This study aims to enhance our knowledge of the associations between the quality of the language-learning environment in toddler childcare groups and children's vocabulary development from age 3 to age 5. Participants were 1,131 children (48% girls; age at T1 assessment: M = 35.5 months, SD = 2.7; age at T2 assessment: M = 60.3 months, SD = 1.4)…

Studying anxiety in neurogenetic syndromes may inform the intersection of biological and developmental risks, facilitating effective and targeted interventions. We longitudinally examined stranger fear in infants and toddlers with fragile X syndrome (FXS; n = 46) and typical controls (n = 33), as well as associations between observed stranger fear…

The First Year Inventory is a parent-report measure designed to identify 12-month-old infants at risk for autism spectrum disorder. First Year Inventory taps behaviors that indicate risk in the developmental domains of sensory--regulatory and social--communication functioning. This longitudinal study is a follow-up of 699 children at 3 years of…

As part of a longitudinal study, infant/toddler pretend play development and maternal play modelling were investigated in dyadic context. A total of 21 children were videotaped in monthly play sessions with their mothers, from age 8 to 17 months. Child and mother pretend play frequencies and levels were measured using Brown's Pretend Play…

Purpose: The purpose of this study was to examine and compare the development of proto-imperative and proto-declarative utterances in normally developing, non-neonatally screened, profoundly deaf toddlers. Method: Both types of proto-declarative are considered to be the most basic prelinguistic and early linguistic communicative functions.…

Investigates the antecedents of individual differences in cognitive/language competence for 121 24-month-olds who were also assessed at 6 and 13 months. Warm verbal interactions between mother and child at three ages were associated with child competence at 24 months. Socioeconomic status was also modestly correlated. (Author/CB)

Examined psychometric properties of Parenting Stress Index. Subjects were 191 low-income, urban African American mothers. Found acceptable subscale internal consistency and stability over six months. Concurrent validity revealed high convergence across measures among mothers reporting consistent stress. Subjects reported elevated stress levels in…