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Psychometric study of the Aberrant Behavior Checklist in Fragile X Syndrome and implications for targeted treatment.

ABSTRACT: Animal studies elucidating the neurobiology of fragile X syndrome (FXS) have led to multiple controlled trials in humans, with the Aberrant Behavior Checklist-Community (ABC-C) commonly adopted as a primary outcome measure. A multi-site collaboration examined the psychometric properties of the ABC-C in 630 individuals (ages 3-25) with FXS using exploratory and confirmatory factor analysis. Results support a six-factor structure, with one factor unchanged (Inappropriate Speech), four modified (Irritability, Hyperactivity, Lethargy/Withdrawal, and Stereotypy), and a new Social Avoidance factor. A comparison with ABC-C data from individuals with general intellectual disability and a list of commonly endorsed items are also reported. Reformulated ABC-C scores based on this FXS-specific factor structure may provide added outcome measure specificity and sensitivity in FXS clinical trials.

SUBMITTER: Sansone SM 

PROVIDER: S-EPMC3290710 | biostudies-literature | 2012 Jul

REPOSITORIES: biostudies-literature

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Psychometric study of the Aberrant Behavior Checklist in Fragile X Syndrome and implications for targeted treatment.

Sansone Stephanie M SM   Widaman Keith F KF   Hall Scott S SS   Reiss Allan L AL   Lightbody Amy A   Kaufmann Walter E WE   Berry-Kravis Elizabeth E   Lachiewicz Ave A   Brown Elaine C EC   Hessl David D  

Journal of autism and developmental disorders 20120701 7

Animal studies elucidating the neurobiology of fragile X syndrome (FXS) have led to multiple controlled trials in humans, with the Aberrant Behavior Checklist-Community (ABC-C) commonly adopted as a primary outcome measure. A multi-site collaboration examined the psychometric properties of the ABC-C in 630 individuals (ages 3-25) with FXS using exploratory and confirmatory factor analysis. Results support a six-factor structure, with one factor unchanged (Inappropriate Speech), four modified (Ir  ...[more]

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