Babysign classes are increasingly popular across the UK. Benefits are said to include increasing child vocabulary, reducing frustration, and improving parent-child relations. A further relationship between the use of babysign and maternal mind-mindedness (MM) has been suggested. It was hypothesized here that parents choosing babysign classes would…

A study of the signing of six deaf preschoolers found that they produced phonological and morphological errors, and semantic overgeneralizations, comparable to those made by hearing children when learning to speak. This suggests that deaf children actively construct sign language rules in the same way that hearing children build up the rules of…