Signing babies may develop larger vocabularies and earlier speaking skills than their non-signing peers.
Long-term studies by the authors even claimed higher IQ scores at age eight for children who signed as infants. Practical Techniques Baby Signs How to Talk with Your Baby Before Yo...
The authors, both child development experts, argue that babies often have the desire to communicate long before they possess the vocal muscle control to do so. Their research suggests that signing can: Signing babies may develop larger vocabularies and earlier
Decreases the frequency of tantrums by allowing babies to express specific needs like "milk," "more," or "all done". both child development experts