LENA Foundation

Template:Short description The Language Environment Analysis (LENA) is a nonprofit organization that developed a technology system comprising a LENA device, patented processing software, and secure cloud-based data access. LENA technology is utilized by community organizations globally to support interactive talk between children and caregivers. According to LENA, as of 2025, its technology has been adopted by over 500 organizations across 40 countries.

Peer-reviewed studies using the LENA System have been conducted by researchers at Harvard, MIT, Brown University, Stanford University, as well as hospitals. Research applications include investigations into language development in children, autism, child language acquisition, and communication in deaf and hard-of-hearing families.

History

The LENA Research Foundation was established in 2009 through a donation of assets from Infoture Inc. by Terrance and Judith Paul, who were also majority owners of Renaissance Learning Inc. (RLI).

Terry Paul, founder of Renaissance Learning Inc., read Meaningful Differences in the Everyday Lives of Young American Children by Betty Hart and Todd Risley in 1998. This longitudinal study highlighted the correlation between the number of words spoken to children from birth to age three and their language ability and IQ at age three. Inspired by these findings, Paul founded Infoture, Inc. in 2004 to research and develop the LENA System, hiring a team for this purpose. Infoture launched a pilot version in February 2006. In February 2009, the Terrance and Judith Paul donated Infoture's assets and gifted $2 million to establish the LENA Research Foundation as a nonprofit organization. In January 2018, the organization changed its name to LENA and adopted the tagline "Building brains through early talk."

LENA's programs are based on research suggesting that increased conversational engagement in a child's first four years of life may contribute to improved academic and social outcomes. Research from Harvard University suggests that interactive talk between children and caregivers is a significant factor that affects early brain development. Research from MIT published in February 2018 indicated that conversational turns are associated with activation in Broca's area in children. LENA offers several programs designed to support interactive talk between children and caregivers.

Scientific background

Research indicates that early childhood includes critical periods for tasks such as language acquisition. Interactive talk, specifically conversational turns, has been identified as a factor in stimulating brain growth during these years, according to the Center on the Developing Child at Harvard University. Additionally, longitudinal research by LENA suggests that the amount of conversation children experience between the ages of 18 and 24 months is related to their IQ, verbal comprehension, and language skills during adolescence. Research suggests potential outcomes such as reductions in criminal activity, annual returns on investment, and other positive effects.

LENA System

LENA is an acronym for "Language Environment Analysis". LENA technology provides over 25 metrics on a child's natural language environment, including estimates and percentile scores for adult words spoken to the child, conversational turns, and child vocalizations. The system also generates an expressive language developmental age and percentile score based on a child's voiceprint. Some important language metrics include Adult Word Count (AWC), Conversational Turns (CTs), and Child Vocalizations (CVs). AWCs are the number of words a child hears from an adult within a specific period, and CTs occur when a child speaks or responds to an adult and receives a response.

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LENA Device (Digital Language Processor)

A parent or teacher places a LENA device in a child's vest and records a full day of the child's sound environment. The device is then connected to a computer with software that processes the recording. It finds the child's exposure to verbal stimulation, the number of child utterances, and other information. The system also generates percentile scores, which compare the child's vocalizations with other children of the same age.

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The LENA device is worn inside of specially-made, gender-neutral vests.

Product lines

LENA Start

LENA Start is a program for parents that utilizes regular feedback from the LENA System and 13 weekly group sessions to address the home language environment. Since its introduction in 2015, LENA Start has been implemented by school districts, library systems, and other organizations in states including Alabama, California, Iowa, Colorado, and Minnesota. Texas Children's Hospital was the first regional healthcare center to adopt the model. In October 2020, during the restrictions of the COVID-19 pandemic, Read Aloud Delaware began a virtual LENA Start program with families statewide where parents received feedback and participated in one-hour Zoom workshops each week during the 10-week program.

LENA Grow

LENA Grow is a professional development program for teachers in early childhood classrooms. According to LENA's website, "LENA's talk reports for teachers focus primarily on conversational turns, a strong measure of interactive talk." The program trains teachers to increase conversational turns, noting that children can spend up to 60 percent of their time in childcare settings. Before launching at sites around the country, the program was first piloted in Escambia County, Florida.

LENA Home

LENA Home is a supplement to existing parent coaching curricula. Typically, home visitors facilitate the use of the LENA System to help parents track their progress towards increasing interactive talk in their homes.

Developmental Snapshot

The LENA Developmental Snapshot, based on a 52-question parent survey, assesses both expressive and receptive language skills and provides an estimate of a child's developmental age from 2 months to 36 months.

LENA Research Foundation findings

• Parental Perception vs. Reality: Parents often estimate they talk more with their children than they do.
• Maternal Contribution: Mothers are often the primary source of language input, contributing about 75 percent of the total talk in a child's environment.
• Gender Differences: Mothers tend to talk approximately 9 percent more to their daughters than to their sons.
• Firstborn Advantage: Parents tend to engage more in conversation with their firstborn child compared to their subsequent children.
• Timing of Conversations: Most adult talk in a child's environment occurs during the late afternoon or early evening.
• Influence of Talkative Parents: Children of talkative parents are often more likely to be talkative themselves.
• Impact of Television: Increased television viewing correlates with lower language ability scores in children in some studies.
• Autism and Communication: Some studies suggest parents of children with autism tend to speak less as the severity of their child's symptoms increases, while parents may talk more when their child demonstrates stronger language abilities.

External links

• LENA
• PNAS study on automated vocal analysis
• LENA Foundation