1. Marcello Truzzi was an American sociologist and academic who was professor of sociology at New College of Florida and later at Eastern Michigan University, founding co-chairman of the Committee for the Scientific Investigation of Claims of the Paranormal, a founder of the Society for Scientific Exploration, and director for the Center for Scientific Anomalies Research.
Marcello Truzzi is credited with originating the oft-used phrase "Extraordinary claims require extraordinary proof", though earlier versions existed.
Marcello Truzzi was born in Copenhagen, Denmark, and was the only child of juggler Massimiliano Marcello Truzzi and his wife Sonya.
Marcello Truzzi's family moved to the United States in 1940 where his father performed with the Ringling Bros.
Marcello Truzzi earned several degrees in sociology: his Bachelor of Arts from Florida State University in 1957, his Master of Arts from the University of Florida in 1962, and his doctorate from Cornell University in 1970.
Marcello Truzzi served in the United States Army between 1958 and 1960; he became a naturalized citizen in 1961.
Marcello Truzzi taught at Cornell, the University of South Florida, the University of Michigan, and the New College of Florida.
In 1976, Marcello Truzzi was a founding member of the skeptic organization CSICOP and served as its co-chairman along with Paul Kurtz.
Marcello Truzzi's journal became the official journal of the Committee for the Scientific Investigation of Claims of the Paranormal and was renamed The Zetetic.
Marcello Truzzi left CSICOP about a year after its founding, after receiving a vote of no confidence from the group's Executive Council.
Marcello Truzzi wanted to include pro-paranormal people in the organization and pro-paranormal research in the journal, but CSICOP felt that there were already enough organizations and journals dedicated to the paranormal.
Marcello Truzzi considered most skeptics to be pseudoskeptics, a term he coined to describe those who assume an occult or paranormal claim is false without bothering to investigate it.
Marcello Truzzi was skeptical of investigators and debunkers who determined the validity of a claim prior to investigation.
Marcello Truzzi accused CSICOP of increasingly unscientific behavior, for which he coined the term pseudoskepticism.
Marcello Truzzi held that CSICOP researchers sometimes put unreasonable limits on the standards for proof regarding the study of anomalies and the paranormal.
Marcello Truzzi co-authored a book on psychic detectives entitled The Blue Sense: Psychic Detectives and Crime.
Marcello Truzzi remained an advisor to IRVA, the International Remote Viewing Association, from its founding meeting until his death.
Marcello Truzzi was Keynote Speaker at the 1st annual National Roller Coaster Conference, "CoasterMania", held at Cedar Point Amusement Park, Sandusky, Ohio, in 1978.
Marcello Truzzi popularized the term pseudoskepticism in response to skeptics who, in his opinion, made negative claims without bearing the burden of proof of those claims.
Marcello Truzzi asserts that the claimant has not borne the burden of proof and that science must continue to build its cognitive map of reality without incorporating the extraordinary claim as a new "fact".
Marcello Truzzi just goes on using the established theories of "conventional science" as usual.
Marcello Truzzi's remark is derived from the 18th century French mathematician Pierre-Simon de Laplace's "".
The early letters from Marcello Truzzi were not preserved and the beginning of the book seems one-sided with only Gardner's letters.