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Autism
Part 1 of Paper
....istic disorder, almost always
develops within the first 3 years of a child's life. Children and adolescents
with cannot interact normally with other people. thus affects
many aspects of their development.
Children with and adolescents with autism typically: -have a difficult
time communicating with others -exhibit .... Part 2 of Paper
..... Three times as many boys as girls have autism.
Researchers are still unsure about what causes autism. Several studies
suggest that autistic disorder might be caused by a combination of biological
factors, including exposure to a virus before birth, a problem with the immune
system, or genetics.
Scientists also have identified chemicals in the brain and the immune
system that may be involved in autistic disorder. As a normal brain develops,
the level of serotonin, a chemical found in the b.... |
| Number of words: 311 - Approximate pages: 2 |
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