Patterns of maternal interactive behaviors and dual vocabulary development in Mexican American children.

Children learn the words of their native language(s) from interactions with their caregivers. Although previous research has found that the language children hear during those interactions predicts vocabulary outcomes, few studies have investigated how qualitative features of social interactions work together to affect children's vocabulary development, particularly for underresourced, language minoritized children. This study examined patterns of maternal interactive behaviors during toddlerhood in relation to children's later Spanish and English vocabulary development among 318 low-income, Mexican American families. Five maternal behaviors (acknowledging, elaborating, gaze, vocal appropriateness, and overriding) were coded from video recordings at age 24 months. At 36 and 54 months, child expressive vocabulary was assessed in both English and Spanish. Latent class analysis identified five distinct patterns of maternal interactive behaviors, which differentially supported or compromised child expressive language in English and Spanish. Implications of these findings for better understanding the role of caregiver interactions in dual language vocabulary development are discussed. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Developmental Trajectories of Maternal Sensitivity across the First Year of Life: Relations among Emotion Competence and Dyadic Reciprocity.

OBJECTIVE: Maternal sensitivity is a commonly used construct to capture the quality of mother-child interactions, but inconsistencies in conceptualizing and defining maternal sensitivity limit understanding of how sensitive caregiving may be associated with child development. The purposes of this study are to (1) examine and compare the developmental trajectories of individual maternal sensitivity behaviors to that of a global index of sensitivity across the first year of infant life and (2) determine whether differences in trajectories of sensitivity are meaningful for infant emotion competence and dyadic reciprocity at 12 months. DESIGN: A total of 322 low-income, Mexican American mothers and infants were observed during a free play task at 3, 4.5, 6, and 12 months. Observations were coded for 11 distinct behaviors known to compose maternal sensitivity. At 12 months, mother-infant interactions were also coded for dyadic reciprocity, and mothers reported on infant emotion competence. RESULTS: Latent growth models indicated that individual sensitivity behaviors differed from the global index of sensitivity with respect to initial levels and slopes, with increasing (e.g., vocal appropriateness), decreasing (e.g., touch), and stable (e.g., elaboration) trajectories. The individual and global indices of sensitivity differed in prediction of emotion competence and dyadic reciprocity. Trajectories of global and individual indices of maternal sensitivity operated similarly in predicting dyadic reciprocity, with the exception of consistency of style. In contrast, the global index of sensitivity was unrelated to emotion competence, and only initial levels of positive affect emerged as significant predictors of emotion competence. CONCLUSIONS: The findings offer a more nuanced understanding of maternal sensitivity and suggest that component aspects of maternal sensitivity uniquely contribute to child and family competencies.