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Intelligence and the fra(X) syndrome: a review
L M Curfs1, A M Wiegers, J P Fryns
1Observation Centre de Hondsberg, Oisterwijk, The Netherlands.
Genetic Counseling (Geneva, Switzerland)
|January 1, 1991
Summary
Intelligence in fragile X syndrome (FXS) males may decline with age. However, current data requires cautious interpretation due to methodological limitations in FXS screening.
Area of Science:
- Neurodevelopmental disorders
- Genetics
- Cognitive science
Background:
- Fragile X syndrome (FXS) is a genetic disorder associated with intellectual disability.
- Understanding cognitive trajectories in FXS is crucial for intervention strategies.
Purpose of the Study:
- To review existing literature on intelligence in males with FXS.
- To examine the relationship between age and intellectual functioning in this population.
Main Methods:
- Literature review of studies reporting intelligence data in males with FXS.
- Analysis of age-related trends in intellectual performance.
Main Results:
- Available data suggest a potential decline in intellectual functioning with increasing age in males with FXS.
- Significant heterogeneity exists in reported intellectual outcomes.
Conclusions:
- The observed decline in intelligence in FXS males warrants further investigation.
- Methodological challenges in FXS screening and ascertainment necessitate cautious interpretation of current findings.