Sleep for Science
Staff
Orli Juarez
Orli Juarez
Supervising Research Technologist, E.P. Bradley Sleep and Chronobiology Research Lab

Hey there! I’m a senior at Rhode Island College double majoring in Psychology and Behavioral Health Studies. I completed the lab’s summer apprenticeship program in 2024, after which I transitioned to a per diem role and now work as a supervising tech. I am currently applying to clinical and counseling psych. graduate programs and have a strong interest in combining research, teaching, and practice. My primary focus is on child and adolescent anxiety and mood disorders, which I think sleep can really impact! When not working on studies, I can be found hitting the gym, curled up with a fantasy book, or grabbing an iced chai from one of my favorite RI spots.




Luna Sato
Luna Sato
Sleep And NeuroDevelopment Research Assistant, E.P. Bradley Sleep and Chronobiology Research Lab

Hi! I'm from Japan but moved to the US in 2022 to attend the University of Pennsylvania, where I graduated with a B.A. in Psychology and minors in French and Cognitive Science. My interest in sleep research was sparked when I completed my honors thesis on the effect of baseline mental health and sleep habits on a combined imagery rescripting and targeted memory reactivation intervention. I'm excited to continue learning and exploring so that I can one day become a Clinical Psychologist that specializes in sleep! Outside of the lab, I love to play the piano and oboe, complete sudoku puzzles, and cook Japanese food!




Bella Wright, M.S.
Bella Wright, M.S.
Pediatric Psychology Resident, Brown Alpert Medical School, Hasbro Children's Hospital, Bradley Hospital, E.P. Bradley Sleep Research Laboratory

I am a Pediatric Psychology Resident at Brown University’s Warren Alpert Medical School and Hasbro Children’s Hospital and a PhD candidate in Clinical Psychology at Brigham Young University. My work focuses on pediatric sleep, circadian science, and the development of accessible, evidence-based sleep interventions. I am a member of the E.P. Bradley Hospital Sleep Research Laboratory, where I work on the Sleep and Learn study, an experimental investigation of adolescent sleep restriction using multimodal methods including polysomnography, actigraphy, neuroimaging, and melatonin sampling. My primary project examines ADHD symptoms as a moderator of second-by-second attentional performance on the Psychomotor Vigilance Task (PVT), with the goal of identifying vulnerability and resilience to sleep loss during adolescence. In collaboration with Dr. Kara Duraccio, PhD, I have co-developed brief behavioral sleep interventions for school-aged children and collegiate athletes, as well as a developmentally informed framework to guide sleep assessment and treatment in accessible, real-world settings. I am passionate about translating sleep science into practical tools that support families, performance, and well-being across development. Outside of the lab, I enjoy cooking and baking, and spending time at the beach.




Frances Moriniere
Frances Moriniere
Research Student

Bio: I grew up in Texas and am currently an undergraduate at Brown University studying Cognitive Neuroscience and Entrepreneurship. My interest in sleep research began after taking Dr. Carskadon’s class, and I was excited to further explore the field through the Dement Fellowship last summer. In my free time, you can usually find me on the field hockey field, crafting, baking, or trying out new restaurants around Rhode Island.




Marie-Rachelle Narcisse Jean-Louis, PhD
Marie-Rachelle Narcisse Jean-Louis, PhD


My journey into sleep science started long before graduate school. Growing up, my school day began with a 7:20 a.m. bell. That everyday struggle with early start times stuck with me and quietly shaped how I think about human behavior and health. Although I initially trained as a health economist, earning degrees in economics, public health, and biostatistics, I never lost sight of the fundamental importance of sleep to well-being. That early curiosity eventually led me beyond economics and into the science of sleep. I completed a Master of Science in Sleep Medicine at the University of Oxford’s Sleep and Circadian Neuroscience Institute, where I deepened my understanding of sleep biology and its real-world impacts. Today, I serve as a Research Project Leader in the COBRE Center on Sleep and Circadian Rhythms in Child and Adolescent Mental Health at Brown University’s Warren Alpert Medical School, where I study how sleep patterns develop and how they interact with other domains of health. For the past eight years, my research has focused on disparities in sleep health, and more recently, I’ve been exploring a new frontier at the intersection of the oral microbiome and sleep health; two areas that seem distant yet may hold meaningful connections for adolescent sleep outcomes. Outside the lab, I enjoy practicing yoga, playing the piano, and writing poetry. It’s a privilege to contribute to a field that touches everyone, and I’m excited to continue unraveling the many ways sleep shapes human health.




Gretchen Morris
Gretchen Morris
Sleep Research Technologist, E.P. Bradley Sleep and Chronobiology Research Lab

I grew up in the beautiful state of New Hampshire, and I graduated with a B.A in Psychology from Loyola University Maryland in May 2025. My interest in sleep began when I worked as an undergraduate research assistant, with Dr. Amy Wolfson as my mentor, on an Adolescent Sleep and School Start Times project. I participated in the 2025 Summer Dement Fellowship and I began my full-time position as a tech in the lab shortly after. I am so excited to be back in New England, and I have already learned so many valuable skills in the lab. As a native New Englander, I am a huge Red Sox fan. In my free time I enjoy going on walks, working out, reading and cooking!




Bridget Berman
Bridget Berman
Laboratory Assistant, E.P. Bradley Sleep and Chronobiology Research Lab

I grew up on the South Shore of Massachusetts and received my BS in Biology and Psychology from Bridgewater State University. I worked in biotech for nine years in Boston before landing at the Bradley Sleep Lab where my love for biology and psychology meet perfectly and I am excited to contribute to the research here. In my free time I like to spend time with family, crotchet, and walk my two dogs.




Mary A. Carskadon, PhD
Mary A. Carskadon, PhD
Professor, Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University
Director, E.P. Bradley Hospital Sleep and Chronobiology Research Lab
Professor of Psychology and Director of the Centre for Sleep Research, University of South Australia

Sleep research has been very good to me! From a small-town childhood, I landed at Gettysburg College, where I studied psychology, played field hockey and tennis, and made many life-long friends. I then moved west and was a research assistant at the Stanford Sleep Lab before attending graduate school at Stanford Medical School from 1976 to 1979, receiving a Ph.D. in neuro- and biobehavioral sciences, specializing in sleep research. I worked with Dr. William C. Dement and many other wonderful scientists and students at Stanford before moving to RI to start my own research group in 1985. At Bradley Hospital and Brown University, I have been privileged to perform research supported by the NIMH, NINR, NHLBI, NIDA, NCI, NIAAA, NASA, NSF, the Sleep Research Society Foundation, Periodic Breathing Foundation, and the Grass Foundation. I have also had the great pleasure of working with a terrific group of scientists, trainees, research participants, and their families. My science has also garnered me invitations to travel all over the US and Canada, to many European countries, as well as to Israel, Saudi Arabia, Japan, Latin America, and Australia. Do science and see the world, I say! Finally, I love summertime. Thus, when it’s February in New England, you’ll find me in Adelaide, South Australia living the endless summer dream.




Jared M. Saletin, PhD
Jared M. Saletin, PhD
Associate Professor, Department of Psychiatry & Human Behavior, Alpert Medical School of Brown University
Associate Director, Sleep for Science Research Lab
Director, COBRE Sleep and Circadian Rhythms Methods Research Core
jared_saletin[at]brown[dot]edu

I grew up in Rhode Island before heading to Baltimore, MD to earn a BA in Psychological and Brain Sciences from the Johns Hopkins University. After my first year of college, I was lucky enough to work for Dr. Carskadon as a Dement Fellow, and I’ve been fascinated by sleep ever since. After working in the behavioral sleep medicine laboratory of Dr. Michael Smith at Hopkins, I moved to California and earned my PhD in Psychology from the University of California at Berkeley in the laboratory of Dr. Matthew Walker. My graduate work combined structural and functional MRI, quantitative EEG, and cognitive paradigms to examine the mechanisms underlying individual-differences in sleep and its associated cognitive functions—primarily in the domain of declarative learning and memory. In 2014, I returned to Dr. Carskadon’s laboratory at Brown as a NIMH T32 Fellow in Child Mental Health, going on to join the faculty of Brown Medical School in 2016. My current work combines the tools of cognitive neuroscience with those of child psychiatry to elucidate how sleep, and sleep loss, contribute to the deficits in cognition observed in children with ADHD. Outside the lab, you’ll likely find me in the kitchen or tending to the BBQ, and occasionally attempting to run fast(er).




David Barker, PhD
David Barker, PhD
Associate Professor, Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University
Co-Deputy Director, COBRE Sleep and Circadian Methods Research Core

Bio coming soon.




Darlynn M Rojo-Wissar, PhD, MPH
Darlynn M Rojo-Wissar, PhD, MPH
Postdoctoral STAR T32 Research Fellow, Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University

I grew up in Tucson Arizona and received my BA in Psychology and MPH in Maternal and Child Health from the University of Arizona. While at the University of Arizona, I had the pleasure of working in Dr. Richard Bootzin's, Dr. Connie Beck's, and Dr. Patricia Haynes' labs where I expanded my knowledge on sleep, health, and early life adversity. I later moved to Baltimore Maryland to complete my PhD in psychiatric epidemiology at the Johns Hopkins Bloomberg School of Public Health with Dr. Adam Spira. There I continued to study early life exposures, sleep, and health, and for my dissertation work I examined the development of infant circadian rest-activity rhythms and their links with maternal bonding and infant temperament. in 2017 I moved to Providence Rhode Island as a Childhood Stress, Trauma, and Resilience (STAR) NICHD postdoctoral research fellow, and am mentored by Dr. Stephanie Parade and Dr. Mary Carskadon. Outside of the lab I love spending time with my cats Taz, Chewie, and Elsa, gardening, and getting out into nature.




Gina M. Mason, PhD
Gina M. Mason, PhD
Postdoctoral research fellow, Sleep And NeuroDevelopment Program; Department of Psychiatry & Human Behavior, Alpert Medical School of Brown University

I was born at Mountain Home Air Force Base, Idaho, and I grew up mainly in Italy and Germany (with a brief period in Pennsylvania) until age 11, when my family and I settled in Arizona. I completed my Bachelor’s degree in Molecular-Cellular Biology and Psychology at the University of Arizona in Tucson, where I was fortunate to have my first experiences in sleep and neurodevelopmental research with Drs. Jamie Edgin and Lynn Nadel in the Down Syndrome Research Group. After completing an honors thesis exploring background genetic correlates of ADHD profiles in Down syndrome, I moved to Cornell University in Ithaca, NY, where I completed my Ph.D. with Dr. Michael Goldstein examining social contributions to infant attentional organization using micro-behavioral and experimental methods. In2018, I joined the laboratory of Dr. Rebecca Spencer as a postdoc, where I gained deeper insights into the crucial role of sleep for memory and learning across early development. I am excited to continue my work in developmental sleep science here at the Sleep for Science Research Lab with Dr. Jared Saletin, as I help to investigate how sleep loss impacts brain connectivity and cognitive functioning in children with and without ADHD. Outside of the lab, you may find me exploring the outdoors, admiring local art, or curled up on a couch playing video games with my partner and family.




Caroline Gredvig-Ardito
Caroline Gredvig-Ardito
Data Coordinator, E.P. Bradley Sleep and Chronobiology Research Lab.

My father was in the military so I grew up in a lot of different places. I was born in Naples, Italy and from there we moved to Dallas, Texas. My family ultimately settled in Portland, Oregon when I was 13, and most of my family still lives there. I graduated from the University of Oregon with a BA in Psychology. I worked as a counselor with adolescents in Oregon and in San Francisco. My husband and I moved to Rhode Island in 2001 and I’ve been working in research since then. Initially I worked at Brown’s Department of Psychiatry and Human Behavior, and recently I was at the Centers for Behavioral and Preventive Medicine at The Miriam Hospital. I’ve always had in interest in better understanding the relationship between lifestyle, stress and health outcomes. I am excited to learn more about the science of sleep and the complexities of the data collected in the lab. Outside the lab I enjoy music, movies, traveling, and exploring all the natural beauties Rhode Island has to offer.




Cristal L. Medeiros
Cristal L. Medeiros
COBRE Research Administrative Coordinator

I grew up in southeastern Massachusetts and have lived in Florida, South Carolina, and Colorado. I completed by bachelor’s in Social and Health Services/Healthcare Administration at Roger Williams University. I have formal training in massage therapy and conducting infant massage trainings, sparked an interest in infant sleep and circadian rhythms. In my free time, I love to hike, do yoga, and spend time with my family.




Christine Hawkinson
Christine Hawkinson
Administrative Assistant, E.P. Bradley Sleep and Chronobiology Research Lab

I grew up in Providence, Rhode Island and am happy to be back in the Ocean State after spending much of my adult life in New York (City and Long Island) and Vermont. I received my B.S. in Psychology from Fordham University in the Bronx, NY and worked in marketing and communications. I recently changed course to pursue my interest in brain health through all life stages and am thrilled to be able to support the Bradley Sleep Lab's work. When not working, you can probably find me somewhere on or near the water or hiking - probably with my Portuguese Podengo (yes, that’s a dog breed!), Maisie.




Katie Skordinski
Katie Skordinski
Supervising Sleep Research Technologist, E.P. Bradley Sleep and Chronobiology Research Lab

I'm a born and raised Texan just beginning my career in science! I graduated in 2023 with a degree in Behavioral Neuroscience from St. Edward's University in Austin, TX and have lived all over the North Texas area. I have just recently moved to Rhode Island and already love it here. I really enjoy hiking, visiting museums, reading, and enjoying the beautiful landscapes of RI.




Jayne Clark
Jayne Clark
Supervising Sleep Research Technologist, E.P. Bradley Sleep and Chronobiology Research Lab

I grew up in Texas, where I lived for my whole life until moving to the lovely state of Rhode Island to start working at the lab! I received a BFA in Studio Art with a minor in Art History, as well as a BS in Psychology from the University of North Texas. When I am not in the lab learning about sleep, I like to spend my time making oil paintings, hiking whenever I can – especially when I have the chance to head up to Vermont, roller-skating, watching movies, and exploring the various lighthouses New England has to offer!




Sinéad Moyles
Sinéad Moyles
Sleep And NeuroDevelopment Senior Research Assistant, E.P. Bradley Sleep and Chronobiology Research Lab

Hello everyone! I grew up in New York City and received my BA in Neuroscience & Behavior from Barnard College on the Upper West Side. I kept busy in the city, whether that be from playing in water polo competitions, picnicking in Central Park, or working at the Kellendonk lab studying developmental mouse models of schizophrenia. As an undergrad, I wrote my thesis on the effects of developmental inhibition of the striatal indirect pathway on motivation and dopamine release in the nucleus accumbens. In the Summer of 2023, after passing my driver's test, I moved north to spacious Rhode Island where I now spend my time working with human participants in the Sleep Lab. I have welcomed the change of scenery and pace of life since moving and I enjoy my days baking, rock climbing, and exploring the various libraries in the Ocean State!




Claire Mayew Sherman
Claire Mayew Sherman
Sleep And NeuroDevelopment Research Assistant, E.P. Bradley Sleep and Chronobiology Research Lab

Hi! I grew up in the wonderful state of Wisconsin before moving to California halfway through high school. In 2024, I graduated from UC Davis with a B.S. in Biological Psychology and a minor in Neuroscience. During my undergraduate studies, I worked in the Memory and Development Lab led by Dr. Simona Ghetti, where I became fascinated with sleep, neuroimaging, and memory. I wrote my senior thesis on success rates in neuroimaging of sleeping toddlers. In my free time, I love exploring, hiking, trying new cheeses, watching basketball, and playing with my cat, Benny!




Aashri Sadu
Aashri Sadu
Clinical Research Assistant, COBRE Sleep and Circadian Methods Core

Hi! I'm originally from Virginia, but I attended the University of Maryland, College Park and graduated in December of 2023 with a B.S. in Psychology. I grew up roaming the D.C. area, but surrounded by the rural landscapes of Virginia, so I couldn't define for you if I'm technically from the south or not. At UMD, I worked in developmental social cognitive neuroscience and did my college thesis on the differences in social nodding between Autistic and Non-Autistic teens. I'm exploring the world of sleep and neuroscience to understand anything that could affect a child's outcomes, and I hope to one day go into policy with the experience of a research psychologist. In my free time, I like to go to read, walk by the waterfront, and I'm currently attempting to relearn Latin. I'm enjoying the coasts and bodies of water in Rhode Island, but still working on finding my go-to star gazing spot!




Chloe Lambert
Chloe Lambert
Sleep Research Assistant, E.P. Bradley Sleep and Chronobiology Research Lab

Hi! I've recently driven from Los Angeles to Rhode Island to embark on my journey in the field of sleep sciences. My undergraduate years at UCLA were dedicated to earning a BA in Psychology with a minor in Digital Humanities. As a first-generation college student, I am especially passionate about supporting undergraduates through the challenges of academic pursuits and beyond. Outside of research, you can often find me at dance classes, scrolling LinkedIn, exploring National Parks, or catching up with friends and family over FaceTime.




Shreya Varrier
Shreya Varrier
Clinical Research Assistant, E.P. Bradley Sleep and Chronobiology Research Lab

Bio coming soon.




Grace Kupka
Grace Kupka
Clinical Research Assistant, COBRE Sleep and Circadian Methods Core

Hello! Having spent the first half of my childhood in historic Concord, Massachusetts, and the second in the rolling hills of Marin, California, I always tell people that I am bicoastal. In 2022, I graduated from Hamilton College with a B.A. in Psychology and moved to Lincoln Nebraska, where I spent the past two years delving into the world of affective science and stumbled upon an interest in actigraphy-measures of sleep. I am a health and fitness enthusiast, baker, and music lover, and I am looking forward to learning much more about developmental implications of sleep and circadian rhythms over the next two years.




Kiara Medeiros
Kiara Medeiros
Clinical Research Assistant

I grew up in Rhode Island and earned my B.S. in Psychology from the University of Rhode Island in 2024. As an undergraduate, I worked in URI’s Health Behavior Change Lab, studying health and health-risk behavior change using the Transtheoretical Model. Through my coursework and research experiences, I developed a strong interest in research methods and statistical approaches. After graduating, I continued working in a psychological testing center, further deepening my interest in methodology and measurement. This led me to the sleep lab, where I’ve since enjoyed learning about the many ways sleep can influence health and well-being! I hope to continue exploring how modifiable behaviors—like sleep—shape health outcomes and the robustness of the methods used to study them. Outside the lab, I enjoy running, spending time with loved ones, and unleashing my inner tourist while exploring nearby cities.