Skip to main content
Sign In

Developmental FX

The Developmental & Fragile X Resource Centre


Developmental FX is a non-profit organization specializing in the provision of clinical services to families with fragile X syndrome or other neurodevelopmental disorders. The staff at Developmental FX provides multidisciplinary assessments, intervention, and consultation to families affected by such disorders. Services provided include occupational and speech/language therapy as well as neuropsychological evaluation and treatment. In addition to working one-on-one with families affected by neurodevelopmental disorders, the staff at Developmental FX strives to enhance knowledge and understanding of these disorders in the community through lectures, mentoring, and consultation.

Tracy Murnan Stackhouse, MA, OTR, and Sarah Scharfenaker, MA, CCC-SLP, are the co-founders of Developmental FX. Ms. Stackhouse is a leading pediatric occupational therapist (OT) involved in clinical treatment, research, mentoring, and training regarding OT intervention for persons with neurodevelopmental disorders, especially fragile X syndrome and autism. Ms. Scharfenaker has provided speech pathology services for individuals with fragile X syndrome or other neurodevelopmental disorders for more than 15 years.

The staff of Developmental FX also includes individuals trained in the psychological assessment and treatment of neurodevelopmental disorders. Kathy Culhane-Shelburne, PhD, is a clinical neuropsychologist specializing in the assessment of individuals with neurodevelopmental disorders, focusing particularly on autism spectrum disorders. Jennifer Epstein, who has a PsyD in clinical psychology, specializes in assessment, consultation, and behavioral intervention with families who are affected by developmental disabilities.

Additional information about the services provided by Developmental FX is available at