Using LENA Pro to Compare the Impact of Mother-Infant and Peer
Infant-Infant Interactions on Infant Volubility
Much research has been completed on infant volubility; however, limited research has been conducted on the
volubility of five-month-old infants in varied interactive contexts. One could posit that lingering technological
constraints have hindered such focused investigations; historically, communications researchers have had to rely
on cumbersome floor microphones and other bulky electronic equipment when attempting to capture the dynamics of
infant interactions.
Therefore, as a graduate student in the communications sciences department at Valdosta State University, I was
excited to learn of the LENA Pro system. Using a lightweight, iPod-sized digital language processor positioned at a
child's chest level in specially designed clothing, researchers now have the ability to unobtrusively gather and
automatically process and analyze many hours of recording data. Once I realized the implications such a device
could have on current and future communications research at Valdosta it was easy for me to convince my department
to invest in LENA Pro.
With LENA I had a new research opportunity. I knew that a considerable amount of research had been done on the
effect a mother has on her infant and the vocalizations the infant produces; and I knew that some research had
been completed on the effect that peer infants have on an infant and the vocalizations the infant produces.
Nevertheless, very little research had been done comparing the two types of interaction. As a result, I set out to
study three 5-month-old infants with their mothers and then with each other as peer infants to figure out which
environment produced more volubility.
Several characteristics of the LENA Pro system aided me in my pursuit. Foremost, the portability and versatility
of the system greatly facilitated my ability to study infants. There was no need to set up, monitor, and
disassemble unwieldy equipment or spend hours transcribing recordings or deciphering notes. Moreover, LENA Pro
time-stamped all of the data and organized the data into specific categories, making it easy to pinpoint the
utterances and vocalizations of all three study participants. However, I did face one challenge. After exporting
LENA data to Microsoft Excel, I had trouble finding the data I needed on "Other Child" vocalizations.
Fortunately, the foundation support team helped me navigate the Excel application and utilize special Excel
formulas to obtain the information.
Ultimately, I discovered several things about infant volubility that surprised me. Like a mother's interactions with
her infant, peer infant interactions with an infant may produce a great deal of infant volubility. When I averaged all
of the infant manual volubility counts together for both contexts, the data revealed that 47 percent of the infant
volubility was with the mother and that 53 percent of the infant volubility was with the peer infants. In
addition, I learned that infant vocalizations are not just happy sounds but also upset or angry vocalizations that
sound similar to cries.
I am quite pleased with these results—results that I might not have reached without LENA Pro and the wonderful
support team at the LENA Foundation.
Leah A. Yates is a graduate student in the communications sciences department at
Valdosta State University in Valdosta, Georgia.
The UC Davis M.I.N.D. Institute's Distinguished Lecturer Series is a forum for nationally and internationally
renowned researchers to present their findings and insights on neurodevelopmental disorders. Recently, LENA
Foundation Scientific Advisory Board member Steven F. Warren, Ph.D., had the honor of
contributing with
"Automatically Mapping the Language Learning Environment of Young Children with Autism: Implications for Assessment and Intervention."
In addition to explaining the cumulative effects hypothesis and importance of maternal responsivity in early
childhood development, the University of Kansas professor of human development and family life provides an overview
of the LENA System, LENA studies, and applications of LENA technology for children with autism.
Dr. Warren's paper "What Automated Vocal Analysis Reveals About the Vocal Production and Language Learning
Environment of Young Children with Autism" has been published in the Journal of Autism and Developmental Disorders (JADD).
Babies May Pick Up Language Cues In Womb
By Nell Greenfieldboyce
A new study reveals that the melody of a newborn's cries seems to be influenced by the sound of the parents' native tongue. The findings suggest that crying infants may be imitating the patterns of the language they heard before they were born.
Listen to story
A Powerful Identity, a Vanishing Diagnosis
By Claudia Wallis
It is one of the most intriguing labels in psychiatry. Children with Asperger's syndrome, a mild form of autism, are socially awkward and often physically clumsy, but many are verbal prodigies, speaking in complex sentences at early ages, reading newspapers fluently by age 5 or 6 and acquiring expertise in some preferred topic — stegosaurs, clipper ships, Interstate highways — that will astonish adults and bore their playmates to tears.
Read more
Baby Einstein boasts prove not so smart for Disney
By Fionola Meredith
WHEN Baby Einstein videos were launched in 1997, they were sold as powerful brain-boosters for babies, combining "visual and linguistic experiences that facilitate the development of the brain" and "contributing to brain capacity". It seemed that all you had to do was sit your baby down in front of Baby Einstein, with its bright, colourful patterns and synthesizer versions of Mozart classics, and hey presto, you'd soon have a tiny prodigy on your hands.
Read more
"I was introduced to the LENA System in the fall of 2009 at the Division for Early
Childhood (DEC) conference. After speaking with the LENA team at the event, I
realized the system would be a 'godsend' for gathering data for my dissertation. I
explained LENA to my dissertation chair and committee, and they approved the use of
the system. I am currently conducting my pilot study and will begin work on my
dissertation in January 2010. The data analysis features of the LENA Pro system,
particularly the word and vocalization count and conversational turns features,
have been saving me hours of analysis time."
-
Judith Anne Lakawicz Losh (right), lecturer on birth-kindergarten education at the University of North Carolina at Pembroke
University of Minnesota Location: 325 Education Sciences Building, Twin Cities Campus
Date: December 4, 2009
The University of Minnesota will be hosting the LENA Foundation for a special half-day series of
presentations and discussions on the LENA System. For more information contact Sara Zettervall at
sarazet@umn.edu or 612-625-2252.
The International Society on Infant Studies (ISIS) presents the Biennial International Conference on
Infant Studies as an opportunity for researchers and practitioners to congregate and discuss new research and theory
in the field of infant development.
The Gatlinburg Conference is one of the leading conferences in the
country for behavioral scientists engaged in research in intellectual and related
developmental disabilities. This year's theme is "Fragile X Syndrome: Frontiers of Behavior and Biology."
This spring, experts in fields ranging from audiology and speech-language
pathology to child psychology and pediatrics will gather in the Mile High City for the First
LENA Users Conference. The forum will enable researchers to share their findings and offer an
opportunity for those new to the LENA System to learn more about the technology.
The AG Bell conference not only provides information on hearing health and technology but
also presentations on the latest research in hearing loss.
Thanks!
This eNewsletter exists to connect the community of parents,
professionals, and researchers who are interested in child development and language acquisition.
LENA Foundation is the creator of the LENA™ System. The system will help you to collect and assess the natural language environment of children. For more information, visit www.lenafoundation.org or www.lenababy.com.
To purchase the LENA System, call 866-503-9918.
LENA Foundation 5525 Central Avenue, Suite 100, Boulder, CO 80301-2820
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