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Suarez GL, Burt SA, Gard AM, Klump KL, Hyde LW. Exposure to community violence as a mechanism linking neighborhood disadvantage to amygdala reactivity and the protective role of parental nurturance. Dev Psychol 2024; 60:595-609. [PMID: 38386381 DOI: 10.1037/dev0001712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Emerging literature links neighborhood disadvantage to altered neural function in regions supporting socioemotional and threat processing. Few studies, however, have examined the proximal mechanisms through which neighborhood disadvantage is associated with neural functioning. In a sample of 7- to 19-year-old twins recruited from disadvantaged neighborhoods (354 families, 708 twins; 54.5% boys; 78.5% White, 13.0% Black, 8.5% other racial/ethnic group membership), we found that exposure to community violence was related to increased amygdala reactivity during socioemotional processing and may be one mechanism linking neighborhood disadvantage to amygdala functioning. Importantly, parenting behavior appeared to modulate these effects, such that high parental nurturance buffered the effect of exposure to community violence on amygdala reactivity. These findings elucidate the potential impact of exposure to community violence on brain function and highlight the role parents can play in protecting youth from the neural effects of exposure to adversity. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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Affiliation(s)
| | | | | | | | - Luke W Hyde
- Department of Psychology, University of Michigan
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Vom Hofe I, Stricker BH, Vernooij MW, Ikram MK, Ikram MA, Wolters FJ. Antidepressant use in relation to dementia risk, cognitive decline, and brain atrophy. Alzheimers Dement 2024. [PMID: 38561253 DOI: 10.1002/alz.13807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 02/01/2024] [Accepted: 02/26/2024] [Indexed: 04/04/2024]
Abstract
INTRODUCTION We aimed to assess the effect of antidepressant use on dementia risk, cognitive decline, and brain atrophy. METHODS In this prospective cohort study, we included 5511 dementia-free participants (Mini-Mental State Examination [MMSE] > 25) of the Rotterdam study (57.5% women, mean age 70.6 years). Antidepressant use was extracted from pharmacy records from 1991 until baseline (2002-2008). Incident dementia was monitored from baseline until 2018, with repeated cognitive assessment and magnetic resonance imaging (MRI) every 4 years. RESULTS Compared to never use, any antidepressant use was not associated with dementia risk (hazard ratio [HR] 1.14, 95% confidence interval [CI] 0.92-1.41), or with accelerated cognitive decline or atrophy of white and gray matter. Compared to never use, dementia risk was somewhat higher with tricyclic antidepressants (HR 1.36, 95% CI 1.01-1.83) than with selective serotonin reuptake inhibitors (HR 1.12, 95% CI 0.81-1.54), but without dose-response relationships, accelerated cognitive decline, or atrophy in either group. DISCUSSION Antidepressant medication in adults without indication of cognitive impairment was not consistently associated with long-term adverse cognitive effects. HIGHLIGHTS Antidepressant medications are frequently prescribed, especially among older adults. In this study, antidepressant use was not associated with long-term dementia risk. Antidepressant use was not associated with cognitive decline or brain atrophy. Our results support safe prescription in an older, cognitively healthy population.
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Affiliation(s)
- Ilse Vom Hofe
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Bruno H Stricker
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Meike W Vernooij
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Radiology & Nuclear Medicine and Alzheimer Centre Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M Kamran Ikram
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Neurology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M Arfan Ikram
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Frank J Wolters
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Radiology & Nuclear Medicine and Alzheimer Centre Erasmus MC, Erasmus University Medical Center, Rotterdam, The Netherlands
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Maddern XJ, Lawrence AJ, Campbell EJ. Electric barrier-induced voluntary abstinence reduces alcohol seeking in male, but not female, iP rats. Behav Neurosci 2024; 138:1-14. [PMID: 37589722 DOI: 10.1037/bne0000566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
Maintaining abstinence and preventing relapse are key to the successful recovery from alcohol use disorder. There are two main ways individuals with alcohol use disorder abstain from alcohol use: forced (e.g., incarceration) and voluntary. Voluntary abstinence is often evoked due to the negative consequences associated with excessive alcohol consumption. This study investigated relapse-like behavior to alcohol seeking following acute, forced, and voluntary abstinence. Male rats had increased operant self-administration responding throughout training compared to females; however, females consumed greater amounts of alcohol in g/kg. Both male and female rats achieved voluntary abstinence, which was induced using an electric barrier on the operant chamber floor with alcohol readily available during this period. Interestingly, male rats that underwent voluntary abstinence displayed reduced alcohol seeking compared to males in the acute and forced abstinence groups. This difference in alcohol seeking behavior across abstinence groups was not observed in female rats. Quantification of neuronal activation (Fos protein) revealed numerous brain regions (e.g., ventral subiculum and lateral habenula) to be associated with the reduced reinstatement propensity seen in male rats that underwent voluntary abstinence. Additionally, hierarchical clustering found enhanced functional connectivity and coordination in the male voluntary abstinence group compared to the male forced abstinence group. Collectively, these data implicate a sexual dimorphism in the effect that voluntary abstinence, at least in the model employed here, has on relapse-like behavior. This maybe driven by reduced neuronal activation at a network level and enhanced functional connectivity and integration. (PsycInfo Database Record (c) 2024 APA, all rights reserved).
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Affiliation(s)
- Xavier J Maddern
- Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, University of Melbourne
| | - Andrew J Lawrence
- Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, University of Melbourne
| | - Erin J Campbell
- Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, University of Melbourne
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Qiao X, Wolters L, Howard JD. Mental representations mediate aversive learning in humans. Behav Neurosci 2023; 137:319-329. [PMID: 37410433 DOI: 10.1037/bne0000565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
Mental representations of stimuli that are not physically present are critical for a range of cognitive capacities, including perception, memory, and learning. Overly robust mental representations, however, can contribute to hallucinations in healthy individuals and those diagnosed with psychotic illness. Measuring the strength of mental representations can thus provide insight into how the contents of the mind influence both adaptive and maladaptive behaviors. In rodents, the robustness of mental representations has been tested using the representation-mediated learning (RML) task, in which animals respond less to a cue after a stimulus that has previously been associated with this cue has been paired with illness. This suggests that the mental representation of the cue enters into a negative association during aversive learning, even though the cue is not physically present. Here, we developed a human version of the RML task in which participants initially learned associations between two visual symbols and two different appetitive food odors. Preference for the food odors was then tested immediately before and after a session in which one symbol was paired with an aversive noise. We observed that mediated learning, in the form of selective decrease in preference for the odor previously paired with the noise-predicting symbol, was directly proportional to direct aversive learning for the symbols themselves. These findings suggest that a mental representation of the odor entered into a negative association with the sound and pave the way for future studies aimed at characterizing the neural circuits of mediated learning in the human brain. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Freitag S, Kapoor S, Lamis DA. Childhood maltreatment, impulsive aggression, and suicidality among patients diagnosed with bipolar disorder. Psychol Trauma 2022; 14:1256-1262. [PMID: 35084918 DOI: 10.1037/tra0001218] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE Bipolar disorder is associated with a history of childhood maltreatment, impulsive aggression, and lethal suicide attempts. Often, aggression and violence prevent the diagnosed individual from receiving timely access to mental health care, leading to adverse outcomes such as repeated psychiatric hospitalization or even incarceration. METHOD In this study, we recruited a sample of 150 low-income patients with bipolar disorder from an outpatient behavioral health clinic affiliated with an urban public hospital in Southeastern United States. We explored whether different types of childhood maltreatment (physical, sexual, emotional) are associated with impulsive aggression among individuals with bipolar disorder. Additionally, we examined whether impulsive aggression is related to suicidality. Finally, we sought to test the potential mediated effect of impulsive aggression on the relationship between childhood maltreatment and suicidality. RESULTS Findings suggest that all direct associations were significant and that impulsive aggression was a significant mediator in the relationship between childhood emotional and sexual abuse. However, when childhood physical abuse was included as an independent variable in the model, impulsive aggression did not mediate the association, even though impulsive aggression was related to suicidality. CONCLUSION Results from this study suggest that impulsive aggression exerts a wide-ranging impact on suicidality in the context of childhood trauma in those with bipolar disorder. In the future, targeted interventions to address the underlying etiologies of aggression may translate into an improved quality of life, decreased rates of suicidality, and positive clinical outcomes among individuals with bipolar disorder. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
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Affiliation(s)
- Stephanie Freitag
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine
| | - Shweta Kapoor
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine
| | - Dorian A Lamis
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine
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Abstract
Animals routinely learn to associate environmental stimuli and self-generated actions with their outcomes such as rewards. One of the most popular theoretical models of such learning is the reinforcement learning (RL) framework. The simplest form of RL, model-free RL, is widely applied to explain animal behavior in numerous neuroscientific studies. More complex RL versions assume that animals build and store an explicit model of the world in memory. To apply these approaches to explain animal behavior, typical neuroscientific RL models make implicit assumptions about how real animals represent the passage of time. In this perspective, I explicitly list these assumptions and show that they have several problematic implications. I hope that the explicit discussion of these problems encourages the field to seriously examine the assumptions underlying timing and reinforcement learning. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
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Bonilla-Jaime H, Zeleke H, Rojas A, Espinosa-Garcia C. Sleep Disruption Worsens Seizures: Neuroinflammation as a Potential Mechanistic Link. Int J Mol Sci 2021; 22:12531. [PMID: 34830412 PMCID: PMC8617844 DOI: 10.3390/ijms222212531] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/16/2021] [Accepted: 11/18/2021] [Indexed: 12/13/2022] Open
Abstract
Sleep disturbances, such as insomnia, obstructive sleep apnea, and daytime sleepiness, are common in people diagnosed with epilepsy. These disturbances can be attributed to nocturnal seizures, psychosocial factors, and/or the use of anti-epileptic drugs with sleep-modifying side effects. Epilepsy patients with poor sleep quality have intensified seizure frequency and disease progression compared to their well-rested counterparts. A better understanding of the complex relationship between sleep and epilepsy is needed, since approximately 20% of seizures and more than 90% of sudden unexpected deaths in epilepsy occur during sleep. Emerging studies suggest that neuroinflammation, (e.g., the CNS immune response characterized by the change in expression of inflammatory mediators and glial activation) may be a potential link between sleep deprivation and seizures. Here, we review the mechanisms by which sleep deprivation induces neuroinflammation and propose that neuroinflammation synergizes with seizure activity to worsen neurodegeneration in the epileptic brain. Additionally, we highlight the relevance of sleep interventions, often overlooked by physicians, to manage seizures, prevent epilepsy-related mortality, and improve quality of life.
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Affiliation(s)
- Herlinda Bonilla-Jaime
- Departamento de Biología de la Reproducción, Área de Biología Conductual y Reproductiva, Universidad Autónoma Metropolitana-Iztapalapa, Ciudad de Mexico CP 09340, Mexico;
| | - Helena Zeleke
- Neuroscience and Behavioral Biology Program, College of Arts and Sciences, Emory University, Atlanta, GA 30322, USA;
| | - Asheebo Rojas
- Department of Pharmacology and Chemical Biology, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Claudia Espinosa-Garcia
- Department of Pharmacology and Chemical Biology, School of Medicine, Emory University, Atlanta, GA 30322, USA
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Post LM, Held P, Smith DL, Black K, Van Horn R, Pollack MH, Rothbaum BO, Rauch SAM. Impact of intensive treatment programs for posttraumatic stress disorder on suicidal ideation in veterans and service members. Psychol Serv 2021; 18:671-678. [PMID: 33829834 PMCID: PMC8497634 DOI: 10.1037/ser0000518] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Intensive treatment programs (ITPs) are treating veterans with posttraumatic stress disorder (PTSD) and suicidal ideation (SI). The reduction of SI is a target to the abatement of suicide risk. This study examined whether ITPs utilizing PTSD treatments reduce SI and whether SI reduction is associated with PTSD symptom improvement. Veterans (N = 684) enrolled in a 2-week Prolonged Exposure (PE)-ITP or a 3-week Cognitive Processing Therapy (CPT)-ITP. Study data were drawn from self-report measures [PTSD Checklist for DSM-5 (PCL-5); item 9 of the Patient Health Questionnaire-9 (PHQ-9)] administered at intake and throughout treatment. The ITPs produced large treatment effects for PTSD. SI scores also decreased over time. Lower PTSD symptom severity was associated with less severe SI in both the PE-ITP and CPT-ITP. In conclusion, both PE- and CPT-ITPs effectively treat PTSD and reduce SI among veterans in as little as 2 weeks of intensive PTSD treatment. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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Affiliation(s)
- Loren M. Post
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine
| | - Philip Held
- Department of Psychiatry and Behavioral Sciences, Rush University Medical Center
| | - Dale L. Smith
- Department of Psychiatry and Behavioral Sciences, Rush University Medical Center
| | - Kathryn Black
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine
| | - Rebecca Van Horn
- Department of Psychiatry and Behavioral Sciences, Rush University Medical Center
| | - Mark H. Pollack
- Department of Psychiatry and Behavioral Sciences, Rush University Medical Center
| | - Barbara O. Rothbaum
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine
| | - Sheila A. M. Rauch
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine
- Atlanta VA Healthcare System, Mental Health Service Line, Decatur, Georgia, United States
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Greene CA, McCoach DB, Briggs-Gowan MJ, Grasso DJ. Associations among childhood threat and deprivation experiences, emotion dysregulation, and mental health in pregnant women. Psychol Trauma 2021; 13:446-456. [PMID: 33475412 PMCID: PMC8217136 DOI: 10.1037/tra0001013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Women who have experienced childhood maltreatment are at increased risk for experiencing mental health problems. When these occur during pregnancy, they are associated with birth complications and worse developmental outcomes for children. Emotion dysregulation (ED) may be an important, and potentially modifiable, mechanism that links women's maltreatment experiences with their mental health. However, there is limited information about the emotion regulation skills of pregnant women to guide treatment. The current study examines the unique effects of childhood threat (physical, sexual, and emotional abuse and exposure to violence) and deprivation (physical and emotional neglect and separation from primary caregivers) experiences on pregnant women's ED, posttraumatic stress and negative emotional symptoms, and social support. METHOD Two hundred forty-three women were recruited from an urban prenatal care clinic, the majority of whom identified as Latinx (80%) and low-income (90%). The mean age of the women was 27 years (SD = 5.5). RESULTS Structural equation modeling revealed significant indirect pathways from childhood threat experiences to posttraumatic stress and negative emotional symptoms via women's ED. In contrast, childhood deprivation experiences were associated with inattention to one's emotions and low perceived social support. CONCLUSIONS These results underscore the importance of identifying women during pregnancy who may be at risk for ED or emotional inattentiveness due to childhood maltreatment experiences and providing prevention and intervention efforts aimed at enhancing their emotional awareness and regulation. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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Affiliation(s)
- Carolyn A. Greene
- Department of Psychiatry, University of Connecticut School of Medicine
| | | | | | - Damion J. Grasso
- Department of Psychiatry, University of Connecticut School of Medicine
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Abstract
Statistical regularities in distractor location trigger suppression of high-probability distractor locations during visual search. The degree to which such suppression reflects generalizable, persistent changes in a spatial priority map has not been examined. We demonstrate that suppression of high-probability distractor locations persists after location probabilities are equalized and likely reflects a genuine reshaping of the priority map rather than more transient effects of selection history. Statistically learned suppression generalizes across contexts within a task during learning but does not generalize between task paradigms using unrelated stimuli in identical spatial locations. These findings suggest that stimulus features do play a role in learned spatial suppression, potentially gating the weights applied to a spatial priority map. However, the binding of location to context during learning is not automatic, in contrast to the previously reported interaction of location-based statistical learning and stimulus features. (PsycINFO Database Record (c) 2020 APA, all rights reserved).
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Affiliation(s)
- Mark K Britton
- Department of Psychological and Brain Sciences, Texas A&M University
| | - Brian A Anderson
- Department of Psychological and Brain Sciences, Texas A&M University
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Cross D, Vance LA, Kim YJ, Ruchard AL, Fox N, Jovanovic T, Bradley B. Trauma exposure, PTSD, and parenting in a community sample of low-income, predominantly African American mothers and children. Psychol Trauma 2018; 10:327-335. [PMID: 28481561 PMCID: PMC5677577 DOI: 10.1037/tra0000264] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVES Trauma and posttraumatic stress disorder (PTSD) are associated with problematic parenting and incidence of trauma and PTSD in children of affected parents. In communities impacted by frequent trauma, parenting may be particularly important to children's PTSD risk. The authors examined relationships among maternal and child trauma and mental health, as well as problematic parenting. METHOD The authors recruited 112 mother-child dyads (50 girls, 62 boys; ages 8-12 years old) from a community sample of low-income, primarily African American families. They examined rates of trauma exposure and PTSD symptoms in mothers and children, the association of maternal trauma and PTSD with self-reported child abuse potential and parenting stress (i.e., parental distress, dysfunctional parent-child interactions, and perceived child difficulty), and the impact of maternal trauma, PTSD, and parenting on child trauma and PTSD. RESULTS Rates of trauma and PTSD symptoms were relatively high for mothers and children and included community and family violence. Maternal trauma and PTSD predicted child abuse potential, but only maternal PTSD predicted parental distress. Neither maternal trauma nor PTSD predicted parent-reported dysfunctional parent-child interactions or child difficulty. Maternal child abuse potential and child self-reported trauma, but not maternal trauma or PTSD, significantly predicted child self-reported PTSD. Parenting stress was not associated with child PTSD. CONCLUSIONS Trauma and PTSD in parents may impact parental distress and child abuse potential, potentially increasing children's risk for not only the experience of child abuse, but also PTSD. Child and family interventions should consider child and parental trauma and PTSD as important factors to address. (PsycINFO Database Record
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Affiliation(s)
- Dorthie Cross
- Department of Psychology, Georgia Southern University
| | - L. Alexander Vance
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine
| | - Ye Ji Kim
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine
| | - Andrew L. Ruchard
- Department of Teaching and Learning Services, University of Denver Morgridge College of Education
| | - Nathan Fox
- Department of Human Development and Quantitative Methodology, University of Maryland
| | - Tanja Jovanovic
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine
| | - Bekh Bradley
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine
- Atlanta VA Medical Center
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