Mr. Parker drew a breath. “Look, I’d take a suggestion from my grandmother if I thought it would improve a film I was writing,” he said. “But this feels like the studio would listen to my grandmother before me, and that is terrifying.”

But a lot of producers, studio executives and major film financiers disagree. Already they have quietly hired Mr. Bruzzese’s company to analyze about 100 scripts, including an early treatment for “Oz the Great and Powerful,” which has taken in $484.8 million worldwide.

Mr. Bruzzese (pronounced brew-ZEZ-ee), who is one of a very few if not the only entrepreneur to use this form of script analysis, is plotting to take it to Broadway and television now that he has traction in movies.

“It takes a lot of the risk out of what I do,” said Scott Steindorff, a producer who used Mr. Bruzzese to evaluate the script for “The Lincoln Lawyer,” a hit 2011 crime drama. “Everyone is going to be doing this soon.” Mr. Steindorff added, “The only people who are resistant are the writers: ‘I’m making art, I can’t possibly do this.’ ”

Audience research has been known to save a movie, but it has also famously missed the mark. Opinion surveys — “idiot cards,” as some unimpressed directors call them — indicated that “Fight Club” would be the flop of the century. It took in more than $100 million worldwide.

But, as the stakes of making movies become ever higher, Hollywood leans ever harder on research to minimize guesswork. Moreover, studios have trimmed spending on internal script development. Mr. Bruzzese is also pitching script analysis to studios as a duck-and-cover technique — for “when the inevitable argument of ‘I am not going to take the blame if this movie doesn’t work’ comes up,” his Web site says.

Mr. Bruzzese taught statistics at the State University of New York at Stony Brook on Long Island before moving into movie research about a decade ago, motivated by a desire for more money and a childhood love of movies.