Britney M. Wardecker

The Nature of Processing Speed Deficits in Traumatic Brain Injury: is Less Brain More?

The cognitive constructs working memory (WM) and processing speed are fundamental components to general intellectual functioning in humans and highly susceptible to disruption following neurological insult. Much of the work to date examining speeded working memory deficits in clinical samples using functional imaging has demonstrated recruitment of network areas including prefrontal cortex (PFC) and anterior cingulate cortex (ACC). What remains unclear is the nature of this neural recruitment. The goal of this study was to isolate the neural networks distinct from those evident in healthy adults and to determine if reaction time (RT) reliably predicts observable between-group differences. The current data indicate that much of the neural recruitment in TBI during a speeded visual scanning task is positively correlated with RT. These data indicate that recruitment in PFC during tasks of rapid information processing are at least partially attributable to normal recruitment of PFC support resources during slowed task processing.

The Less BOLD, the Wiser: Support for the latent resource hypothesis after traumatic brain injury

Previous studies of the BOLD response in the injured brain have revealed neural recruitment relative to controls during working memory tasks in several brain regions, most consistently the right prefrontal cortex and anterior cingulate cortices. We previously proposed that the recruitment observed in this literature represents auxiliary support resources, and that recruitment of PFC is not abnormal or injury specific and should reduce as novelty and challenge decrease. The current study directly tests this hypothesis in the context of practice of a working memory task. It was hypothesized that individuals with brain injury would demonstrate recruitment of previously indicated regions, behavioral improvement following task practice, and a reduction in the BOLD signal in recruited regions after practice. Individuals with traumatic brain injury and healthy controls performed the n‐back during fMRI acquisition, practiced each task out of the scanner, and returned to the scanner for additional fMRI n‐back acquisition. Statistical parametric maps demonstrated a number of regions of recruitment in the 1‐back in individuals with brain injury and a number of corresponding regions of reduced activation in individuals with brain injury following practice in both the 1‐back and 2‐back. Regions of interest demonstrated reduced activation following practice, including the anterior cingulate and right prefrontal cortices. Individuals with brain injury demonstrated modest behavioral improvements following practice. These findings suggest that neural recruitment in brain injury does not represent reorganization but a natural extension of latent mechanisms that engage transiently and are contingent upon cerebral challenge. Hum Brain Mapp, 2012.

Prenatal hormones in first‐time expectant parents: Longitudinal changes and within‐couple correlations

Expectant mothers experience marked hormone changes throughout the transition to parenthood. Although similar neuroendocrine pathways are thought to support maternal and paternal behavior, much less is known about prenatal hormone changes in expectant fathers, especially in humans.

Dispositional optimism and outcome following traumatic brain injury

Objective: Despite vast literature examining the predictors of patient outcome following traumatic brain injury (TBI), the complicated relationship between personality and psychological, cognitive and functional outcomes remains poorly understood. The present study examined the relationship between the personality trait of dispositional optimism (DO) and outcome after moderate and severe TBI in the context of a proposed theoretical model. Methods: Forty-five individuals who had sustained moderate-to-severe TBI were recruited through mailings and completed the Symptom Checklist Questionnaire-90 Revised (SCL-90-R), the Telephone Interview for Cognitive Status (TICS), the Craig Handicap Assessment Reporting Technique (CHART) and the Life Orientation Test-Revised (LOT-R). Analyses were conducted to test a model predicting the relationship between personality and patient outcome after TBI. Results: DO was significantly correlated with psychological distress, but did not predict functional outcome. In addition, two significant mediating relationships were demonstrated: (1) psychological distress was shown to mediate the relationship between dispositional optimism and cognitive ability and (2) cognitive ability mediated the relationship between psychological distress and functional outcome. Conclusion: These findings illustrate that higher levels of DO in individuals sustaining moderate-to-severe TBI are related to better psychological functioning which in turn predicts improved cognitive and functional outcomes.

Prospective and dyadic associations between expectant parents’ prenatal hormone changes and postpartum parenting outcomes

During the transition to parenthood, both men and women experience hormone changes that are thought to promote parental care. Yet very few studies have explicitly tested the hypothesis that prenatal hormone changes are associated with postpartum parenting behavior. In a longitudinal study of 27 first-time expectant couples, we assessed whether prenatal hormone changes were moderated by self- and partner-reported parenting outcomes at 3 months postpartum. Expectant fathers showed prenatal declines in testosterone and estradiol, and larger declines in these hormones were associated with greater contributions to household and infant care tasks postpartum. Women whose partners showed larger testosterone declines also reported receiving more support and more help with household tasks. Expectant mothers showed prenatal increases in testosterone and estradiol, and larger increases in these hormones were associated with lower partner-rated support. Together, our findings provide some of the first evidence that prenatal hormone changes may indeed be functional and that the implications of these changes may be detectable by co-parents.

Individual differences in attachment are associated with usage and perceived intimacy of different communication media

Effective communication is vital to the health and functioning of romantic relationships. Technology use is becoming more pervasive, making it more important than ever to understand which forms of media enhance communication in close relationships. People differ in which communication methods they prefer, and it is important to understand how people perceive and use various media. Our study uses an attachment theory framework to explore how people perceive the intimacy of different media and their preferred methods of communication with romantic partners. We collected online survey data from partnered individuals regarding their romantic attachment orientation, perceptions of the intimacy of various media (face-to-face, phone call, text message, email), and preferred use of those media for communicating with romantic partners. People with a more avoidant attachment orientation (i.e., who prefer self-reliance over interdependence) were less likely to prefer communication methods that are generally perceived as more close and immediate (e.g., face-to-face); however, our findings suggest that avoidant individuals prefer not to use these methods because they perceive them to be less intimate and less likely to resolve interpersonal conflicts. Our findings suggest that certain forms of communication may be more beneficial for avoidant individuals and their romantic relationships. Attachment orientation might influence types of communication between partners.Avoidant people were less likely to prefer methods perceived as more immediate.Avoidant people see face-to-face as less close and less likely to resolve conflict.Certain communication may be better for avoidant people and their relationships.

Life Course Socioeconomic Status, Daily Stressors, and Daily Well-Being: Examining Chain of Risk Models

Objectives This article models the chain of risk that links life course socioeconomic status (SES), daily stressor exposure and severity, and daily well-being. Method Data from the main survey and the daily diary project of the Midlife in the United States (MIDUS) Refresher study were combined, resulting in 782 participants (55.6% female; age 25-74, Mage = 47.9) who reported on 5,849 days of information on daily stressors and daily well-being. Data were measured at both person and day levels. Between-person predictor variables include childhood SES, education, and adult SES. Within-person daily variables assessed exposure to daily stressors, severity of daily stressors, positive affect, negative affect, and daily physical symptoms. We contrasted hypothesized models, the chain of risk trigger effect model versus the additive model within a multilevel structural equation modeling framework. Results The influences of life course SES and daily stressor exposure and severity on daily well-being were better described by the chain of risk additive model than the chain of risk trigger effect model. Childhood SES was directly and indirectly (through education, adult SES, and daily stressor exposure and severity) associated with daily well-being (in between-person level), especially daily physical symptoms and daily negative affect. Discussion Childhood may be a sensitive period that has salient implications for day-to-day well-being later in life.

Life Satisfaction Across Adulthood in Bisexual Men and Women: Findings from the Midlife in the United States (MIDUS) Study

The number of lesbian, gay, and bisexual (LGB) adults aged 50 and older is projected to reach 5 million in the U.S. by 2030 (Fredriksen-Goldsen, Kim, Shiu, Goldsen, & Emlet, 2015). Older bisexuals experience more negative mental and physical health outcomes when compared to both heterosexuals and other sexual minorities (Fredriksen-Goldsen, Shiu, Bryan, Goldsen, & Kim, 2017). As bisexuals are the numeric majority of sexual minorities in the U.S. (Herbenick et al., 2010), bisexual aging processes are critical to understand if researchers wish to reduce sexual minority health disparities and promote healthy aging. In the current study, we use a national probability sample of adults from the Midlife in the United States (MIDUS) study to assess life satisfaction across an 18-year period. We aimed to identify whether life satisfaction—an indicator of psychological health and well-being—is similar for same-age bisexual, lesbian and gay, and heterosexual midlife individuals, and whether sexual orientation predicts change in life satisfaction across adulthood. Further, we tested whether life satisfaction among bisexuals changes at the same rate and in the same pattern as for lesbian, gay, and heterosexual individuals. Overall, we found a linear pattern of increase in life satisfaction across adulthood. However, when we accounted for sexual orientation, a different pattern emerged for bisexuals. Whereas heterosexuals and lesbian and gay individuals experienced increases in life satisfaction across adulthood, bisexuals’ life satisfaction did not increase over this period. Implications for bisexual health and well-being are discussed.

Out of the Mouths of Babes: Links Between Linguistic Structure of Loss Narratives and Psychosocial Functioning in Parentally Bereaved Children: Loss Narratives and Functioning in Children

This study examined links between the language bereaved children use to describe the death of their caregiver and childrens psychological/behavioral functioning and coping strategies. Participants included 44 children (54.5% male) aged 7 to 12 (M = 9.05) years who were bereaved by the death of a caregiver. Children were assessed via self- and caregiver-report measures and an in-person interview regarding the loss of their caregiver. Childrens loss narratives gathered through in-person interviews were transcribed and subjected to textual analysis. Linguistic categories included pronouns and verb tense. Drawing from linguistic and self-distancing theories, we hypothesized that childrens use of language reflecting self-distancing (third-person pronouns and past tense) or social connectedness (first-person plural pronouns) would be negatively associated with psychological/behavioral distress and avoidant coping. Similarly, we expected that childrens use of self-focused language (first-person singular pronouns and present tense) would be positively associated with psychological/behavioral distress and avoidant coping. As hypothesized, preliminary findings suggest that children who employed more self-distancing language and used more social connectedness words reported less avoidant coping, rs = .40-.42. Also as hypothesized, children who employed more self-focused language had higher levels of self-reported posttraumatic stress symptoms, r = .54, and avoidant coping, r = .54, and higher parent-reported psychological/behavioral distress, r = .43. Implications for theory-building, risk screening, and directions for future research with bereaved youth are discussed.

Emotion Language in Trauma Narratives Is Associated With Better Psychological Adjustment Among Survivors of Childhood Sexual Abuse

Traumatized individuals are often encouraged to confront their experiences by talking or writing about them. However, survivors of childhood sexual abuse (CSA) might find it especially difficult to process abuse experiences, particularly when the abuse is more severe. The current study examined whether CSA survivors who use emotion language when describing their abuse experiences exhibit better mental health. We analyzed the trauma narratives of 55 adults who, as children, were part of a larger study of the long-term emotional effects of criminal prosecutions on CSA survivors. Abuse narratives were analyzed using the Linguistic Inquiry and Word Count program. We examined whether positive and negative emotion language in participants’ abuse narratives were associated with self- and caregiver-reported mental health symptoms and whether these associations differed by abuse severity. As hypothesized, participants who used more positive and negative emotion language had better psychological outcomes, especially when the abuse was more severe.