New York Times
December 2, 2003

Research on Ecstasy Is Clouded by Errors
By Donald G. McNeil Jr.

In September, the journal Science issued a startling retraction.

A primate study it published in 2002, with heavy publicity, warned that the amount of the drug Ecstasy that a typical user consumes in a single night might cause permanent brain damage.

It turned out that the $1.3 million study, led by Dr. George A. Ricaurte of Johns Hopkins University, had not used Ecstasy at all. His 10 squirrel monkeys and baboons had instead been injected with overdoses of methamphetamine, and two of them had died. The labels on two vials he bought in 2000, he said, were somehow switched.