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What autism epidemic?

Epidemic is a powerful word. It generates bold headlines, congressional hearings, research dollars and dramatic, high-stakes hunts for culprits. It's a word that has lately been attached to autism. How else to account for the fact that a disorder that before 1990 was reported to affect just 4.7 out of every 10,000 American children now strikes 60 per 10,000, according to many estimates-the equivalent of 1 in 166 kids? But what if there is no epidemic? What if the apparent explosion in autism numbers is simply the unforeseen result of shifting definitions, policy changes and increased awareness among parents, educators and doctors? That's what George Washington University anthropologist Roy Richard Grinker persuasively argues in a new book sure to generate controversy. In Unstrange Minds: Remapping the World of Autism, Grinker uses the lens of anthropology to show how shifting cultural conditions change the way medical scientists do their work and how we perceive mental health. In addition to rising awareness of autism, Grinker points to these factors: BROADER DEFINITIONS Each successive edition of the Diagnostic and Statistical Manual of Mental Disorders-the bible of mental health-has revised the criteria for identifying autism in ways that tend to include more people. Two conditions on the milder end of the autistic spectrum-Asperger's syndrome and the awkwardly named PDD-NOS (pervasive developmental disorder, not otherwise specified)-were added to the DSM in 1994 and 1987, respectively. Grinker and others say 50% to 75% of the increase in diagnoses is coming in these milder categories. SCHOOL POLICY U.S. schools are required to report data on kids who receive special-education services, but autism wasn't added as a category until the 1991-92 school year. No wonder the numbers exploded-from 22,445 receiving services for autism in 1995 to 140,254 in 2004. Grinker points out that "traumatic brain injury" also became one of the 13 reportable categories in 1992, and it had a similar spike. MORE HELP, LESS STIGMA As services have become more available for kids with autism, more parents are seeking a diagnosis they would have shunned 30 years ago, when psychiatrists still blamed autism on chilly "refrigerator" mothers. Doctors are also more willing to apply the diagnosis to help a patient. "I'll call a kid a zebra if it will get him the educational services I think he needs," National Institute of Mental Health psychiatrist Judith Rapoport told Grinker.