ERIC Number: EJ1065611
Record Type: Journal
Publication Date: 2015-Jul
Abstractor: As Provided
Developmental Changes in Cognitive and Behavioural Functioning of Adolescents with Fragile-X Syndrome
Frolli, A.; Piscopo, S.; Conson, M.
Journal of Intellectual Disability Research, v59 n7 p613-621 Jul 2015
Background: Individuals with fragile-X syndrome exhibit developmental delay, hyperexcitation and social anxiety; they also show lack of attention and hyperactivity. Few studies have investigated whether levels of functioning change with increasing age. Here, we explored developmental changes across adolescence in the cognitive and behavioural profile of individuals with fragile-X syndrome. To this scope, we assessed intellectual functioning, adaptive behaviour, autistic symptomatology, behavioural problems (e.g. hyperactivity/lack of attention) and strengths (prosocial behaviours). Method: Thirty-six participants underwent standardised outcome measures (i.e. the Wechsler Intelligence Scales-Revised, the Childhood Autism Rating Scale, the Vineland Adaptive Behavior Scales, and the Strengths and Difficulty Questionnaire) in three time points (Time 1: 9-11; Time 2: 11-13, and Time 3: 13-15 years). Results Verbal IQ improved across time, whereas Nonverbal IQ declined and Full Scale IQ was quite unchanged. Autism ratings decreased; communication and social aspects of adaptive behaviour also enhanced. Finally, elevated levels of hyperactivity/lack of attention at Time 1 significantly improved across the three time points, whereas emotional symptoms, behavioural difficulties, problems with peers and prosocial behaviours remained stable over time. Conclusion: These findings revealed specific developmental changes in cognitive and behavioural functioning of individuals with fragile-X syndrome, likely related to a progressive maturation of brain systems devoted to attentional control.
Descriptors: Adolescents, Genetic Disorders, Developmental Delays, Anxiety, Attention Deficit Disorders, Hyperactivity, Age Differences, Cognitive Development, Child Behavior, Cognitive Ability, Autism, Symptoms (Individual Disorders), Behavior Problems, Prosocial Behavior, Antisocial Behavior, Questionnaires, Verbal Ability, Intelligence Quotient, Emotional Problems, Peer Relationship, Brain, Neurological Organization, Child Development
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Childhood Autism Rating Scale; Strengths and Difficulties Questionnaire; Vineland Adaptive Behavior Scales; Wechsler Intelligence Scale for Children
Grant or Contract Numbers: N/A