More than a half century has passed since autism first got its name, yet controversies over its cause and treatment remain a mystery.
Since 1943, when Dr. Leo Kanner of Johns Hopkins wrote his pivotal paper that established autism as a childhood psychiatric disorder, four autism legends have died, and autism has stepped out of the shadows and into the public eye as its prevalence now strikes one child out of every 150 in the United States.
Go back to 1911 to see who first introduced the term autism and how experts disproved theories over its cause in this interactive timeline on Autism's Origins.
Move the black slider bar at the bottom to move through the years.
Whenever possible, links to primary source information or citations are given. Sometimes, exact dates were not available. In those instances, 01/01/year was given.