There is a widespread perception that autism is now alarmingly more common than it was just one or two decades ago. As an introduction to this Session this presentation will review available data on secular trends in the prevalence of autism spectrum disorders. Possible interpretations of these data will be discussed in light of information on changing diagnostic criteria and practices. Questions regarding information needs and disease etiology provoked by consideration of these data will be posed. Speakers for subsequent Session presentations, which will address these questions, will be introduced.
Learning Objectives: N/A
Presenting author's disclosure statement:
Organization/institution whose products or services will be discussed: None
I do not have any significant financial interest/arrangement or affiliation with any organization/institution whose products or services are being discussed in this session.