Hollywood has a lady problem.

For all the hoopla over women-centric TV shows, and a few movies with female main characters, women have been underrepresented on screen for decades, and across all genres.

One study found that in 2013, only 29 percent of all speaking characters were female.

Dr. Stacy Smith worked on that study and has an idea for how to fix the gender imbalance in film.

She's the Director of the Media, Diversity and Social Change initiative at the University of Southern California's Annenberg School and joins Take Two.