Investigated whether and when children establish various semantic relations between old and new words. Fifty 2-year olds were taught labels for objects previously referred to by an overextended term. Findings are discussed in light of theories of lexical development, particularly with regard to conceptualizations of constraints on the acquisition…

Studied 2-year olds' understanding of pretense expressions of independent agency in scenarios in which a doll acted as the agent of a series of pretend events. Found no gender differences in the doll's imaginary intentions, but older toddlers performed reliably better than younger. Episodes requiring enacting conclusions to events that began with…

Four experiments assessed infants' ability to solve isomorphic problems and explored the nature of early representations. Found that 13-month-olds transferred a modeled strategy across isomorphic problems, whereas 10-month-olds transferred only after multiple source problems or high perceptual similarity between problems. Comprehension of the…

Analysis of 38 children under 2 with subdural hematomas found the most common causes were nonaccidental injury (55%), accidents (39%), and nontraumatic causes (6%). Also, the frequent presence of retinal hemorrhages, bone and rib fractures, delay in presentation, and young age suggests child abuse as the most common cause of these injuries.…

This paper tested a theory of syllable prominence with 11 children (ages 11 to 26 months). The theory proposes that syllable prominence is a product of two orthogonal suprasegmental systems: stress/accent peaks and phrase boundaries. Use of the developed prominence scale found it parsimoniously accounted for observed biases in syllable omissions…

In this study, 12 approaches used in analyzing developmental progress of participants in early intervention services were classified into one of five categories and 10 of these approaches were examined by using data from one early intervention program. The comparison concludes that the Wolery (1983) approach is most appropriate. (Author/CR)

This study examined phonological changes in the conversational speech of children between the ages of 2 and 3 years. Phonological analysis of conversational samples obtained from the same children at three-month intervals showed significant differences among children in rates of final consonant deletion, cluster reduction, vowelization, and…

A study examined the validity of the Screening Tool for Autism in Two-Year-Olds (STAT) as a stage 2 screening instrument in a clinic-based sample of two-year-olds with autism (n=12) and with nonautistic developmental disorders (n=21). Results provide preliminary support for the utility of the STAT as an early screening of autism. (Contains…

Examined in 4 experiments 2-year-olds' knowledge of solidity in search tasks. Found no evidence that 2-year-olds represented solidity and support constraints on trajectories of falling objects; two experiments included 2.5-year-olds who succeeded on search tasks. Explored implications of 2-year-olds' poor performance in light of very young…

Three studies examined lexical categorization in 2-year- olds. Findings indicated that even with minimal opportunities to familiarize themselves with novel artifacts, children generalized their names in accordance with the objects' functions, even when they had to discover the functions on their own or when all the test objects had some…

Compared mastery motivation on 2 tasks for 1- and 2-year-old children--25 with motor impairment, 25 with developmental delays, and 25 with typical development, but all matched for mental age. Found that the groups did not differ on any measure of mastery motivation. (MDM)

Two experiments examined toddlers' ability to use cues to infer meaning of novel action words. Toddlers were taught labels for similar or dissimilar pairs of videotaped actions, with behavioral cues or eye gaze related to agents' intentions distinguishing similar events. Results showed that in year 2, children begin to consider…

Notes that regardless of the language, children acquire language on the same general schedule and the same cognitive path. Explores the process of child language acquisition, from sounds, through word meanings, to syntax and grammar. (HTH)

Discusses the lack of agreement among experts on the best way to deal with infant and toddler sleep problems. Includes discussion of the "family bed" and the science of sleep, acknowledging that each child is different and families must find a solution that works best for them. (HTH)

Suggests that finger plays and action rhymes aid infants and toddlers in language development; introduce number concepts, drama, and music; develop fine motor skills; and increase auditory memory. Includes 11 English and nine Spanish-language activity rhymes. (LBT)