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…

Artificial Intelligence (AI) chatbots, with their ability to engage in conversations that resemble human interactions, have been increasingly applied to language teaching. Most recent review studies overlook student learning outcomes and the methods to achieve these outcomes in chatbot-supported language learning. Activity Theory (AT) offers a…

Purpose: The present study explored the extent to which early prelinguistic communication skills predict expressive language in toddlers with autistic siblings (Sibs-autism), who are known to be at high likelihood for autism and language disorder, and a comparison group of toddlers with non-autistic older siblings (Sibs-NA). Method: Participants…

Background: Vocabulary learning is an essential dimension of foreign language learning. The learners have a huge responsibility in this task. Among other factors, time constraints and an overall lack of maintained motivation on the part of students makes it especially challenging. Consequently, improving vocabulary learning requires strategies to…

This paper discusses a study that considered how the quality of three different learning environments, indoor classrooms, outdoor classrooms and forest schools, for children aged 3-5 years, is associated with the quality of their utterances. Adopting a theoretical framework of interactionism it was found that, within the study settings (n = 4),…

Since the beginning of the 21st century, heritage language studies have drawn unprecedented attention from language-related research areas. Despite the flourishing research on heritage language learning, relatively few studies have examined the motivational profiles of L1 English speakers engaged in heritage language learning. Theoretical…

Five-to-six-year-olds' abilities to detect and solve ambiguities in spoken language have been found to be a predictor of their later reading abilities in first-to-third grade. However, the origins of this relationship remain unclear. Success in ambiguity detection may be reflective of overall language attainment, which varies with socioeconomic…

Early language environments are considered to support children's language development; however, it is unclear to what extent early language environments relate to skills other than language abilities. We examined (1) whether the preschool language environment (measured as adult words heard and conversational turns) is associated with children's…

In urban, industrialized cultures, the best predictor of how children acquire their native language is child-directed speech from adults. However, in many societies, children are much less exposed to such input. What has remained unexplored is the impact of another type of input: other children's speech. In cross-cultural head-turn experiments, we…

Children who receive cochlear implants develop spoken language on a protracted timescale. The home environment facilitates speech-language development, yet it is relatively unknown how the environment differs between children with cochlear implants and typical hearing. We matched eighteen preschoolers with implants (31-65 months) to two groups of…

Extensive research has shown that children's early words are learned through sensorimotor experience. Thus, early-acquired words tend to have more concrete meanings. Abstract word meanings tend to be learned later but less is known about their acquisition. We collected meaning-specific concreteness ratings and examined their relationship with…

Second language (L2) viewing with captions (i.e., L2 on-screen text) is now a proliferating as well as promising area of L2 acquisition research. The goal of the present meta-analysis was to examine (a) the relationship between captioned viewing and incidental vocabulary learning and (b) what variables related to learners, treatment, methodology,…

Introduction: Effective parenting can stimulate the development of children with visual impairments. However, there is limited research on the specific parenting behaviors that contribute to these developmental outcomes. The current research investigated the relationship between parenting behavior and developmental outcomes--specifically in…

This longitudinal study - conducted in the Midwestern United States - examines the child-level factors that promote Spanish-English bilingual toddlers' (n = 47; M[subscript age] = 18.80 months; SD[subscript age] = 0.57) productive vocabulary skills from 18 to 30 months of age. At 6-month intervals, caregivers reported on toddlers' Spanish and…

Adolescent mothers (AMs) often experience limited academic and financial attainment and higher rates of mental health disorders, which may affect their relationships with their children. Although children of AMs are at higher risk for developmental delays, there is no clear evidence of the relationships between mother characteristics and child…