Identifying Infants and Toddlers with Fragile X Syndrome: PDF OnlyIdentifying Infants and Toddlers with Fragile X Syndrome Issues and RecommendationsBailey, Donald B. Jr PhD1; Roberts, Jane E. PhD2; Mirrett, Penny PhD3; Hatton, Deborah D. PhD4Author Information 1Director and Senior Scientist 2Investigator 3Investigator 4Investigator Frank Porter Grabam Child Development Center University of North Carolina at Chapel Hill Chapel Hill, North Carolina This research was funded in part by grant H324C990042, Office of Special Education Programs, US Department of Education. Infants & Young Children: July 2001 - Volume 14 - Issue 1 - p 24-33 Free Abstract Fragile X syndrome (FXS) is an inherited genetic disorder resulting in developmental delays and challenging behaviors. Reliable, accurate tests are available for carrier, prenatal, or newborn screening. Since genetic screening is not routinely offered, FXS is typically identified through behavioral observation. The variability and subtlety in the expression of FXS make early identification challenging. The article reviews the research and recommends a set of characteristics to enhance the identification process. While a checklist alone is unlikely to improve identification during the infant-toddler years, it may alert professionals to more obvious cases, help confirm parental and professional suspicions over several visits, and yield more fine-grained observations and precise comparisons. ©2001Aspen Publishers, Inc.