The experiment by researchers at Louisiana State University found that 86 per cent students had vocal fry when asked to repeat a list of made-up words.
Writing in the Journal of Voice, Todd Gibson, assistant professor in communication science reported: "The results suggest that even when words have no meaning, young female speakers will seek to ...add emphasis with vocal fry.
"Research has several theories as to why women use vocal fry: for example, reflecting sociolinguistic cues such as the need to sound more masculine."