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Ariel A. Williamson, Ph.D.

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Ariel A. Williamson, Ph.D.

The Children’s Hospital of Philadelphia
Sleep Center

Philadelphia, PA USA

Ariel A. Williamson is a faculty member in the Sleep Center in the Division of Pulmonary Medicine, in Policy Lab, and in the Department of Child and Adolescent Psychiatry and Behavioral Sciences at Children’s Hospital of Philadelphia (CHOP). She is a licensed psychologist and provides clinical services in the CHOP Sleep Center and in primary care through the Healthy Minds, Healthy Kids program. She is additionally a member of the Board of Directors for the Beds for Kids program (, which provides beds, bedding, and healthy sleep education to children living without an individual bed and in impoverished homes in the greater Philadelphia area.

Dr. Williamson has a background in implementing and evaluating evidence-based interventions for children and their families struggling with disruptive behavior disorders, parenting issues, sleep problems, and other health concerns. Her current research focuses on identifying, preventing, and treating sleep and behavior problems in pediatric primary care, and in partnership with community organizations, including the Beds for Kids program. Dr. Williamson also conducts research on socio-ecological factors that are associated with increased risk for sleep and behavioral concerns, such as parental depression and socioeconomic disadvantage. Overall, her research aims to increase access to healthcare services and reduce pediatric health disparities.

Dr. Williamson earned her doctorate in clinical psychology from the University of Delaware. She completed her predoctoral internship in integrated behavioral health at CHOP, and a T32 postdoctoral fellowship in behavioral sleep medicine at the CHOP Sleep Center and the Center for Sleep and Circadian Neurobiology at the University of Pennsylvania Perelman School of Medicine. Dr. Williamson is the recipient of a loan repayment award from the National Institute of Child Health and Human Development and a career development award from the Sleep Research Society Foundation.


Mindell, J.A., & Williamson, A. A. (2018). Benefits of a bedtime routine in young children: Sleep, development, and beyond. Sleep Medicine Reviews, 40:93-108doi: 10.1016/j.smrv.10.007.

Puzino, K., Guite, J. W., Moore, M., Lewen, M. O., & Williamson, A. A. (2018). The relationship between parental responses to pain, pain catastrophizing, and adolescent sleep in adolescents with chronic pain.Children’s Health Care, 47:239-260doi: 10.1080/0739615.2017.1327258.

Fowles, T.R., Masse, J. J., McGoron, L., Beveridge, R. M.,Williamson, A. A., Smith, M.A., & Parrish, B. P. (2018). Intensive home-based vs. clinic-based parent-child interaction therapy (PCIT): Comparative effectiveness and attrition in the context of dissemination and implementation. Journal of Child and Family Studies, 27(4), 1115-1129. doi: 10.1007/s10826-017-0958-3.

Grassetti, S. N., Williamson, A. A., Herres, J., Kobak, R., Layne, C. M., Kaplow, J. B., & Pynoos, R. S. (2018). Evaluating referral, screening, and assessment procedures for middle school trauma/grief-focused treatment groups.School Psychology Quarterly, 33(1), 10-20. doi: 10.1037/spq0000231.

Aleman, X., Duryea, S., Guerra, N. G., McEwan, P., Stampini, M., & Williamson, A. A.* (2017). The effects of musical training on child development: a randomized trial of El Sistema in Venezuela. (*authorship is alphabetical).Prevention Science, 18(7), 865-878. doi: 10.1007/s11121-016-0727-3

Herres, J., Williamson, A. A., Kobak, R. R., Layne, C., Kaplow, J., Saltzman, W., & Pynoos, R. (2017). Internalizing and externalizing symptoms moderate treatment response to school-based trauma and grief component therapy for adolescents. School Mental Health, 9(2), 184-193doi: 10.1007/s12310-016-9201-1

Mindell, J.A., Leichman, E. S., Lee, C., Williamson, A. A., & Walters, R. M. (2017). Implementation of a nightly bedtime routine: How quickly do things improve? Infant Behavior and Development, 49, 220-227. doi: 10.1016/j.infbeh.2017.09.013.

Williamson, A. A., Raglin-Bignall, W. J., Swift, L. E., Hung, A. H., Robins, P. M., Power, T. J. & Mautone, J. A. (2017). Ethical and legal issues in integrated care settings:Case examples from pediatric primary care. Clinical Practice in Pediatric Psychology, 5, 196-208. doi: 10.1037/cpp0000157

Williamson, A. A., Rubens, S., Patrick, K., Moore, M., & Mindell, J. A. (2017). Differences in sleep patterns and problems by race in a clinical sample of Black and White preschoolers. Journal of Clinical Sleep Medicine, 13(11), 1281-1288. doi: 10.5664/jcsm/6798.

Ahn, Y., Williamson, A. A., Seo, H-J., Sadeh, A., & Mindell, J. A. (2016). Sleep patterns among Korean infants and toddlers: A global comparison. Journal of Korean Medical Science, 31, 261-269. doi: 10.3346/jkms.2016.31.2.261

Blechner, M. S., & Williamson, A. A. (2016). Behavioral consequences of obstructive sleep apnea syndrome (OSAS). In DelRosso, L., & Cielo, C. (Eds.) special issue on Pediatric OSAS, Current Problems in Pediatric and Adolescent Health Care, 46, 19-26. doi: 10.1016/j.cppeds.2015.10.007

Mindell, J. A., Sedmak, R., Boyle, J. T., Butler, R., & Williamson, A. A. (2016). Sleep Well! A pilot study of an education campaign to improve sleep of socioeconomically disadvantaged children. Journal of Clinical Sleep Medicine, 12, 1593-1599. doi: 10.5664/jcsm.6338

Rubens, S., Patrick, K. E., Williamson, A. A., Moore, M., & Mindell, J. A. (2016). Individual and socio-demographic factors related to presenting problem and diagnostic impressions at a pediatric sleep clinic. Sleep Medicine, 25, 67-72doi: 10.1016/j.sleep.2016.06.017

Williamson, A. A., Harrison, R. R., Reader, S., K, & Tynan, D.W. (2016). Parent-child groups for externalizing disorders: Outcomes, socio-demographic moderators, attendance, and attrition in a real-world setting. Evidence-Based Practice in Child and Adolescent Mental Health, 1(2-3), 126-143, doi: 10.1080/23794925.2016.1227945.

Williamson, A. A., Patrick, K. E., Rubens, S. L., Mindell, J. A., & Moore M. (2016). Pediatric sleep disorders in an outpatient sleep clinic: Clinical needs of children with neurodevelopmental conditions. Clinical Practice in Pediatric Psychology, 4(2),188-199.doi:10.1037/cpp0000135

Grassetti, S. N., Herres, J., Williamson, A. A., Yarger, H. A., Layne, C. M., & Kobak, R. R. (2015). Narrative focus predicts symptom change trajectories in group treatment for traumatized and bereaved adolescents. Journal of Clinical Child & Adolescent Psychology, 44, 933-941. doi: 10.1080/15374416.2014.913249

Lucas-Molina, B., Williamson, A. A., Pulido, R., & Pérez-Albéniz, A. (2015). Effects of teacher-student relationships on peer harassment: A multilevel study. Psychology in the Schools, 52, 298-315. doi:10.1002/pits.21822

Williamson, A. A., Knox, L., Guerra, N. G., & Williams, K. R. (2014). A pilot randomized trial of community-based parent training for immigrant Latina mothers. American Journal of Community Psychology, 53, 47-59doi: 10.1007/s10464-013-9612-4.

Williamson, A. A., Guerra, N. G., & Tynan, D. W. (2014). The role of health and mental health care providers in gun violence prevention. Clinical Practice in Pediatric Psychology, 2, 88-98. doi: 10.1037/cppp0000055

Lucas-Molina, B., Williamson, A. A., Pulido, R., & Calderón, S. (2014). Adaptation of the Participant Role Scale (PRS) in a Spanish youth sample: Measurement invariance across gender and relationship with sociometric status. Journal of Interpersonal Violence, 29, 2904-2930. doi: 10.1177/0886260514527822

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