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Study provides new insights into the implications of autism onset patterns
Date:4/20/2010

ed educational supports. These findings were markedly worse for the children whose parents reported the regression as severe.

This study was also one of the first to examine the implications of developmental plateau, which tended to occur around the child's second birthday. When compared to children with No Loss and No Plateau, these children were more likely to need educational supports and receive an autistic disorder diagnosis, which is typically more severe than other diagnoses on the autism spectrum (i.e., Asperger's syndrome or Pervasive Developmental Disorder Not Otherwise Specified). Children with No Loss and No Plateau were at the least risk for poor outcomes.

"Children who plateau or regress have a later manifestation of autism, but when it manifests it devastates their development," said Dr. Paul Law, corresponding study author and Director of the Interactive Autism Network at Kennedy Krieger. "Children with developmental plateau are an especially under-researched group, and these findings have important implications for those designing and prioritizing clinical evaluations."

Previous studies have reached a variety of different conclusions concerning outcomes for children with regression. Some research has found these children fared worse in the long-term, while other studies found no differences in outcome between these children and those without regression. In examining these discrepancies, the current study suggests researchers who require children to have near typical development prior to regression may be missing the most severely impaired children in their findings. In fact, 35 percent of parents in this study had concerns about their child's general development before they noticed the more obvious signs of skill loss.

"Parents have good instincts when it comes to their children," said Dr. Rebecca Landa, co-author and director of Kennedy Krieger's Center for Autism and Related Disorders. "If they're concerned,
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Contact: Megan Lustig
mlustig@spectrumscience.com
202-955-6222 x2586
Kennedy Krieger Institute
Source:Eurekalert

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