Subsequent studies debunked his findings, and British health authorities worked hard to make sure that more than 90 percent of children 12 to 15 months old were vaccinated each year.

"Our study debunks the prevailing myths about sexuality in older years," Dr. James Firman, president of the aging advocacy organization, said at a news conference.

More recent studies have also debunked the claims that so-called "Aryans" and "Dravidians" have a "racial divide".

Many studies have debunked the idea that it causes hyperactivity, for example.

Many recent studies have debunked that figure, including a study last year finding that only 1 percent of the male population was homosexual.

"This study further debunks myths that have been promoted for political gain," the NBC statement said, "and focuses on the source of violent programming content, which is non-network sources."

The study debunked the widely held view that children learn to read "automatically."

However, the study does not necessarily debunk Chomsky's observation because it has not yet been proven that songbirds have the semantic ability to generalize from patterns.

As for hyperactivity, two new studies debunked the belief that sugar or aspartame can drive normal children up the wall and hyperactive children across the ceiling.