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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
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McFayden, Tyler C.; Fok, Megan; Ollendick, Thomas H. – Journal of Autism and Developmental Disorders, 2022
The current study investigated the impact of birth order on vocabulary and social language development in 1338 first-born and 1049 s-born autistic youth (M age = 9.03 years, SD = 3.57; 86.4% male) from the Simons Simplex Collection. Frequentist and Bayesian analyses revealed mixed findings in language development. There were no differences in…
Descriptors: Birth Order, Language Acquisition, Autism, Pervasive Developmental Disorders
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Gendler-Shalev, Hila; Dromi, Esther – Journal of Child Language, 2022
This article presents data on lexical development of 881 Israeli Hebrew-speaking monolingual toddlers ages 1;0 to 2;0. A Web-based version of the Hebrew MacArthur-Bates Communicative Development Inventories (H-MB-CDI) was used for data collection. Growth curves for expressive vocabulary, receptive vocabulary, actions and gestures were…
Descriptors: Semitic Languages, Language Acquisition, Toddlers, Computer Assisted Testing