Fostering Infant/Toddler Mental Health and Language in Underserved Family Child Care Settings

<b>Background:</b> Early language development, a key predictor of later academic achievement, arises out of social interactions and communication. High-quality social and emotional interactions in early child care and education (ECCE) programs may therefore promote language-rich environments for young children. While culturally and linguistically minoritized communities face systemic barriers that limit equitable access to high-quality ECCE including social and emotional learning (SEL) programs, access to evidence-based SEL programs remains inequitable, disproportionately benefiting White, English-speaking, and higher-income ECCE providers. The current study aims to examine how I-T CHILD, a program designed to foster a climate that supports mental health and SEL in ECCE, improves the quality of the language environment using LENA technology. <b>Methods</b>: Implemented at the height of the COVID-19 pandemic, 38 family child care providers located in an urban setting (63.2% Hispanic/Latine; 40% living in poverty) were randomly assigned to the 12-week I-T CHILD program or to the waitlist-control group. Data were analyzed using hierarchical linear modeling procedures. <b>Results</b>: Infants and toddlers cared for by I-T CHILD providers produced significantly more vocalizations (<i>p</i> = 0.002; <i>ES</i> = 1.50) and were exposed to significantly less media and electronic sounds (<i>p</i> = 0.032; <i>ES</i> = -0.97) than infants and toddlers in the waitlist-control condition. <b>Conclusions</b>: Our findings reinforce the importance of the mental health climate in ECCE and its circular effect on early language development. We offer key insights into how mental health climate interventions in ECCE settings can enhance language interactions, center the child, and foster foundational skills linked to long-term academic success for historically underserved populations.