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Angelica Buerkin-Pontrelli; Daniel Swingley – Developmental Science, 2025
When infants hear sentences containing unfamiliar words, are some language-world links (such as noun-object) more readily formed than others (verb-predicate)? We examined English learning 14-15-month-olds' capacity for linking referents in scenes with bisyllabic nonce utterances. Each of the two syllables referred either to the object's identity,…
Descriptors: Infants, Phrase Structure, Verbs, Language Acquisition
Anjie Cao; Molly Lewis; Sho Tsuji; Christina Bergmann; Alejandrina Cristia; Michael C. Frank – Developmental Science, 2025
Developmental psychology focuses on how psychological constructs change with age. In cognitive development research, however, the specifics of this emergence is often underspecified. Researchers often provisionally assume linear growth by including chronological age as a predictor in regression models. In this work, we aim to evaluate this…
Descriptors: Language Acquisition, Infant Behavior, Age Differences, Developmental Stages
Brandon M. Woo; Shari Liu; Elizabeth S. Spelke – Developmental Science, 2024
Does knowledge of other people's minds grow from concrete experience to abstract concepts? Cognitive scientists have hypothesized that infants' first-person experience, acting on their own goals, leads them to understand others' actions and goals. Indeed, classic developmental research suggests that before infants reach for objects, they do not…
Descriptors: Infants, Cognitive Processes, Inferences, Infant Behavior
Luis E. Muñoz; Natalia Kartushina; Julien Mayor – Developmental Science, 2024
Pacifier use during childhood has been hypothesized to interfere with language processing, but, to date, there is limited evidence revealing detrimental effects of prolonged pacifier use on infant vocabulary learning. In the present study, parents of 12- and 24-month-old infants were recruited in Oslo (Norway). The sample included 1187 monolingual…
Descriptors: Infants, Correlation, Infant Behavior, Foreign Countries
Hanna Halkola; Charlotte Viktorsson; Emily J. H. Jones; Tony Charman; Terje Falck-Ytter; Giorgia Bussu – Developmental Science, 2025
Adaptive behaviour refers to the everyday skills that individuals are expected to have to function independently, based on their age and societal norms. Currently, we know little about the role of genetic and environmental factors in parent-rated adaptive behaviours in early infancy. The aim of this study was to investigate the aetiological…
Descriptors: Environmental Influences, Infant Behavior, Infants, Genetics
Crossing the Boundary: No Catastrophic Limits on Infants' Capacity to Represent Linguistic Sequences
Natalia Reoyo-Serrano; Anastasia Dimakou; Chiara Nascimben; Tamara Bastianello; Daniela Lucangeli; Silvia Benavides-Varela – Developmental Science, 2025
The boundary effect, namely the infants' failures to compare small and large numerosities, is well documented in studies using visual stimuli. The prevailing explanation is that the numerical system used to process sets up to 3 is incompatible with the system employed for numbers >3. This study investigates the boundary effect in 10-month-old…
Descriptors: Infants, Language Acquisition, Speech Communication, Language Processing
Áine Ní Choisdealbha; Adam Attaheri; Sinead Rocha; Natasha Mead; Helen Olawole-Scott; Maria Alfaro e Oliveira; Carmel Brough; Perrine Brusini; Samuel Gibbon; Panagiotis Boutris; Christina Grey; Isabel Williams; Sheila Flanagan; Usha Goswami – Developmental Science, 2024
It is known that the rhythms of speech are visible on the face, accurately mirroring changes in the vocal tract. These low-frequency visual temporal movements are tightly correlated with speech output, and both visual speech (e.g., mouth motion) and the acoustic speech amplitude envelope entrain neural oscillations. Low-frequency visual temporal…
Descriptors: Infants, Child Development, Diagnostic Tests, Speech Communication
Marina Kalashnikova; Leher Singh; Angeline Tsui; Eylem Altuntas; Denis Burnham; Ryan Cannistraci; Ng Bee Chin; Ye Feng; Laura Fernández-Merino; Antonia Götz; Lisa Gustavsson; Jessica Hay; Barbara Höhle; René Kager; Regine Lai; Liquan Liu; Ellen Marklund; Thierry Nazzi; Daniela Santos Oliveira; Anne Marte Haug Olstad; Anthony Picaud; Iris-Corinna Schwarz; Feng-Ming Tsao; Patrick C. M. Wong; Pei Jun Woo – Developmental Science, 2024
We report the findings of a multi-language and multi-lab investigation of young infants' ability to discriminate lexical tones as a function of their native language, age and language experience, as well as of tone properties. Given the high prevalence of lexical tones across human languages, understanding lexical tone acquisition is fundamental…
Descriptors: Auditory Discrimination, Infants, Monolingualism, Bilingualism
Caroline Beech; Daniel Swingley – Developmental Science, 2024
Psycholinguistic research on children's early language environments has revealed many potential challenges for language acquisition. One is that in many cases, referents of linguistic expressions are hard to identify without prior knowledge of the language. Likewise, the speech signal itself varies substantially in clarity, with some productions…
Descriptors: Phonetics, Infants, Psycholinguistics, Language Acquisition
Zuzanna Laudanska; Karolina Babis; Agata Koziol; Magdalena Szmytke; Peter B. Marschik; Dajie Zhang; Anna Malinowska-Korczak; David López Pérez; Przemyslaw Tomalski – Developmental Science, 2025
Speech development occurs in highly variable environments; however, little is known about the effect of situational context on emerging infant vocalizations. At 4 time points (4, 6, 9, and 12 months), we longitudinally measured vocalizations of 104 White infant-caregiver dyads (41 girls) during three play contexts: book-sharing, toy play, and…
Descriptors: Context Effect, Interpersonal Communication, Infants, Speech Communication
Andres H. Mendez; Chen Yu; Linda B. Smith – Developmental Science, 2024
Traditionally, the exogenous control of gaze by external saliencies and the endogenous control of gaze by knowledge and context have been viewed as competing systems, with late infancy seen as a period of strengthening top-down control over the vagaries of the input. Here we found that one-year-old infants control sustained attention through head…
Descriptors: Infants, Eye Movements, Attention, Visual Learning
Zhou, Xin; Wang, Luchang; Hong, Xuancu; Wong, Patrick C. M. – Developmental Science, 2024
The speech register that adults especially caregivers use when interacting with infants and toddlers, that is, infant-directed speech (IDS) or baby talk, has been reported to facilitate language development throughout the early years. However, the neural mechanisms as well as why IDS results in such a developmental faciliatory effect remain to be…
Descriptors: Child Language, Infants, Interpersonal Communication, Vocabulary Development
The Slow Emergence of Gaze- and Point-Following: A Longitudinal Study of Infants from 4 to 12 Months
Yueyan Tang; Marybel Robledo Gonzalez; Gedeon O. Deák – Developmental Science, 2024
Acquisition of visual attention-following skills, notably gaze- and point-following, contributes to infants' ability to share attention with caregivers, which in turn contributes to social learning and communication. However, the development of gaze- and point-following in the first 18 months remains controversial, in part because of different…
Descriptors: Eye Movements, Nonverbal Communication, Longitudinal Studies, Infants
Elena Luchkina; Fei Xu – Developmental Science, 2024
Previous research shows that infants of parents who are more likely to engage in socially contingent interactions with them tend to have larger vocabularies. An open question is "how" social contingency facilitates vocabulary growth. One possibility is that parents who speak in response to their infants more often produce larger…
Descriptors: Vocabulary Development, Contingency Management, Parent Child Relationship, Child Language
Ori Ossmy; Danyang Han; Patrick MacAlpine; Justine Hoch; Peter Stone; Karen E. Adolph – Developmental Science, 2024
What is the optimal penalty for errors in infant skill learning? Behavioral analyses indicate that errors are frequent but trivial as infants acquire foundational skills. In learning to walk, for example, falling is commonplace but appears to incur only a negligible penalty. Behavioral data, however, cannot reveal whether a low penalty for falling…
Descriptors: Physical Activities, Robotics, Error Patterns, Infants
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