Findings from a prospective longitudinal study of 46 boys with fragile X syndrome between the ages of 24 and 72 months were reported. Hierarchical linear modeling was used to construct and evaluate overall developmental trajectories and scores in five domains: Cognition, Communication, Adaptive, Motor, and Personal-Social. The children varied widely, with significant differences across individuals in both mean rate and level of performance. Overall development was significantly delayed, with a slope of .48--approximately half the rate expected for typically developing children. No differences were found in rates of growth across the five domains. Significant differences were found, however, in mean levels of performance. At every age tested, Motor and Adaptive scores were higher than Communication and Cognitive
Early developmental trajectories of males with fragile X syndrome
Bailey, D., Hatton, DD., & Skinner, M. (1998). Early developmental trajectories of males with fragile X syndrome. American Journal on Mental Retardation, 103(1), 29-39. http://www.aaiddjournals.org/doi/abs/10.1352/0895-8017(1998)103%3C0029:EDTOMW%3E2.0.CO;2
Abstract
Publications Info
To contact an RTI author, request a report, or for additional information about publications by our experts, send us your request.
Meet the Experts
View All ExpertsRecent Publications
Article
The daily association between affect and alcohol use: A meta-analysis of individual participant data
Article
Protection of forest ecosystems in the eastern United States from elevated atmospheric deposition of sulfur and nitrogen
Article
The use of patient experience feedback in rehabilitation quality improvement and codesign activities
Article