Research & DevelopmentHart & Risley Study Infoture Research

Several hundred research studies over the last 50 years document the importance of talking to and interacting with your baby, especially during the first three years. Many governmental and professional organizations support the importance of the quantity of talk and conversational turns, including the National Institute of Child Health and Human Development, American Speech-Language-Hearing Association, and the Zero To Three Foundation.
Recent brain research also confirms how important parent and caregiver talk is to child development, which is one reason why the American Academy of Pediatrics recommends that children two years and under not be allowed to watch TV or videos. It’s not educational toys, TV, or videos that make your child smart and well-adjusted. It’s you.
What Leading Professionals Say…
“In all my years in speech and language development, I have not seen anything as exciting and groundbreaking as LENA.”
—Dr. Judith K. Montgomery, Ph.D., CCC-SLP
“LENA is the paradigm shift and tool we’ve all been waiting for since Meaningful Differences was published. The world of child language development will never be the same.”
—Dr. Todd R. Risley, Ph.D., co-author of
Meaningful Differences
Foundational Research: Hart & Risley
One of the most important studies in the field of child development is documented in the book, Meaningful Differences, by noted University of Kansas researchers, Drs. Betty Hart and Todd Risley. The remarkable study of parent-child talk and interaction was the inspiration for the development of the LENA System. Hart and Risley discovered, “With few exceptions, the more parents talked to their children, the faster the children’s vocabularies were growing and the higher the children’s IQ test scores at age three and later.”