Postdoctoral Fellows
Center for Gerontology and Healthcare Research
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Hace Oh
Hyesung (Hace) Oh, Ph.D., MBA, MPH is an AHRQ T32 Postdoctoral Fellow working with the Center for Advancing Health Policy through Research (CAPHR) and the Center for Gerontology and Healthcare Research (CGHCR) at the Brown University School of Public Health. He completed his Ph.D. in Health Services Research and his Master's in Economics at Brown University. He is passionate about understanding the impacts of health care firm behavior on health care markets, patient health, and health care disparities. He is thankful for the opportunity to collaborate with experts at CAPHR and CGHCR to help improve the financing, operations, and outcomes of the rapidly consolidating U.S. health care system.
Center for Alcohol and Addiction Studies
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Abhishek Aggarwal
Abhishek Aggarwal, Ph.D. (he/him) is a postdoctoral research associate at the Center for Alcohol and Addiction Studies (CAAS) at Brown University School of Public Health. He completed his Ph.D. in Health Behavior, Education, and Promotion from the University of South Carolina. He works at the intersection of HIV prevention behaviors and substance use among vulnerable groups. He aims to leverage real-time data-capturing techniques to investigate the dynamics of socio-ecological determinants of substance use, as well as develop and evaluate digital interventions that provide contextualized and timely support.
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Mariel Bello
Mariel Bello is a NIDA T32 Postdoctoral Research Fellow in the Center for Alcohol and Addiction Studies at Brown University School of Public Health. She earned her Ph.D. in Clinical Science from the University of Southern California in 2022, where she conducted research examining tobacco-related health disparities among socioeconomically disadvantaged racial/ethnic minority adolescents, young adults, and adults who smoke cigarettes. Her program of research focuses on the etiology and underlying mechanisms of substance use disorders in underserved populations in order to inform the development of innovative, culturally-tailored treatments for substance use in disadvantaged, minority groups. Additionally, as a pre-licensed clinical psychologist, she provides evidence-based, outpatient psychological services to clients from socially disadvantaged backgrounds in Rhode Island.
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Nicholas Bush
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Sarah Chavez
Sarah Chavez earned her Ph.D. in Interdisciplinary Research on Substance Use, a joint doctoral program from the University of California, San Diego, and San Diego State University. She is currently completing an NIAAA T32 postdoctoral fellowship at the Center for Alcohol and Addiction Studies at Brown University. Her research interests include identifying risk and protective factors for alcohol use, exploring racial and ethnic differences in alcohol-related outcomes, and investigating how childhood adversity contributes to alcohol in Latinx young adults. She is also committed to developing culturally tailored, alcohol-specific interventions for this population to reduce existing health disparities.
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Julie Cristello
Julie Cristello earned her Ph.D. in Clinical Science in Child and Adolescent Psychology from Florida International University. She completed the Clinical Psychology Predoctoral Internship Training Program at the Warren Alpert Medical School of Brown University. Her research focuses on the etiology of adolescent substance use, particularly the influence of online (e.g., social media) and offline (e.g., parents, peers) social contexts on alcohol and drug use. The overarching goal of her work is to identify modifiable targets for interventions as a way to reduce substance use and its associated consequences among youth.
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Erin Ferguson
Erin Ferguson earned her Ph.D. in clinical and health psychology at the University of Florida. She completed the Clinical Psychology Internship Training Program at the Warren Alpert Medical School of Brown University in 2023. Her research interests are in contextual factors associated with alcohol and cannabis use among those with comorbid chronic health conditions (e.g. HIV, pain), and developing substance use interventions for integrated care settings.
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Silvi Goldstein
Silvi Goldstein earned her Ph.D. in Clinical Psychology from the University of Rhode Island. She completed the Clinical Psychology Predoctoral Internship Program at the Warren Alpert Medical School of Brown University. Her research assesses harm reduction and trauma-informed treatment approaches for substance use, as well as individual- and systems-level factors that increase risk for substance-related health inequities among minoritized populations.
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Emily Helminen
Emily Helminen completed a Ph.D. in school psychology at Syracuse University and is currently completing a NIDA T32 postdoctoral fellowship at the Center for Alcohol and Addiction Studies at Brown University. Their main research interests include: 1) developing and testing compassion-based interventions to improve mental and behavioral health among sexual and gender minority people with a focus on co-occurring posttraumatic stress symptoms and substance use, and 2) understanding the physiological (e.g., stress reactivity) and psychological (e.g., shame) mechanisms by which compassion-based interventions are effective.
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Lindy Howe
Lindy Howe earned her Ph.D. in Clinical Psychology at Indiana University and completed the Clinical Psychology Internship Training Program at the Warren Alpert Medical School of Brown University in 2024. She is currently a postdoctoral fellow on the NIDA T32 at the Center for Alcohol and Addiction Studies at Brown University. Her research focuses on the etiology and consequences of alcohol and cannabis use across various populations, often employing ecological momentary assessment (EMA). Emerging interests include ambulatory assessment methods and the interplay between perinatal substance use and mental health.
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Molly Maloney
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Sarah Maloney
Sarah Maloney received a B.S. in Psychology at Northern Kentucky University and completed her MS in Psychology and Ph.D. in Health Psychology at Virginia Commonwealth University. She is currently an Alcohol and Addiction Studies (CAAS) T32 postdoctoral fellow in the Department of Behavioral and Social Sciences working with Laura Stroud and Jennifer Tidey. Her research interests are focused on factors that influence the abuse liability of nicotine, tobacco, and cannabis use.
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Tessa Nalven
Tessa's research interests focus on health disparities in substance use. In particular, she has an interest in protective factors for substance use in Multiracial individuals and people from other minoritized racial/ethnic groups. Tessa completed her Ph.D. in Clinical Psychology at the University of Rhode Island and received her B.S. in psychology at the University of Massachusetts Amherst.
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Roselyn Peterson
Roselyn Peterson completed her undergraduate studies at Seattle University and earned her M.S. and Clinical Psychology Ph.D. from the University of Central Florida, where she developed the Sexual and Negative Dating Inventory (SANDI). Her research focuses on sexual violence, alcohol use, and protective behavioral strategies.
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Chanda Phelan
Chanda Phelan is interested in researching human-computer interaction focused on the opportunities and challenges of integrating technology into substance use disorder (SUD) treatment, and understanding how technology is used during the recovery journey. She completed her Ph.D. at the University of Michigan and focused on the opportunities, threats, and strategies for technology in SUD.
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Megan Strowger
Megan Strowger completed her undergraduate studies at Drexel University and earned her Ph.D. in health psychology at Old Dominion University. Her research interests include in-person and online social influences on alcohol use among young adults, social network and longitudinal methods, and developing alcohol interventions for young adults which also focus on the impact of alcohol-related social media.