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  • Early Language Exposure and Middle School Language and IQ: Implications for Primary Prevention

    • Recent advances in neuroscience have led to an increased appreciation of the effects of early experience on the brain, with ramifications for language, cognitive, and social-emotional development.1,2 Language development has been especially well studied, with extensive research documenting relations between early exposure to adult language and children’s language capacities through early elementary school.36

      The authors of “Language Experience in the Second Year of Life Predicts Language Outcomes in Late Childhood” extend existing research by using a naturalistic methodology based on analysis of full-day audio recordings (Language ENvironment Analysis, LENA) to demonstrate long-term associations between early language exposure and subsequent child language and IQ through late middle school.7 Gilkerson et al7 found that the strongest predictor was language-based interaction, with relations (less robust) also found for quantity of language exposure. By showing that parent-child verbal interactions in early childhood predict critically important outcomes through age 14 years (∼10 years later), the authors of this study have made a major contribution to this topic, with strong implications for American Academy of Pediatrics policy and clinical practice recommendations.810With these findings, the authors also add to the preponderance of research in which the importance of supporting families toward common goals of developmental progress and educational achievement is demonstrated.6,11,12

      The early environment influences every aspect of child development; in addition to effects on cognitive and language outcomes, recent work has also shown that parent-child verbal interactions also have effects on social-emotional development.13 This speaks to the importance of early language exposure in every domain of early learning and also to the agency with which children elicit stimulation from their caregivers and their environment; children learn through interactions but also use language to elicit and extend the interactions which help them learn. Like language skills, social-emotional skills and self-regulation play vital roles in early learning and school success.14,15

      The authors speak strongly to the importance of interaction during the 18- to 24-month period of “language explosion”; findings suggest that programs seeking to foster language skills in young children should pay careful attention to the context in which young children are exposed to language during this crucial period. Promotion of language-rich and emotionally positive interactions should be the goal, with play and reading aloud offering contexts for parents to provide not only enriched vocabulary but also opportunities and prompts for enriched interactions.1619 In particular, study findings support “primary prevention” of disparities in development and school readiness, beginning early in life before their onset. This is a fundamentally different approach than that of treatment initiatives, which, although also essential, are designed to address problems after their emergence. Importantly, primary prevention can be used to provide an opportunity for population-level delivery across the socioeconomic spectrum, with potential for low cost and cascading impacts across the life span.20

      Because primary care visits and immunizations are especially frequent in the first 2 years of life, a period in which children are not necessarily enrolled in other programs or institution-based care, pediatric primary health care offers a promising and low-cost platform for universal, population-level prevention through relationship- and strengths-based strategies.20 The Reach Out and Read (ROR) program, in which primary care providers offer anticipatory guidance about and modeling of reading aloud (along with developmentally appropriate children’s books) at health supervision visits from birth to 5, is the most established scaled program, reaching 4.7 million children annually.21 ROR emphasizes dialogic reading techniques in provider training and in parent materials, using the books to foster language-rich interactions. Families receiving ROR report more frequent reading with their children and more positive attitudes toward reading aloud, and children in the intervention have shown improved vocabularies.22,23

      A number of other primary prevention initiatives use pediatric primary care to support language interactions through shared book reading and interactive and pretend play. One well-studied example is the Video Interaction Project (VIP), which enhances ROR by adding a parenting coach at each primary care visit who briefly video records parents and children engaging together around a book or toy provided by the program and then immediately reviews the video with the family.24 Positive, sustained impacts of the VIP on relational health broadly and in child development have been shown in studies.25,26 Additional examples include Healthy Steps,27 Thirty Million Words,28 Bridging the Word Gap,29Smart Beginnings (links the VIP in primary care to home visiting through Family Check Up),30 Sit Down and Play,31 and City’s First Readers (links to community partners, eg, libraries).32

      In the study by Gilkerson et al,7 it is shown that patterns of language exposure established early in life are associated with trajectories of child language and IQ through late middle school. These findings are especially remarkable given the heterogeneity of children’s experiences as they grow up. The importance of language-based interactions for developmental outcomes across many important domains adds weight to the urgency of universal primary prevention programs, which will help parents establish positive patterns during the crucial early developmental windows.


        • Accepted July 20, 2018.
      • Address correspondence to Alan L. Mendelsohn, MD, Division of Developmental-Behavioral Pediatrics, Department of Pediatrics, New York University School of Medicine, Bellevue Hospital Center, 550 First Ave, OBV, Room A519, New York, NY 10016. E-mail:
      • Opinions expressed in these commentaries are those of the authors and not necessarily those of the American Academy of Pediatrics or its Committees.

      • FINANCIAL DISCLOSURE: The authors have indicated they have no financial relationships relevant to this article to disclose.

      • FUNDING: NIH grant R01 HD076390. Funded by the National Institutes of Health (NIH).

      • POTENTIAL CONFLICT OF INTEREST: Dr Klass is national medical director of Reach Out and Read (no financial compensation). Dr Mendelsohn is the principal investigator of studies of Reach Out and Read and the Video Interaction Project (no financial compensation).

      • COMPANION PAPER: A companion to this article can be found online at


      1. by Alan L. MendelsohnPerri Klass
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  • 1 FREE trial lesson


      A gift for you!

      LCF Fun Languages Australia would like to give you:

      1 FREE trial lesson

      Redeemable at any time during 2018.

      Contact us to start a new club at your school or childcare!

      1300 707 288

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  • Mandarin on Tuesdays 5-12 yrs at Mossgiel Park Primary School

    • Mandarin on Tuesdays 5-12 yrs at Mossgiel Park Primary School

      Time: 03:30 pm – 04:30 pm              Day: Tuesdays

      Location: 71/75 Scotsburn Way, Endeavour Hills VIC 3802

      Start and End Day: 29/05/2018 to 26/06/2018

      Teacher Name: Dr Ling She

      Classroom: TBA

      Support email:

      Support Number: 0421327545

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  • Even the royal family knows the future is Chinese

    • Four-year-old Prince George is learning Mandarin at school. Let your prince and princess learn Mandarin too! (

      Join LCF Mandarin Club: or ring 1300 707 288 to start a language program at your childcare centre or school.

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