Trajectories and profiles of adaptive behavior in males with fragile X syndrome: multicenter studies - PubMed (original) (raw)

. 1996 Jun;26(3):287-301.

doi: 10.1007/BF02172475.

Affiliations

• PMID: 8792261
• DOI: 10.1007/BF02172475

Trajectories and profiles of adaptive behavior in males with fragile X syndrome: multicenter studies

E Dykens et al. J Autism Dev Disord. 1996 Jun.

Abstract

We conducted two multicenter studies on adaptive trajectories and profiles in males with fragile X syndrome. Study 1 longitudinally assessed 29 males ages 1-20 years using age-equivalent scores from the Vineland Adaptive Behavior Scales. Fragile X boys ages 1-10 years showed significant gains in adaptive skills from first to second testing; males ages 11-20 years were stable in their adaptive development. Study 2 cross-sectionally examined 132 males ages 1-20 years. Significant age-related gains were found in boys ages 1-10, particularly in preschool children. Subjects ages 11-20 showed increased variability and nonsignificant relations between age and adaptive skills. Preliminary findings from 26 young adults with fragile X syndrome ages 21-40 years showed stable age-equivalent adaptive scores during these years. Relative strengths in daily living skills and weaknesses in communication were only evident among older subjects. Significant relations were found between adaptive behavior standard scores and IQ; these two scores also showed age-related declines that likely parallel one another. Findings are related to adaptive features in other genetic syndromes, and to directions for future adaptive behavior research.

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