Article

Complex motor stereotypies (CMS) are patterned, repetitive, rhythmic, and
involuntary movements that persist over time. They are divided into two subgroups
dependent on the presence of other developmental problems: 'primary' (development
is otherwise typical) or 'secondary' (associated with autism, intellectual
disability, or sensory deficits). There are no currently published studies that
examine neuropsychological function in children with primary CMS. This
case-control study examines whether children with primary CMS manifest
neurobehavioral deficits. METHOD: Fifty-seven children with primary CMS (32
males, 25 females; mean age 6y 8mo, SD 2y 4mo, range 4-12y) with negative screens
for autism and 57 comparison participants (32 males, 25 females; mean age 6y 6mo,
SD 2y 1mo) completed neuropsychological assessments of IQ, reading ability,
attention, language, and motor and executive functions. Parents completed ratings
of their child's repetitive movement severity. RESULTS: The CMS group performed
significantly less well than comparison participants on motor skills and IQ tests
(both p<0.01), although IQ was consistently in the average range. One-third of
the CMS group showed signs of developmental motor coordination difficulties.
Parent report of stereotypy severity was significantly associated with parent
report of inattention and executive dysfunction. INTERPRETATION: Children with
primary CMS were found to have largely intact neuropsychological profiles.
Stereotypy severity appears to be associated with executive dysfunction. Although
motor difficulties were observed in children with CMS, these were not correlated
with parent report of symptom severity.
CI - (c) 2014 Mac Keith Press.

Langue : ANGLAIS