interaction emerged, which revealed that, in general, women in the trauma writing condition benefited more than men. Examination of the essays points to the importance of narrative structure in predicting outcome.This study was made possible by funding from the University of Oregon Foundation Fund for Research on Trauma and Oppression (PI, J. Freyd), and the University of Oregon Graduate Education Committee

Exploring the Potential of Pennebaker’s Writing Paradigm on Betrayal Trauma Sequelae

In Pennebaker's writing paradigm, participants are instructed either to write about emotional events or neutral topics. Those assigned to the emotional writing condition typically display physical and psychological health improvements as compared to those who write about something neutral (Pennebaker, 1997; Smyth, 1998). Up until now, the writing paradigm has for the most part been applied to events which have been described as emotional but not specifically traumatic and those few studies that have looked at the effect of writing about traumatic experiences have only involved one-time non-complex traumas. There is evidence that the consequences of one-time traumas are different than those of continuous, complex traumas, such as child abuse. Furthermore, betrayal trauma theory (Freyd, 1996, 2001) distinguishes traumas on the basis of two event dimensions which may elicit different reactions: life-threat (e.g. major car accident; violent rape by a stranger) and social betrayal (e.g. abuse by a close other). Betrayal trauma is perpetrated by someone who is close to the victim and/or upon whom the victim is dependent. Such events are associated with unawareness and impaired memory for the trauma, presumably for the purpose of preserving the victim-perpetrator relationship. Exposure to betrayal trauma has been associated with various negative sequelae. The primary objective of this study was to investigate the generalizability of Pennebaker's Paradigm to betrayal trauma. A secondary goal of the study was to help elucidate the mechanism behind this phenomenon by analyzing the content of the essays using Pennebaker's Linguistic Inquiry and Word Count (LIWC; Pennebaker, Francis & Booth, 2001), and rating the essays in terms of characteristics hypothesized to play important roles in the effect of writing, such as coherence, presence of emotion words, narrative point of view, and development over time. Sixty-five physically symptomatic university undergraduates (51 female, 14 male; mean age = 19.94 years, SD = 3.86) were randomly assigned to one of two writing conditions. Participants in the traumatic condition were asked to write about a distressing interpersonal event they experienced during childhood and those in the neutral condition were asked to write about how they spent their time during the previous day. They wrote about their assigned topic twice, one week apart. All participants were administered abuse inventories, and pre and posttest physical and psychological health questionnaires. Over 50% of all participants reported having experienced at least one betrayal trauma and women reported more betrayal trauma than men. Betrayal trauma and health measures were found to be negatively related. A significant gender by writing condition interaction emerged, which revealed that, in general, women in the trauma writing condition benefited more than men. Closer examination of the content and structure of the essays revealed interesting patterns between certain writing components and outcome measures. These findings suggest that it would be fruitful to consider the type of trauma experienced by a person when determining the best intervention. In addition, directing the writing process to include those components found to be related to outcomes may enhance the effectiveness of a writing intervention. This needs to be tested in a controlled experimental trial. Future research is also recommended to replicate these findings in a larger and less homogenous population.This study was made possible in part by the funding from the University of Oregon Foundation Fund for Research on Trauma and Oppression (PI, J. Freyd), University of Oregon Graduate Education Committee

Physical Health, Psychological Distress, and Betrayal Trauma

Numerous studies have revealed an association between trauma and adverse physical and mental health status. While the relation is well established, the mechanisms underlying this link are less well understood. In the current study we sought to distinguish impact on health arising from types of trauma as indicated by betrayal trauma theory (Freyd 1996, 2001), with an eye toward eventually uncovering mechanisms and developing interventions. Betrayal trauma theory distinguishes two dimensions as primary for events that cause long lasting harm to people: life-threat (e.g. major car accident; urban violence) and social betrayal (e.g. abuse by a close other). We recruited 99 community adults who reported at least 12 months of chronic medical or pain problems for a longitudinal intervention study. Participants were assessed for trauma history and physical and mental symptoms. Trauma assessment included measuring exposure to both traumas high in betrayal and traumas low in betrayal (but high in life-threat). Associations between overall trauma exposure and negative health and mental status were found. High betrayal was particularly potent. For instance, exposure to traumas with high betrayal is significantly correlated with number of physical illness symptoms (r=.37), anxiety symptoms (r = .49), and depression symptoms (r=.45). Multiple regression analyses predicting these symptoms from betrayal trauma exposure reveal that adding exposure to trauma with less betrayal into the model changes R-square statistics very little, and these changes are not significant. This pattern of results has been replicated with data recently collected in our laboratory using a different population. In addition, interesting gender effects are emerging. With the large amount of variance in symptoms predicted by exposure to high betrayal trauma, we are focusing on uncovering mechanisms and evaluating the health consequences of an intervention that involves writing about reactions to these events.This research was supported by the Northwest Health Foundation Grant Number 2001-255 Child Abuse and Health: An Intervention (Freyd, PI). The manuscript preparation was also supported in part by the Trauma and Oppression Research Fund at the University of Oregon Foundation

Lack of precision, misleading implications, and ethical issues arising from the use of the label "false memory" for errors in word memory

This information will be reported in DePrince, A.P., Allard, C., Oh, H., & Freyd, J.J. (in press). What’s in a name for memory errors? Implications and ethical issues arising from the use of the label “false memory” for errors in memory for details. Ethics & Behavior.Since 1995, psychologists have increasingly used the term "false memory" to describe memory errors for details (e.g., errors for words learned in a list); such errors in details were once referred to by other terms, such as "intrusions". "False memories" is also used to refer to suggestibility experiments in which whole events are apparently confabulated and in media accounts of contested memories of childhood abuse. We examined use of the term "false memory/ies" to describe 1.) suggestibility for, or confabulation of, entire events or 2.) errors in details. Using the keyword "false memory/ies", journal articles published between 1992 and August 2003 were identified. Editorials, commentaries, responses to other articles, and book reviews were excluded. Of the 397 articles collected, 222 (55.9%) were empirical reports. Approximately 70% of empirical articles used the term "false memory/ies" to refer to error in details. The shift in language away from prior terms such as "memory intrusions" to a new use of the term "false memory" presents serious ethical challenges to the data-interpretation process by encouraging over-generalization and misapplication of research findings on word memory to social issues. The research and ethical implications of the new use of the term will be discussed

Adult trauma and adult symptoms: Does childhood trauma drive the relationship?

We used structural modeling to examine observed relationships between childhood trauma, adult trauma, and adult dissociation and mental health. We propose a model in which childhood betrayal trauma predicts adult betrayal trauma and dissociation, and dissociation predicts mental health. Paths between adult betrayal trauma and dissociation, and adult betrayal trauma and mental health were set at zero. This model was tested using questionnaire data from 307 undergraduates. The model fit the data very well (comparative fit index = .98, chi-square(df = 8) = 21.99), and performed as well as other less parsimonious models. Alternative equivalent models and implications of these findings are discussed. The pattern of parameter estimates generated for this model suggests that childhood trauma drives the relationship between trauma and symptoms.Supported in part by the Trauma and Oppression Research Fund at the University of Oregon Foundation

Are All Traumatic Events Equal? Further Research Using the BBTS

The Brief Betrayal Trauma Survey (BBTS; Goldberg & Freyd, 2004) assesses potentially traumatic childhood and adulthood experiences, which can be categorized as high in betrayal (HB) or low in betrayal (LB) depending on whether the perpetrator was close or not close to the respondent. Previous research has provided support for betrayal trauma theory (Freyd, 1996) in revealing that, while LB predicts psychological distress in adulthood, HB traumas explain significantly more of the predictive variance. In the present study, changes in the BBTS were introduced in an effort to increase its interpretability and validity, and further tests of betrayal trauma theory are being conducted. Our preliminary findings are consistent with previous research in that HB events significantly predict higher levels of dissociation, depression, and anxiety symptoms than do LB events. In our sample of young adults, childhood HB events alone, and not events experienced in adulthood, predict increased symptomatology. Furthermore, those childhood HB events that were directly experienced explain the most variance, whereas those that were witnessed or heard about do not contribute to the predictive associations. These findings have implications for conceptualizations of traumas, their sequelae, and their treatment.Supported in part by the Trauma and Oppression Research Fund at the University of Oregon Foundation

Prevalence and Mental Health Correlates of Insomnia in First-Encounter Veterans with and without Military Sexual Trauma

Study objectivesThere is limited information about prevalence of insomnia in general populations of veterans of recent wars in Iraq and Afghanistan. No studies have examined insomnia in veterans with military sexual trauma (MST). We assess prevalence of insomnia, identify types of services sought by veterans with insomnia, and examine correlates of insomnia in veterans with and without MST.DesignA cross-sectional study of first-encounter veterans registering to establish care.SettingVeteran Affairs San Diego Healthcare System.ParticipantsNine hundred seventeen veterans completed questionnaires assessing insomnia, MST, service needs, traumatic brain injury, resilience, and symptoms of depression, posttraumatic stress disorder (PTSD), pain, alcohol misuse, and hypomania.InterventionsN/A.Measurements and results53.1% of veterans without MST and 60.8% of veterans with MST had clinically significant insomnia symptoms, with the MST subsample reporting more severe symptoms, P < 0.05. Insomnia was more prevalent than depression, hypomania, PTSD, and substance misuse. Veterans with insomnia were more likely to seek care for physical health problems and primary care versus mental health concerns, P < 0.001. For the veteran sample without MST, age, combat service, traumatic brain injury, pain, and depression were associated with worse insomnia, P < 0.001. For the MST subsample, employment status, pain, and depression were associated with worse insomnia, P < 0.001.ConclusionsStudy findings indicate a higher rate of insomnia in veterans compared to what has been found in the general population. Insomnia is more prevalent, and more severe, in veterans with military sexual trauma. Routine insomnia assessments and referrals to providers who can provide evidence-based treatment are crucial