journal article Open Access Jan 06, 2024

Analyzing the effect of sibling number on input and output in the first 18 months

Infancy Vol. 29 No. 2 pp. 175-195 · Wiley
View at Publisher Save 10.1111/infa.12578
Abstract
AbstractPrior research suggests that across a wide range of cognitive, educational, and health‐based measures, first‐born children outperform their later‐born peers. Expanding on this literature using naturalistic home‐recorded data and parental vocabulary reports, we find that early language outcomes vary by number of siblings in a sample of 43 English‐learning U.S. children from mid‐to‐high socioeconomic status homes. More specifically, we find that children in our sample with two or more—but not one—older siblings had smaller productive vocabularies at 18 months, and heard less input from caregivers across several measures than their peers with less than two siblings. We discuss implications regarding what infants experience and learn across a range of family sizes in infancy.
Topics

No keywords indexed for this article. Browse by subject →

References
50
[12]
Bunce J. Soderstrom M. Bergelson E. Rosemberg C. Stein A. Migdalek M. &Casillas M.(2020).A cross‐cultural examination of young children’s everyday language experiences[Preprint]. 10.31234/osf.io/723pr
[28]
Institute for Family Studies & Wheatley Institution. (2019).World family map 2019: Mapping family change and child well‐being outcomes. Institute for Family Studies.https://ifstudies.org/reports/world‐family‐map/2019/executive‐summary
[29]
Jakiela P. Ozier O. Fernald L. &Knauer H.(2020).Big sisters.Policy research working papers 9454.https://openknowledge.worldbank.org/server/api/core/bitstreams/54b5d934‐3263‐5e51‐93af‐7d1e9e619804/content
[33]
lmerTest Package: Tests in Linear Mixed Effects Models

Alexandra Kuznetsova, Per B. Brockhoff, Rune H. B. Christensen

Journal of Statistical Software 10.18637/jss.v082.i13
[36]
Office for National Statistics (2018)
[38]
Linguistic Environment of Secondborn Children

Yuriko Oshima-Takane, Medina Robbins

First Language 10.1177/0142723703023001002
[41]
R Core Team (2019)
[43]
Analyzing input quality along three dimensions: interactive, linguistic, and conceptual

Meredith L. Rowe, Catherine E. Snow

Journal of Child Language 10.1017/s0305000919000655
[48]
United Nations (2017)
[49]
United States Census Bureau. (2010).Household type by number of people under 18 years(No. PCT16).https://data.census.gov/cedsci/table?q=number%20of%20children&hidePreview=false&tid=DECENNIALSF12010.PCT16&t=Children&vintage=2018
Metrics
9
Citations
50
References
Details
Published
Jan 06, 2024
Vol/Issue
29(2)
Pages
175-195
License
View
Funding
National Institutes of Health Award: DP5‐OD019812
Cite This Article
Catherine Laing, Elika Bergelson (2024). Analyzing the effect of sibling number on input and output in the first 18 months. Infancy, 29(2), 175-195. https://doi.org/10.1111/infa.12578
Related

You May Also Like