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Jongmin Jung; Eon-Suk Ko – Journal of Speech, Language, and Hearing Research, 2025
Purpose: This study evaluates the impact of temporal synchrony between maternal touch and speech on children's early language development. It investigates whether the proportion of word-touch co-occurrence, overlap, and alignment precision in maternal input influences language acquisition, hypothesizing that such synchrony boosts infants'…
Descriptors: Foreign Countries, Mothers, Parent Child Relationship, Interaction
Miranda Gómez Díaz; Laia Fibla; Rachel Ka-Ying Tsui; Krista Byers-Heinlein – Developmental Psychology, 2024
Sometime before their second birthday, many children have a period of rapid expressive vocabulary growth called the vocabulary spurt. Theories of the underlying mechanisms differ: Accumulator models emphasize the accumulation of experience with words over time to yield a spurtlike pattern, while cognitive models attribute the spurt to cognitive…
Descriptors: Infants, Toddlers, Vocabulary Development, Monolingualism
Theano Kokkinaki; Maria Markodimitraki; Vassilis G. S. Vasdekis – European Journal of Developmental Psychology, 2024
We compared dyad-focused maternal speech (protoconversations and maternal speech describing the dyad) in interactions of mothers with their twin and singleton infants. Nine twins and nine singletons, coming from urban areas of Crete (Greece), were video-recorded at home in spontaneous face-to-face interactions with their mothers, from the 2nd to…
Descriptors: Foreign Countries, Genetics, Twins, Mothers
Krista Byers-Heinlein; Ana Maria Gonzalez-Barrero; Esther Schott; Hilary Killam – First Language, 2024
Vocabulary size is a crucial early indicator of language development, for both monolingual and bilingual children. Assessing vocabulary in bilingual children is complex because they learn words in two languages, and there remains significant controversy about how to best measure their vocabulary size, especially in relation to monolinguals. This…
Descriptors: Infants, Toddlers, French, English Language Learners
Katie R. Jobson – ProQuest LLC, 2024
Infancy is a period of significant change for both the brain and behavior. During the first two years of life, the brain experiences an explosion of synaptic connections and myelination, alongside rapid development in motor, linguistic, and social behavioral abilities. Understanding the relationship between brain development and behavioral…
Descriptors: Infants, Toddlers, Language Acquisition, Brain Hemisphere Functions
Andrea Baraldi Cunha; Iryna Babik; Regina T. Harbourne; Stacey C. Dusing; Lin-Ya Hsu; Natalie A. Koziol; Sarah Westcott-McCoy; Sandra L. Willett; James A. Bovaird; Michele A. Lobo – Grantee Submission, 2024
This study aimed to explore whether early developmental abilities are related to future executive function (EF) in children with motor delays. Fourteen children with motor delays (Mean age = 10.76, SD = 2.55) were included from a larger study. Object interaction and developmental outcomes (Bayley-III) were evaluated at baseline and 3, 6, and 12…
Descriptors: Developmental Disabilities, Psychomotor Skills, Symptoms (Individual Disorders), Executive Function
Jacob I. Feldman; Varsha Garla; Kacie Dunham; Jennifer E. Markfeld; Sarah M. Bowman; Alexandra J. Golden; Claire Daly; Sophia Kaiser; Nisha Mailapur; Sweeya Raj; Pooja Santapuram; Evan Suzman; Ashley E. Augustine; Aine Muhumuza; Carissa J. Cascio; Kathryn L. Williams; Anne V. Kirby; Bahar Keceli-Kaysili; Tiffany G. Woynaroski – Journal of Autism and Developmental Disorders, 2024
Early differences in sensory responsiveness may contribute to difficulties with communication among autistic children; however, this theory has not been longitudinally assessed in infants at increased familial versus general population-level likelihood for autism (Sibs-autism vs. Sibs-NA) using a comprehensive battery of sensory responsiveness and…
Descriptors: Infants, Autism Spectrum Disorders, Sensory Experience, Siblings
Chun-Hao Chiu; Bradford H. Pillow; The Family Life Project Key Investigators – International Journal of Behavioral Development, 2024
The purpose of this study is to investigate the relations among children's symbolic functioning at 15 months, joint attention at 24 months, expressive communication at 24 and 36 months, and executive functioning at 36 months. With the sample from rural areas in the United States collected by the Family Life Project (N = 1,008), a longitudinal data…
Descriptors: Executive Function, Family Life, Expressive Language, Verbal Communication