Decreases the frequency of tantrums by allowing babies to express specific needs like "milk," "more," or "all done".
Baby Signs: How to Talk with Your Baby Before Your Baby Can Talk by Linda Acredolo and Susan Goodwyn is widely considered the foundational text for modern baby sign language. Based on over 20 years of research, it provides a practical framework for reducing toddler frustration by teaching infants simple hand gestures to communicate their needs before they can speak. Core Philosophy and Research
Long-term studies by the authors even claimed higher IQ scores at age eight for children who signed as infants. Practical Techniques
Signing babies may develop larger vocabularies and earlier speaking skills than their non-signing peers.