New research says “baby signing classes ‘fail to boost toddlers’ language skills”

From an interesting article in the Telegraph. Any thoughts?

Personally, I’d never read that baby signing would boost language skills, just aid in earlier communication since babies’ hand coördination develops earlier than physiology for word-formation.  For me, it was a great bridge as we didn’t know what language our little P or C would start using for their first words.

I’d love to hear about other people’s experience.