Declining IQs of young males with the fragile X syndrome.
Retrospective, longitudinal data were obtained on 21 boys with the fragile X syndrome to assess whether their IQs declined during childhood. For the group as a whole, IQs dropped significantly; 13 boys showed a significant decline at retest. Our results are consistent with reports that young boys with the fragile X syndrome may be only mildly impaired, whereas adults with this syndrome are usually moderately or severely retarded. Parents of young boys with the fragile X syndrome should be cautioned that the IQ of their child may decline.
University of North Carolina at Chapel Hill.
A M
AM
Lachiewicz
C M
CM
Gullion
G A
GA
Spiridigliozzi
A S
AS
Aylsworth
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005600:Fragile X Syndrome / Q000523:psychology*; D006801:Humans; D007360:Intelligence; D007361:Intelligence Tests; D008137:Longitudinal Studies; D008297:Male; D012189:Retrospective Studies; D012729:Sex Chromosome Aberrations / Q000523:psychology*