This is a speech sound process known as gliding. ‘R’ is a tricky sound for little children, and is often learnt around age 5 plus.

Why are some speech sounds more difficult to produce and perceive than others? This question was originally answered on Quora by Katharine Brown Nielson. Newsletters Games Share a News Tip ...

Examining how primates make vowel sounds pushes timeline for speech evolution back by 27 million years Published: December 11, 2019 2:03pm EST Thomas R. Sawallis , University of Alabama , Louis ...