Monthly Archives: May 2009
Pragmatic differentiation in early trilingual development
This study examines pragmatic differentiation in early trilingual development through a longitudinal analysis of language choice in a developing Tagalog–Spanish–English trilingual child. The child’s patterns of language choice with different language users are analyzed at age 1 ; 10 and 2 ; 4 to examine: (1) whether evidence for pragmatic differentiation can be found even before age two and in simultaneous interactions with distinct language users; (2) whether lexical gaps determine the child’s choice of one language over another; and (3) whether her patterns of language choice are affected by the interlocutors language use and their responses to mixing. The results indicate that the child was capable of selecting the appropriate language according to the interlocutors’ language from the earliest sessions. However, switches to inappropriate languages were common due to vocabulary gaps, the interlocutors’ acceptance of mixing and the possibilities determined by the existence of multiple lexical resources and multiple language users.
from the Journal of Child Language
Preschoolers’ word mapping: The interplay between labelling context and specificity of speaker information
We assessed the effect of specificity of speaker information about an object on three-year-olds’ word mappings. When children heard a novel label followed by specific information about an object at exposure, children subsequently mapped the label to that object at test. When children heard only specific information about an object at exposure, they inferred that the label applied to a different object at test. Finally, non-specific information did not assist children in mapping a word to an object. Thus, children use speaker information as a word-mapping cue but this information is interpreted differently depending on how the discourse is initiated.
from the Journal of Child Language
Prosodic patterns in Hebrew child-directed speech
The study examines prosodic characteristics of Hebrew speech directed to children between 0 ; 9–3 ; 0 years, based on longitudinal samples of 228,946 tokens (8,075 types). The distribution of prosodic patterns – the number of syllables and stress patterns – is analyzed across three lexical categories, distinguishing not only between open- and closed-class items, but also between these two categories and a third, innovative, class, referred to as between-class items. Results indicate that Hebrew CDS consists mainly of mono- and bisyllabic words, with differences between lexical categories; and that the most common stress pattern is word-final, with parallel distributions found for all categories. Additional analyses showed that verbs take word-final stress, but nouns are both trochaic and iambic. Finally, a developmental analysis indicates a significant increase in the number of iambic words in CDS. These findings have clear implications regarding the use of prosody for word segmentation and assignment of lexical class in infancy.
from the Journal of Child Language
The contribution of language skills to reading fluency: A comparison of two orthographies for Hebrew
The purpose of the present study was to explore the contribution of phonological and general language skills to reading fluency of pointed and unpointed Hebrew scripts. Reading, language and memory tasks were performed by 48 fifth-grade monolingual native Hebrew speakers. Results showed that the most marked predictor for both pointed and unpointed reading texts was the morphological measure, whereas the phonological awareness measure contributed to neither of them. The semantic and syntactic measures contributed only to unpointed text reading fluency. The discussion highlights how readers in script, such as unpointed Hebrew, rely on general language skills in order to achieve fluent reading.
from the Journal of Child Language
Early Child Language Mediates the Relation Between Home Environment and School Readiness
Home environment quality is a well-known predictor of school readiness (SR), although the underlying processes are little known. This study tested two hypotheses: (a) child language mediates the association between home characteristics (socioeconomic status and exposure to reading) and SR, and (b) genetic factors partly explain the association between language and SR. Data were collected between 6 and 63 months in a large sample of twins. Results showed that home characteristics had direct effects on SR and indirect effects through child language. No genetic correlation was found between language and SR. These results suggest that home characteristics affect SR in part through their effect on early language skills, and show that this process is mainly environmental rather than genetic in nature.
from Child Development
Effective Early Literacy Skill Development for Young Spanish-Speaking English Language Learners: An Experimental Study of Two Methods
Ninety-four Spanish-speaking preschoolers (M age = 54.51 months, SD = 4.72; 43 girls) were randomly assigned to receive the High/Scope Curriculum (control n = 32) or the Literacy Express Preschool Curriculum in English-only (n = 31) or initially in Spanish transitioning to English (n = 31). Children’s emergent literacy skills were assessed before and after the intervention in Spanish and English. Children in the English-only and transitional groups made significant gains in their emergent literacy skills in both Spanish and English compared to the control group, The English-only and transitional models were equally effective for English language outcomes, but for Spanish-language outcomes, only the transitional model was effective. The results suggest that a targeted early literacy intervention can improve Spanish-speaking preschoolers’ preliteracy skills.
from Child Development
Orthography and the Development of Reading Processes: An Eye-Movement Study of Chinese and English
As children become proficient readers, there are substantial changes in the eye movements that subserve reading. Some of these changes reflect universal developmental factors while others may be specific to a particular writing system. This study attempts to disentangle effects of universal and script-dependent factors by comparing the development of eye movements of English and Chinese speakers. Third-grade (English: mean age = 9.1 years, n = 23; Chinese: mean age = 9.4 years, n = 25), fifth-grade (English: mean age = 11.2 years, n = 30; Chinese: mean age = 11.4, n = 25), and undergraduate students (English: n = 26; Chinese: n = 30) read stories in their native language while their eye movements were recorded. Results show a mixture of orthography-dependent factors with others that are remarkably parallel across these two very different writing systems. Orthographic effects are also more pronounced for children than for skilled adult readers. Implications for theories of reading eye movements and reading development are discussed.
from Child Development
Peer Effects on Children’s Language Achievement During Pre-Kindergarten
This study examined associations between peers’ expressive language abilities and children’s development of receptive and expressive language among 1,812 four-year olds enrolled in 453 classrooms in 11 states that provide large-scale public pre-kindergarten (pre-k) programs. Higher peer expressive language abilities were positively associated with children’s development of receptive and expressive language during pre-k. The positive association between peers’ expressive language abilities and children’s receptive language development was stronger for children who began pre-k with higher receptive language skills and within classrooms characterized by better classroom management. Implications of these findings for understanding ecological inputs to children’s language development and for designing effective pre-k programs are discussed.
from Child Development
Relations Between Parenting Quality and Cognitive Performance of Children Experiencing Varying Amounts of Childcare
Associations between parenting quality and 3-year-olds’ school readiness, receptive, and expressive language were examined in relation to the amount of time they spent in childcare, based on data from the NICHD Study of Early Child Care and Youth Development (N = 1,364). Associations for school readiness and receptive language were stronger among children who experienced medium amounts of childcare than among children who experienced high amounts of childcare, and they were not weaker than among children who experienced primarily maternal care. Contrary to expectations, the association between parenting quality and school readiness among children who experienced medium amounts of childcare was significantly stronger than among children who experienced predominantly maternal care.
from Child Development
Statistical Learning in a Natural Language by 8-Month-Old Infants
Numerous studies over the past decade support the claim that infants are equipped with powerful statistical language learning mechanisms. The primary evidence for statistical language learning in word segmentation comes from studies using artificial languages, continuous streams of synthesized syllables that are highly simplified relative to real speech. To what extent can these conclusions be scaled up to natural language learning? In the current experiments, English-learning 8-month-old infants’ ability to track transitional probabilities in fluent infant-directed Italian speech was tested (N = 72). The results suggest that infants are sensitive to transitional probability cues in unfamiliar natural language stimuli, and support the claim that statistical learning is sufficiently robust to support aspects of real-world language acquisition.
from Child Development
The Value of Vocalizing: Five-Month-Old Infants Associate Their Own Noncry Vocalizations With Responses From Caregivers
The early noncry vocalizations of infants are salient social signals. Caregivers spontaneously respond to 30%–50% of these sounds, and their responsiveness to infants’ prelinguistic noncry vocalizations facilitates the development of phonology and speech. Have infants learned that their vocalizations influence the behavior of social partners? If they have, infants should show an extinction burst in vocalizing when adults temporarily stop responding to infant vocalizations. Thirty-eight 5-month-olds were tested in the still-face paradigm with an unfamiliar adult. When the adult assumed a still face, infants showed an extinction burst. Thus, 5-month-olds have learned the social efficacy of their vocalizations on caregivers’ behavior. Furthermore, the magnitude of 5-month infants’ extinction bursts predicted their language comprehension at 13 months.
from Child Development
Demographics affecting parental expectations from early deaf intervention
Parent participation in rehabilitation programs for children with special needs requires program designers to accommodate each family’s particular needs and characteristics.
This study investigated maternal reports on various characteristics of 50 Israeli deaf preschoolers, their parents, and families, and examined these characteristics’ links with mothers’ expectations from early intervention. Characteristics linked with maternal expectations from intervention included: mother’s pessimism, need for independence, ability to control her life, and receipt of practical assistance and formal and informal support; family’s degree of communication and interaction; children’s communication mode and age at onset of treatment; and additional deaf siblings in the family. A four-cluster model depicts the relations between mothers’, families’, and deaf children’s attributes and the mothers’ expectations, entailing recommendations for intervention planning. Copyright © 2009 John Wiley & Sons, Ltd.
Hearing Impairment in 2008: A compilation of available epidemiological studies
A data bank of prevalence of hearing impairment for monitoring and implementation of programmes at national or global level and for the estimate of the global burden has been established. A systematic search was conducted of random-sample population-based studies of bilateral hearing impairment with clearly defined hearing threshold levels. Fifty-three studies from 31 countries from all WHO regions were found to meet the selection criteria. The prevalence of mild and disabling hearing impairment and other details from the studies are reported by WHO region. Although a large number of studies were found, only a small number among them were suitable surveys of prevalence of bilateral hearing impairment in the general population. Hearing impairment is a major disability that should be monitored at all ages: more population-based surveys are needed in all regions of the world. Utilization of the WHO protocol is recommended for collection and analysis of data in standard ways; especially recommended is the use of WHO threshold levels and to report the prevalence of bilateral impairment, both of which required to calculate burden.
from the International Journal of Audiology
“All Children Can and Should Have the Opportunity to Learn”: General Education Teachers’ Perspectives on Including Children with Autism Spectrum Disorder who Require AAC
A qualitative online focus group methodology was used to investigate the experiences of five elementary school teachers (grades K-5) who had included in their general education classrooms children with autism spectrum disorders (ASD) who required augmentative and alternative communication (AAC). Information was obtained from the participants in the following areas: (a) the benefits of educational inclusion, (b) the negative impacts of educational inclusion, (c) the challenges of educational inclusion, (d) the supports for educational inclusion, and (e) recommendations for other teachers and individuals involved in the inclusion process. Participants primarily chose to focus on inclusion as a beneficial practice for all involved, but did describe a few barriers and challenges of inclusion. The results are discussed as they relate to these themes and with reference to published literature. Recommendations for future directions are also presented.
Comparison of Fixed and Gradual Array When Teaching Sound-Letter Correspondence to Two Children with Autism who Use AAC
The purpose of this study was to compare two conditions for teaching two children with autism (ages 4;10 and 5;4) who used Augmentative and Alternative Communication (AAC) to point to the printed letter that corresponded to the spoken letter sounds of /t/ and /m/. In one condition (gradual array), the printed letter was first presented in isolation and then distracter letters were gradually introduced. In the other condition (fixed array), the printed letter was immediately presented in combination with seven distracter letters. Using an alternating treatment design, results revealed that the fixed array condition resulted in a faster rate of acquisition of target skills for both participants. Implications and directions for future research are discussed.
