Postdoctoral Fellows

Department of Psychology




Ashley Fournier-Goodnight, PhD

I am a postdoctoral fellow in pediatric neuropsychology under the supervision of Heather Conklin, Ph.D. My clinical work and research focus predominantly upon patients who have been diagnosed with brain tumors, although I also see patients with other diagnoses impacting central nervous system functioning. I earned my doctor of philosophy at Texas Woman’s University and completed a pre-doctoral residency at Fort Worth Independent School District/Cook Children’s Medical Center where I worked primarily with children with traumatic/acquired brain injuries, epilepsy, and learning disabilities.


Jennifer Allen, PhD

Originally from Kansas, I received my B.A. from the University of Tulsa in Psychology and Spanish. From there I earned my doctorate at Saint Louis University and completed my internship training at the Center for Behavioral Medicine in Kansas City, MO. I am currently a clinical psychology fellow and am working with Jennifer Ehrentraut, Ph.D. with patients who experience acute and chronic pain. In regard to research, I am interested in the relationship between pain and sleep and how that impacts overall quality of life. In my free time I love reading, playing with my dog, running, and exploring Memphis.


Danielle Graef, PhD

I am a psychology fellow working with Dr. Valerie Crabtree, focusing on sleep disturbances in children with cancer. I received my B.A. in psychology at the University of Missouri and earned my Ph.D. in Clinical and Health Psychology at the University of Florida, with an emphasis on pediatric health psychology. I completed my pre-doctoral residency at Nemours/A.I. duPont Hospital for Children. In addition to sleep, my clinical and research interests include improving health, adjustment, and quality of life in children with cancer, hematological disorders, and infectious diseases. I look forward to my work at St. Jude given the value of cross-discipline collaboration, commitment to quality patient care, and integration of clinical care and translational research.

John Hamilton
John Hamilton, PhD

I am originally from Baton Rouge, Louisiana. I graduated from Wofford College with a B.S. in Psychology in 2002. I completed my graduate studies at Palo Alto University and earned my doctorate in 2012. I completed my pre-doctoral residency at the Southeastern Louisiana Consortium - Louisiana State University and Eastern Louisiana Mental Health System. I am currently a Pediatric Neuropsychology Fellow working under Jane Schreiber, Ph.D. I am planning to aid Dr. Schreiber in her research efforts that focus on the neurobehavioral functioning in children with Sickle Cell Disease and cancer. In addition, I plan to continue to pursue my research interests in developmental emotion processing systems within these populations.

Yuko Okado
Yuko Okado, PhD

I am a psychology fellow working with Sean Phipps, PhD. I earned my Ph.D. in clinical psychology from the Pennsylvania State University, and I research how stressful events, parent-child and peer relationships, and child characteristics interact to influence the child's long-term well-being. My clinical interests include the management of mood concerns, anxiety, and pain, and family coping. In my pre-psychology years, I worked in the nonprofit, education, and IT industries. My other passions include running, music, and traveling.

Kimberly Wesley
Kimberly Wesley, PsyD

As a postdoctoral fellow at St. Jude, I am working with Jerlym Porter, Ph.D. on research projects focusing on determining readiness of young adults transitioning to adult care from pediatric care and barriers to seeking intervention for treatment of enuresis in patients with Sickle Cell Disease. I received my B.A. in Psychology from the University of Virginia in 2008, my M.A. in Clinical Psychology from La Salle University in 2010, and my Psy.D. in Clinical Health Psychology from La Salle University in 2013. I completed my predoctoral psychology internship at Ohio Guidestone in Cleveland, OH, where I specialized in psychological assessment and early childhood intervention.