One of the oddities in my life as a recently-appointed school director is having to interview candidates for teaching positions. It's odd, because in all the years of teaching college, or running my own businesses, I never hired a single employee. Now I go through the process of interviewing and hiring all the time.
Most candidates who apply for teaching positions are women, and a lot of them are straight out of college, looking for their first teaching position. While interviewing these young women, nearly every one of them displays poor communication skills, characterized by vocal fry.
Here's an educational video about vocal fry: