William R. Stixrud, Ph.D.
A clinical neuropsychologist who has been in private practice since 1985. He is also a member of the Adjunct Faculty of the Children’s National Medical Center, and he holds a faculty appointment as Assistant Clinical Professor of Psychiatry at the George Washington School of Medicine. Read full bio.
Dr. Robb Mapou
A board-certified clinical neuropsychologist who has been with The Stixrud Group since 1993. He evaluates adolescents, adults, and seniors for learning disabilities, ADHD, and range of neurological conditions, including concussion, dementia, stroke, severe traumatic brain injury, and epilepsy. However, he is nationally-recognized for his work on assessment of learning disabilities and ADHD in adults. Read full bio.
Adele C. Green, Ph.D.
A licensed psychologist who has been with The Stixrud Group, LLC since 1994. She specializes in assessing language, attention, and executive functioning disorders and learning disabilities in children, adolescents and young adults and is equally experienced in evaluating gifted individuals who are underachievers and/or highly anxious and distressed. Read full bio.
Dr. Lisa A. Martin
A licensed clinical psychologist who has been with the practice since 1996. Dr. Martin specializes in the neuropsychological evaluation of children with learning disabilities, attention deficit hyperactivity disorder, and other developmental and emotional concerns. Read full bio.
Dr. Wendy A. Law
A licensed, clinical psychologist who specializes in the assessment of learning disabilities, attention-deficit/hyperactivity disorder, and neurological disorders in adults. She is particularly interested in evaluating how emotional and neurological disorders together affect cognitive functioning. Read full bio.
Dr. Patricia H. Papero
A licensed clinical psychologist with extensive experience in pediatric neuropsychology. Her areas of special interest include children, adolescents and young adults with neurological problems, such as epilepsy and brain injuries, and children with special developmental needs, including specific learning disorders and more pervasive developmental disorders. Read full bio.
Dr. Susan W. Hammond
A licensed clinical psychologist who has extensive experience working with children and adolescents with learning disabilities, attention deficit hyperactivity disorder, and emotional and behavioral difficulties. Dr. Hammond graduated with honors from Wellesley College and received her doctoral degree in clinical psychology from the University of Delaware. Read full bio.
Dr. Susan S. Gerson
A licensed psychologist who specializes in the evaluation and treatment of children and adolescents with learning disabilities, attention deficit hyperactivity disorder, and other educational concerns. Read full bio.
Dr. Erika Wasserman
A licensed psychologist who specializes in assessment of learning disabilities and attention deficit hyperactivity disorder. She also has extensive training in pediatric and behavioral psychology. Dr. Wasserman received her doctoral degree in Clinical Child Psychology from the University of Miami in Coral Gables, Florida. Read full bio.
Dr. Ellen K. Goldman
A licensed psychologist with extensive experience in psychotherapy and psychological assessment. She has worked in a variety of school and clinical settings. Dr. Goldman is a graduate of Cornell University and received her Ph.D. from the State University of New York at Buffalo. Read full bio.
Dr. Adam J. Sowa
A licensed clinical psychologist who specializes in the evaluation and treatment of children and adolescents with learning disabilities, attention deficit hyperactivity disorder, and other developmental issues. Dr. Sowa received his Ph.D. from Vanderbilt University… Read full bio.
Dr. Kimberly L. Glass
A licensed clinical psychologist and pediatric neuropsychologist. Her areas of specialized training and interest include neuropsychological assessment of children who have been adopted (domestic and international) and assessment of specific disorders including fetal alcohol spectrum disorder (FASD)… Read full bio.
Dr. David Black
A licensed clinical psychologist and pediatric neuropsychologist. He is skilled in the assessment of a wide range of childhood neurological, psychiatric, developmental… Read full bio.
Dr. Katia Fredriksen
A licensed clinical psychologist and developmental neuropsychologist who specializes in the evaluation of children, adolescents, and college students with autism spectrum disorders, learning disabilities, ADHD/ADD… Read full bio.
Dr. Donna Henderson
Has been a licensed psychologist since 1992, specializing in helping people with all kinds of neurologic disorders, such as ADHD, learning disabilities, autism spectrum disorders, traumatic brain injury, stroke, and multiple sclerosis. Dr. Henderson earned her doctoral degree from Wright State University in Ohio and completed her internship at Hartford Hospital in Connecticut. Read full bio.
Administrative Staff
Starr Stixrud, M.Ed., Administrative Director, Client Care Manager
Starr joined the practice in September, 1990 after a fifteen year career in early childhood education. During her career as an educator, she worked as a classroom teacher, provided extensive staff training and development, and conducted weekly parent education seminars. She earned a B.A. from Southern Illinois University, a M.Ed. from the University of Washington in Early Childhood Special Education, and a specialist certification in Early Childhood Education from the Institute of Childhood Development at the University of Minnesota. She also participated in a two-year graduate program in the Applied Healing Arts through the Tai Sophia Institute. She has been married for over 30 years to Dr. William Stixrud, and they have two grown children. In her spare time, among her diverse interests, she maintains a daily meditation and yoga practice, cooks, knits, and is an avid reader.
Elaine D. Book, M.Ed., Client Care Manager
Elaine received her B.A. from the University of Maryland in social work, a M.Ed. from Loyola University in special education, and a second M.Ed. in special education from Kansas State University. Her background includes five years as a special education teacher in Topeka, Kansas, and five years as an educational diagnostician in the Topeka school system, followed by seven years as an educational diagnostician with Psychiatric Institute, Bethesda, MD. She has been with our practice since then, and serves a dual function as an intake specialist and a clinical assistant.
Patty Eyster
Patty Eyster, M.Ed., began her career in management consulting but switched to education after she had her own family. She has been an educator for seven years, with particular interest in children, teenagers, and young adults on the autism spectrum. She homeschooled for several years, and she created curriculum for a small independent elementary school for children on the autism spectrum. Patty has also developed and managed programs to help teenagers on the spectrum learn about and participate in the workforce. She stays current on available and new treatments for autism; and she has been trained in social thinking curriculum, as well as floor-time therapy.Patty received a M.Ed. in Special Education from American University and completed her teacher internship at the Lab School in both elementary and middle schools.
Altah O. Glasgow, Director of Tutoring Services
Altah has been with The Stixrud Group for seven years. She began as a Stixrud tutor and still maintains a small, part-time practice helping children with reading, math, writing, and executive function issues. In 2005, Altah accepted a part-time position as Education and Outreach Program Coordinator at the Stixrud office. Altah has been full time Director of Tutoring Services for the past two years and enjoys helping clients find the best tutor.
Johanna M. Smith, M.A.
Johanna received her B.S. in psychology from James Madison University in 2003 and her M.A. in psychology from American University in 2005. While at AU, she worked as a member of the residential staff at the Regional Institute for Children & Adolescents (RICA) in Rockville, MD and volunteered as a Research Coordinator at the Donald Delaney Eating Disorders Clinic at the Children’s National Medical Center in Washington, DC. Upon graduating, she worked for two years as a Research Associate at the American Institutes for Research in Washington, DC where she received specialized training in the Facial Action Coding System (FACS) and developed training materials and assessments for the government, before joining the Stixrud practice as a Psychology Associate. Johanna has completed the William R. Stixrud, Ph.D. Tutoring Services “Strategies That Work” Tutor Training Program and is a certified Read Naturally tutor. In addition to her testing and clinical responsibilities here, Johanna maintains her own tutoring practice, serves as a facilitator among the psychology associates, and is responsible for preparing insurance pre-certifications.
Deborah Mans
Deborah Mans, M.A., became a special educator in 1994, after a career in urban planning. For 12 years, she taught science, reading, and English at the Lab School of Washington, an independent school for students with learning disabilities, where she was also a private tutor. During her career in special education, she was a research
assistant for a Peer Assisted Learning project (PALS), and supervisor of student teachers at the masters level in special education. She has also served on panels concerning postsecondary transition of high school students with learning disabilities. Deborah earned an M.A. in Special Education: Learning Disabilities, at American University, in Washington, DC, and completed doctoral coursework in Special Education: Postsecondary Transition at the University of Maryland, College Park. She also earned a B.A at Harvard University, and an M.C.P. at the Massachusetts Institute of Technology (MIT).