Early Vocabulary Acquisition
From Birth Order Effect to Child-to-Caregiver Ratio
Bibliographic Data
| ID | 9646147 |
|---|---|
| Authors | Audun Rosslund (0000-0002-2646-8053, University of Oslo, corresponding author), Natalia Kartushina (0000-0003-4650-5832, University of Oslo), Nora Serres (0000-0002-2294-741X, University of Oslo), Julien Mayor (0000-0001-9827-5421, University of Oslo) |
| Year | 2025 |
| Volume | 96 |
| Issue | 4 |
| Pages | 1343-1353 |
| Publication date | 2025-07-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Child Development (JOURNAL) |
| Journal identifiers | ISSN: 0009-3920 • E-ISSN: 1467-8624 |
| Publisher | Oxford University Press (OUP) (PUBLISHER) |
| DOI | 10.1111/cdev.14251 |
| PMID | 40317493 |
| OpenAlex | W4410050814 |
| Language | EN |
| References cited | 42 |
Growing up with multiple siblings might negatively affect language development. This study examined the associations between birth order, sibling characteristics and parent-reported vocabulary size in 6163 Norwegian 8- to 36-month-old children (51.4% female). Results confirmed that birth order was negatively associated with vocabulary, yet exhibited a U-shaped pattern. A data-driven measure of “child-to-caregiver ratio” in the household was developed, in which old-enough siblings—females 1–3 years earlier than males—were considered caregivers for their younger siblings. This measure explained variance in vocabulary better than birth order, and indicates sex-differences in the age at which older siblings contribute to, rather than deplete, available resources. A child-to-caregiver ratio might better capture the interplay between language-learning resources and demands within households
Affect (linguistics) · Birth order · Developmental psychology · Language acquisition · Language development · Linguistics · Norwegian · Order (exchange) · Population · Sibling · Vocabulary · Vocabulary development · Child and Animal Learning Development · Communication · Demography · Language Development and Disorders · Psychology · Reading and Literacy Development
Variability and Consistency in Early Language Learning
Social Behavior at Thirty-Three Months in Same-Sex and Mixed-Sex Dyads
Measurement Properties of the MacArthur Communicative Development Inventories at Ages One and Two Years
Birth order and intellectual development.
Sensitivity and specificity of information criteria
The development of social cognition in adolescence
Increasing Transparency Through a Multiverse Analysis
GlmmTMB Balances Speed and Flexibility Among Packages for Zero-inflated Generalized Linear Mixed Modeling
Maturation of Cognitive Processes From Late Childhood to Adulthood
The weirdest people in the world?
Analyzing input quality along three dimensions
The use of the Internet in collecting CDI data – an example from Norway
The Norwegian Communicative Development Inventories
The More the Merrier? The Effect of Family Size and Birth Order on Children's Education
The Effect of Older Siblings on Language Development as a Function of Age Difference and Sex
The influence of sibship composition on language development at 2 years of age in the Elfe birth cohort study
Analyzing the effect of sibling number on input and output in the first 18 months
Diversity and representation in infant research
Tablet assessment of word comprehension reveals coarse word representations in 18– 20‐month‐old toddlers
The Role of Emotional Reactivity, Self‐regulation, and Puberty in Adolescents' Prosocial Behaviors
Prosocial Behavior in Adolescence
Maternal Expressed Emotion Predicts Children's Antisocial Behavior Problems
Peer imitation by toddlers in laboratory, home, and day-care contexts
Rethinking household size and children’s language environment
The effect of older sibling, postnatal maternal stress, and household factors on language development in two- to four-year-old children
The Impact of Childhood Intelligence on Later Life
Family Size and the Quality of Children
Adolescent caretaking of younger siblings
| Citation velocity | historical |
|---|---|
| Highly cited | No |