Research Findings: Storybooks provide opportunities for children to encounter new words in context and build vocabulary. Storybooks intended for dual-language learners (DLLs) can come in two types -- immersive monolingual second language (L2) books, or an emerging style of "code-switching" books written predominantly in a child's…

Research Findings: Children's oral language skills lay the foundation for later literacy and can be fostered through responsive conversations with teachers. However, such conversations are rare in preschool, particularly between teachers and dual language learners (DLLs), or students who speak a minoritized language at home. DLLs benefit when…

Research Findings: We examined the amount of preschool lead/assistant teachers' English/Spanish language use and relations between quality of teacher-child interactions, and Dual Language Learners' (DLLs) English/Spanish bilingual vocabulary in 31 English-medium Head Start classrooms. Measures in this study included (a) children's conceptual…

Research Findings: A social validity measure was used to examine 56 bilingual preschool teachers' perceptions and acceptability of an interactive shared book reading vocabulary intervention implemented in English with Spanish-speaking preschool children (N = 334) in a dual language program model. Social validity outcomes indicated that bilingual…

Research Findings: This longitudinal study investigated the Spanish vocabulary development of dual-language-learning (DLL) children (N = 150) from Spanish-speaking, low-income, predominantly immigrant homes who were enrolled in a state-funded preschool program that provided instruction in Spanish. Children's Spanish vocabulary trajectories were…

Research Findings: This study examined associations between the expressive vocabulary of classroom peers and children's own vocabulary knowledge using conceptual scoring in a linguistically diverse sample of 4-year-olds who attended universal preschool programs in a metropolitan area. Higher peer conceptually scored expressive vocabulary was…

Research Findings: This study examined the heterogeneity in Spanish-speaking children's (N = 117; M age = 53 months; SD = 5 months; 57% boys) vocabulary and letter-word skills in English and Spanish after one year of preschool and the extent to which early self-regulation abilities (i.e., executive function and effortful control) were associated…

Research Findings: Social-emotional competence is especially important for children living in poverty, and effective assessment of social-emotional skills is critical. This study examined parent-teacher agreement and reliability of the Devereux Early Childhood Assessment (DECA; P. A. LeBuffe & J. A. Naglieri, 1999) English and Spanish forms in a…