Research on sources of individual difference in parental Infant-Directed Speech (IDS) is limited and there is a particular lack of research on fathers' compared to mothers' speech. This study examined the predictive relations between infant characteristics and variability in paternal lexical diversity (LD) in dyadic free play with two-year-olds (M…

This 4-wave longitudinal study evaluated stability of core language skill in 421 European American and African American children, half of whom were identified as low (n = 201) and half of whom were average-to-high (n = 220) in later language skill. Structural equation modeling supported loadings of multivariate age-appropriate multisource measures…

We evaluated over 200 participants semiannually from 12 to 48 months of age on measures of intellectual (Bayley Scales, Stanford-Binet Scale) and verbal (MacArthur-Bates Inventory, Peabody Picture Vocabulary Test) status. Structural equation modeling and hierarchical linear (growth curve) analyses were applied to address the nature of development…

The reliability and validity of three measures of infant temperament were compared in this study. The measures included the revised Carey (1978) Infant Temperament Questionnaire, a version of the Bayley (1969) Infant Behavior Record revised for completion by the parent, and a modified version of Buss and Plomin's (1975) EASI, an acronym standing…

Aimed to establish extent to which toddlers' social behaviors in recurrent play groups may become characterized by an increased consistency and predictability during second year of life, particularly first versus third trimester. Concurrent observations in contrasting settings provided data for examining differences in extent of cross-situational…

Factor analysis of 25 rating scales from Bayley's infant behavior record were performed for a sample of about 300-400 infant twins tested one or more times between 3 and 24 months of age. The analyses provided five major and two minor factors that were considerably consistent at all ages. (Author/DB)

Indicates that the Bayley Scales are a useful assessment tool for characterizing the behavior of premature infants. Results further indicate the need for going beyond summary scores of mental and motor performance and assessing performance in specific areas to obtain a more meaningful picture of individual infants' development. (RH)

Post-institutionalized Chinese and Eastern European children participated in two emotion understanding tasks. In one task, children selected facial expressions corresponding to four emotion labels (happy, sad, angry, scared). The second task required children to match facial expressions to stories describing situations for these emotions. While…

This book contains a collection of papers that focus on normal infant development, particularly from the standpoint of learning. Written by leading experts from a member of disciplines, these papers deal with topics such as: the examination and observation of infants, including neurological, neuropsychological, and neurobehavioral aspects;…