R sounds are rough, and L sounds are smooth: Cross-cultural study finds these associations may be universal

People around the world associate a trilled R sound with a rough texture and a jagged shape, and an L sound with a smooth ...
Science Daily

R sounds are rough, and L sounds are smooth, according to cross-cultural study

People around the world associate a trilled R sound with a rough texture and a jagged shape, and an L sound with smooth texture and a flat shape, according to the findings of a new study. Researchers ...
The Spokesman-Review

Solving for ‘R:’ EWU clinic uses ultrasound technology to help children with speech disorders

With an ultrasound probe held beneath his chin, 12-year-old Jack Felker cycled through some of the most common R sounds in American English. He started off by repeating single sounds five times, ...
Science Daily

Ultrasound guides tongue to pronounce 'R' sounds

Using ultrasound technology to visualize the tongue’s shape and movement can help children with difficulty pronouncing “r” sounds, according to a small study. The ultrasound intervention was effective ...