"I think audiences seem to want this truth, or pseudo-truth, as readers want memoirs. Maybe fiction as such is no longer something we can believe," she told AFP.
The Academy of Motion Picture Arts and Sciences unveiled its nominees for the March 2 Oscars show in a pre-dawn ceremony Thursday at its Beverly Hills headquarters.
The nine best picture nominees are "American Hustle," "Captain Phillips," "Dallas Buyers Club," "Philomena," "12 Years A Slave," "The Wolf of Wall Street," "Gravity," "Her" and "Nebraska."
All but the last three are based on real events. That's a significantly higher proportion than in any recent list of Academy Award best pictures.
What's more, it seems to follow a trend for winners: last year's "Argo" was about an infamous CIA operation in Iran, two years before that was "The King's Speech," about Britain's stuttering King George VI.
And "The Hurt Locker," 2009's winner, was about bomb disposal teams in war-torn Iraq.
The obvious question is, why?
Industry watchers offer various reasons: a real-life tie-in helps to market a movie; cinema-goers are more easily drawn to a story they already know about; and telling a story is easier if you know what happened.
"For some reason we as a society are obsessed with reality," said Tim Gray, awards editor of industry journal Variety, noting also the explosion of reality television shows in recent years.`
Closer to home, "we all videotape ourselves, we post it. We post photos, We're starring in our own life story, so it only seems logical that when you go to a movie you should see something real," he told AFP.
Citing current Oscar best picture nominees "Philomena" and "Dallas Buyers Club," he said: "The fact that these stories are based on reality adds an element of urgency to them.
"Dallas Buyers Club" tells the story of homophobic hustler Ron Woodroof, who contracted the HIV virus and became an activist for ground-breaking AIDS drugs in the 1980s.
"Here's a homophobe who catches AIDS and learns compassion. If that was fictional you'd think 'Oh this is manipulative, this is too far-fetched,'" Gray said.
"But you say, 'No this is based on truth and this is fact' and it lends urgency."
"American Hustle," which shares top Oscar nods with space drama "Gravity," is based on a 1970s FBI sting operation known as ABSCAM, while "12 Years a Slave" recounts the life of Solomon Northup, sold into slavery in 1841.
"Captain Phillips" is about the 2009 hijacking by Somali pirates of a US-flagged cargo ship, and Martin Scorsese's "The Wolf of Wall Street" tells the story of fraudster Jordan Belfort and the excesses of high-finance life.
"It's a great selling point. It's like: 'Look, this is an incredible tale ... and it's true!'
"But also, when you're doing publicity, you can trot out the real person, the real life Philomena Lee, she's been on the circuit," he said, referring to media appearances of the Irish mother who searched for 50 years for her illegitimate son, given away for adoption by Catholic nuns.
"Even with Jordan Belfort, with 'Wolf of Wall Street,' he's been doing publicity," said Gray.
Pop culture professor Robert Thompson said the trend towards reality-based movies goes hand-in-hand with the way television is taking over as the place for big money and big productions.
"'Based on a true story' is nothing new, but it does seem that this is becoming a near-prerequisite for a movie to be taken seriously," the academic from Syracuse University in New York state told AFP.
"As TV has taken on the role of high-brow fiction, movies seem to be searching for their gravitas in the relevance of 'reality'," he added.
Gray added: "I also think one of the reason is, when you're dealing with real life events, it helps in terms of developing the story.
"Because if you're saying... 'I have a little story about a woman who's gonna search for her long-lost son,' you can go in a lot of different directions with that, and you sit around and you debate it.
"But it's like, 'No, this is what really happened, we have to stick with the facts.' It's like you know where the story's gonna start, and you know where it's going to end."