@article{63799cc5b83545f898ac82a30c870e3a,
title = "Naturalistic Language Recordings Reveal “Hypervocal” Infants at High Familial Risk for Autism",
abstract = "Children's early language environments are related to later development. Little is known about this association in siblings of children with autism spectrum disorder (ASD), who often experience language delays or have ASD. Fifty-nine 9-month-old infants at high or low familial risk for ASD contributed full-day in-home language recordings. High-risk infants produced more vocalizations than low-risk peers; conversational turns and adult words did not differ by group. Vocalization differences were driven by a subgroup of “hypervocal” infants. Despite more vocalizations overall, these infants engaged in less social babbling during a standardized clinic assessment, and they experienced fewer conversational turns relative to their rate of vocalizations. Two ways in which these individual and environmental differences may relate to subsequent development are discussed.",
author = "{the IBIS Network} and Swanson, {Meghan R.} and Shen, {Mark D.} and Wolff, {Jason J.} and Brian Boyd and Mark Clements and James Rehg and Elison, {Jed T.} and Sarah Paterson and Julia Parish-Morris and Chappell, {J. Chad} and Hazlett, {Heather C.} and Emerson, {Robert W.} and Kelly Botteron and Juhi Pandey and Schultz, {Robert T.} and Dager, {Stephen R.} and Lonnie Zwaigenbaum and Estes, {Annette M.} and Joseph Piven and D. Shaw and R. McKinstry and J. Constantino and J. Pruett and C. Evans and L. llins and B. Pike and V. Fonov and P. Kostopoulos and S. Das and G. Gerig and M. Styner and H. Gu",
note = "Funding Information: The authors thank the children and their families for their ongoing participation in this longitudinal study as well as the numerous research assistant and volunteers who have worked on this project. This work was supported by grants through the National Institutes of Health (HD055741 PI Joseph Piven, HD055741-S1 PI Joseph Piven, HD003110 PI Joseph Piven, U54 EB005149 PI Ron Kikinis), the National Science Foundation (IIS-1029679 PI James Rehg), the Simons Foundation (SFARI Grant 140209). Meghan R. Swanson was supported by a Pathway to Independence Award (K99-MH108700) from NIMH and a National Research Service Award (T32-HD40127) from NICHD. Jason J. Wolff was supported by a grant from the National Institute of Mental Health (K01-101653). LENA Research Foundation donated the clothing and digital recording devices used to collect the data presented herein. The funders had no role in study design, data collection, analysis, data interpretation, or the writing of the report. Publisher Copyright: {\textcopyright} 2017 The Authors. Child Development {\textcopyright} 2017 Society for Research in Child Development, Inc.",
year = "2018",
month = mar,
day = "1",
doi = "10.1111/cdev.12777",
language = "English",
volume = "89",
pages = "e60--e73",
journal = "Child Development",
issn = "0009-3920",
number = "2",
}